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. 2026 Jan 2;21(1):e0339994. doi: 10.1371/journal.pone.0339994

The influence of garden spatial configuration on tourist behavior: A systematic review based on Space Syntax

Bin Li 1,#, Mohammad Mujaheed Hassan 1,*, Yan Han 2,#, Jasmine Leby Lau 1
Editor: Yile Chen3
PMCID: PMC12758741  PMID: 41481762

Abstract

As composite spaces that integrate nature and culture, gardens are no longer regarded as merely static objects of visual appreciation in the context of urbanization, but have become essential venues for public cultural tourism and leisure. Consequently, the behavioral characteristics of tourists in gardens have attracted increasing academic attention. Space syntax, as a tool for analyzing the influence of spatial organization on human behavior, quantifies spatial configuration characteristics and can reveal how garden spatial configuration affects tourists’ movement paths and spatial preferences, thereby enabling a systematic examination of the impact of space syntax–based garden spatial configuration on tourist behavior. adheres to the Following by PRISMA 2020 guidelines, this study conducted a literature search for the period 2015−2015 in four databases, namely Web of Science, Scopus, JSTOR, and ScienceDirect Based on explicit inclusion and exclusion criteria, 16 high-quality empirical studies were ultimately selected. Results indicate that indicators such as integration, connectivity, and depth, demonstrate significant explanatory in predicting tourist path selection, stay locations, and spatial preferences. Furthermore, the influence of spatial structure on visitor behavior is not a singular direct effect. Visitor perceptions, particularly aesthetic preferences, cultural cognition, and sense of security, play a crucial mediating role between spatial structure and behavior. Based on these findings, this study proposes the “Structure–Perception–Behavior (SPB)’‘ framework. Its cross-scale methodological insights provide a theoretical foundation and practical pathway for subsequent landscape space optimization design and visitor behavior guidance.

1. Introduction

As an art form, Gardens integrate artistic elements such as plants, water features, topography, architecture, and ornamental structures to create significant spatial environments that combine cultural aesthetics with practical functionality [1]. Regarded as a “second nature,” they fulfill both physiological and psychological human needs [2]. Across different civilizational lineages, the evolutionary trajectories and spatial connotations of garden types differ markedly. For instance, Eastern gardens, influenced by Confucian, Taoist, and Buddhist philosophies, emphasize the creation of spaces that embody the “unity of heaven and humanity,” personal cultivation, and transcendent mental states [3]. Within this framework, Chinese imperial gardens, shaped by ritual systems and imperial discourse, emphasize grand layouts and central axis order, symbolizing political power [4]. Private gardens, however, favored the “microcosmic” landscape aesthetic, emphasizing the literati’s appreciation of shifting vistas and self-cultivation through “scenes that change with every step [5].”Japanese gardens, inheriting early Chinese Buddhist traditions, ultimately evolved under the influence of Zen and the tea ceremony to use stones, sand, and moss as primary elements, creating wabi-sabi aesthetics and meditative spaces [6]. In contrast to the Eastern pursuit of natural beauty, Western gardens emphasize the unity of religion and power through converging axes and waterways [7]. Examples include Renaissance gardens that express “rational domination over nature” through geometric order [8], and Baroque gardens that reinforce monarchical authority through spatial hierarchy [9]. Within contemporary urban contexts, gardens, whether rooted in Eastern traditions or Western lineages, have become spatial vessels for recreation, sightseeing, and social interaction for both residents and visitors.

People regard urban space as a green environment created in accordance with the laws of nature [10], the evolution of human demand for green spaces, from singular to diverse and from simple to complex, has promoted the development of urban gardens [7]. Consequently, visitor behavior within garden spaces has increasingly drawn interdisciplinary attention from fields such as urban planning, landscape architecture, tourism geography, and environmental psychology [11], the research focus on garden spaces has gradually shifted from cultural aesthetics to the influence of spatial design on visitor behavior [12]. Spatial syntax, proposed jointly by Bill Hillier and Julienne Hanson [13], primarily analyzes the relationship between urban spatial structures and human behavior. By integrating core metrics such as such as integration, connectivity, and depth, it reveals how spatial layouts influence the range of human activity [14]. For instance, it can uncover individual or group clustering patterns, path preferences, and spatial perceptions [15]. In recent years, researchers have increasingly applied spatial syntax methods to analyze complex garden spaces, this approach illuminates how intricate garden layouts shape clusters of visitor behavior, movement paths, and dwell-time hotspots, thereby filling methodological gaps in traditional qualitative studies [16].

Existing research consistently indicates that the spatial configuration of gardens directly influences visitors’ behavioral choices and satisfaction levels. For instance, when garden structures, water features, and rockeries are obscured by towering vegetation, it impedes visitors’ visual access, thereby diminishing their spatial perception [17]. Conversely, overly dense clusters of winding path junctions can induce spatial cognitive difficulties. Low integration and connectivity can lead to disorientation and path uncertainty, thereby visitors’ desire for spatial exploration and behavioral motivation [18]. Finally design that emphasize path meandering, while satisfying aesthetic intentions, can also pose challenges to directional recognition and cause spatial distress [19]. Lee et al. [20] found that installing recreational facilities along spatial edge without visual signage, still makes it challenging to attract visitors to use them. Furthermore, the presence of stairs and narrow passages in highly connected areas limits accessibility for older people and children, creating a sense of behavioral separation between these groups and others [21].

In summary, the spatial configuration of gardens exerts a significant influence on tourist behavior [22]. The necessity of this systematic review lies in the current lack of a comprehensive analysis employing Space Syntax to examine the relationship between garden spatial structures and visitor behavior. Although prior studies have confirmed the correlation between spatial configuration and tourist behavior, a lack of systematic reviews persists—particularly those integrating the explanatory power and adaptability of different spatial variables. Therefore, this study conducts a systematic review of selected literature employing Space Syntax-based approaches to examine the relationship between garden spaces and tourist behavior, and develops the analysis around the following key questions (Fig 1):

Fig 1. Flow diagram for literature review.

Fig 1

  • RQ1: From 2015 to 2025, what distribution and evolutionary patterns are exhibited in the research characteristics and publication features of space-syntax-based studies on “garden spatial configuration and tourist behavior’‘?

  • RQ2a: Which core metrics of space syntax were employed in the included studies? What are the definitions and computational formulas of these metrics?

  • RQ2b: How do different metric characteristics and spatial representations in space syntax (VGA, Segment, Isovist, Convex) influence tourist behavioral outcomes?

  • RQ2c: Which features have existing studies used to reveal the mediating role of tourist perception in the relationship between spatial configuration and behavioral outcomes?

2. Methods

This study follows the guidelines of the systematic review PRISMA (2020) [23], a title that has been registered on the international platform for registered systematic Evaluation of Meta-Analysis Programs under the registration number: INPLASY202560013.

2.1 Search strategy

In this study, electronic databases such as Web Of Science, Scopus, JSTOR, and ScienceDirect were systematically searched with a search deadline of January 2, 2025. The search process was matched with keywords by Boolean operators AND and OR (Table 1), and coordinated search terms and search strings were used uniformly for each database to ensure that all databases were searched consistently (S1 Table).

Table 1. Search string.

Search Builder Search String
Space Syntax “Space” AND “syntax” OR “spatial” AND “syntax”
Garden “garden” OR “park” OR “grove”

2.2 Criteria and quality assessment

This study employed the PICOS framework for literature screening [24], the inclusion criteria simultaneously satisfied the following conditions (Table 2). Although the search covered major databases, the number of studies ultimately included was relatively small; therefore, this study does not rely solely on statistical frequencies but adopts an interpretive synthesis, emphasizing the correspondence between “metrics–representations–behavior’‘ and the elucidation of the “structure–perception–behavior’‘ mechanism. The quality of the included literature was assessed using the Crowe Critical Appraisal Tool (CCAT) to enhance the precision of the research [25]. Developed by Lynne Crowe, the tool is applicable to quantitative, qualitative, and mixed-methods studies and provides a standardized evaluation framework [26].The assessment comprises the following dimensions: introduction, background, methods, abstract, data collection, ethics, results, and discussion. Each dimension is scored from 1 to 5, with no half points [27](S2 Table).

Table 2. PICOS criteria for inclusion of studies.

Items Detailed inclusion criteria
Population Tourist engagement in garden, park, and other landscape environments
Intervention Spatial structural characteristics of gardens
Comparison Without a control group
Outcome Involving tourist behavioral performance
Study design Empirical studies using space syntax analysis

2.3 Study selection

In accordance with PRISMA 2020, 1,040 records were retrieved from four databases; after removing 119 duplicates, 921 proceeded to title/abstract screening: 172 were excluded for timeframe mismatch, 65 were books, and 488 were unrelated to the topic. A total of 200 full texts were obtained and assessed: based on PICOS, 59 reviews/non-empirical studies, 11 without space syntax, 9 without tourists/visitors, 91 outside garden/park/woodland contexts, and 8 abstract-only/no full text were excluded, 5 theses, 1 pilot preprint. Ultimately, 16 studies were included (Fig 2). In cases of disagreement during the screening process, a third expert was consulted to assist in reaching a final consensus.

Fig 2. PRISMA flow diagram.

Fig 2

3. Results

A total of 1,040 studies were screened for this review, with the specific reasons for exclusion detailed in the PRISMA flow diagram (Fig 2). Ultimately, 16 studies met the inclusion criteria and were evaluated using the Crowe Critical Appraisal Tool (CCAT). The distribution of quality scores is presented in Table 3. The results of the quality appraisal indicate that all included studies demonstrated a high level of overall quality.

Table 3. Quality of studies assessed using the crowe critical appraisal tool (CCAT).

Study P I De S Dc EM R Di T
Zhai et al. (2018) [22] 5 5 4 4 5 4 4 5 36
Huang and Lee (2023) [28] 5 4 5 4 5 3 5 4 35
Zhang et al. (2020) [29] 5 5 5 4 5 3 5 5 37
Wu et al. (2025) [30] 5 5 5 4 5 4 5 5 38
Chen and Yang (2023) [31] 4 5 5 5 4 3 4 5 35
Yu et al. (2016) [32] 4 4 5 3 5 3 4 4 32
Gomaa et al. (2024) [33] 5 5 5 4 5 4 5 5 38
Lee (2021) [34] 4 4 5 3 5 3 4 4 32
Saadativaghar & Zarghami (2023) [35] 5 5 5 4 5 4 5 5 38
Chen & Yang (2023) [36] 4 4 5 4 5 3 4 4 33
Mohammadi & Ujang (2022) [37] 4 4 4 3 5 3 4 4 31
Yu et al. (2021) [38] 5 4 5 4 5 3 5 4 35
Mohamed et al. (2023) [39] 5 5 5 4 5 4 5 5 38
Zhang et al. (2019) [40] 4 4 4 3 4 3 4 4 30
Traunmüller et al. (2023) [41] 5 5 5 4 5 4 5 5 38
Chen et al. (2025) [42] 5 5 5 4 5 4 5 5 38

NOTE: P, Preliminaries; I, Introduction; De, Design; S, Sampling; Dc, Data Collection; EM, Ethical Matters; R, Results; Di, Discussion; T, Total.

3.1 Research characteristics

This study provides a systematic synthesis of the 16 included studies (Table 4). The general characteristics were summarized across the following dimensions: country of publication, study location, spatial analysis, and space syntax modeling methods, core space syntax metrics (integration, connectivity, choice, control), radius or weighting settings, and reported outcomes. Specifically, spatial analysis and space syntax modeling methods comprised two categories: (1) visualization- or statistics-based analyses, including kernel density estimation (KDE), heatmaps, and experiential maps; and (2) space syntax modeling methods, including axial maps, visibility graph analysis (VGA), segment analysis, and isovist-based models. Notably, axial, segment, and VGA analyses emphasize the global network structure or connectivity, whereas the isovist analysis focuses on local field-of-view visibility.

Table 4. Characteristics of the studies.

Authors
(Year)
Study sites Spatial Analysis and Modeling Methods Spatial Syntax Metrics Radius/Weight Settings Outcome
Zhai et al. (2018)
China [22]
Urban forest park Modified convex map (stroke-based) Integration,
Control,
Connectivity
Global (Rn), metric weighting Accessibility and tourist path behavior
Huang & Lee (2023) [28]
Korea
Hefei urban park Kernel density estimation (KDE) + heatmap Integration Global and local Accessibility and space use
Zhang et al. (2020) [29]
China
Lion Grove Garden VGA Visibility Graph, Integration Behavioral patterns (route choice)
Wu et al. (2025) [30]
China
The Three Gardens of Yangzhou VGA + Segment Integration, Connectivity, Choice Local (R3/R5) + Global (Rn), angular weighting Differences in spatial configuration and tourist perception
Chen & Yang (2023) [31]
China
Humble Administrator’s Garden VGA Visibility Graph, Isovist Tourist perception and experience
Yu et al. (2016) [32]
China
Suzhou· Yuyuan Garden Segment+ VGA Global Integration,
connectivity,
Control
Accessibility and staying behavior
Gomaa et al. (2024) [33]
Pakistani
Peshawar Park Axial Integration,
Step depth, Choice, Connectivity
Global + step depth from the main entrance Accessibility and perception
Lee (2021) [34]
Korea
Cheonan urban park Segment Integration, Visual connectivity Global and local Accessibility and space use
Saadativaghar & Zarghami (2023) [35]
Iran
Eram Park, Hamadan, Iran Axial Connectivity, Integration, Depth, Control,
Line length, Intelligibility
Local and global Psychological restoration
Chen & Yang (2023) [36]
China
Humble Administrator’s Garden Isovist Integration, Depth,
Visual area
Path-based, mean depth Tourist experience and route choice
Mohammadi & Ujang(2021) [37]
Malaysia
Kuala Lumpur urban park Experiential maps Local Integratio, Visual accessibility Social interaction and accessibility
Yu et al. (2021) [38]
China
Ningbo Tianyi Pavilion Museum Garden convex Integration, Choice, Width, Length, Enclosure ratio, Seating Distribution of staying and spatial attributes
Mohamed et al. (2023) [39]
Egypt
New Damietta urban park, Egypt Visibility Graph Integration, Connectivity, Choice Global and local Accessibility and tourist experience
Zhang et al. (2019) [40]
China
Lion Grove Garden VGA Visual control, Revisiting proportion, Speed Local and global Sightline design and tourist distribution
Traunmüller et al. (2023) [41]
Turkey
42 community parks in Izmir Segment + Axial Integration, Choice, Connectivity Multiple radii (R100–R2000, Rn), angular weighting Park use intensity and accessibility differences
Chen et al. (2025) [42]
China
Xiao Canglang Water Courtyard Isovist Isovist Area Based on eight viewpoints and different visiting routes Tourist visual experience and spatiotemporal perception

NOTE: VGA (Visibility Graph Analysis): visibility graph maps used to represent visual fields in space. Segment: line segment model, which can be weighted by angle, length, or metric distance. Axial: axial map representing the longest and fewest sight lines. Isovist: the visible space from a given point under conditions of spatial occlusion. Experiential maps: records of participants’ subjective experiences and behaviors within the site. Rn: global radius. Rk: local radius based on topological step depth (R3 or R5).

3.2 Literature sources and publication trends

This study included 16 representative publications spanning 2015–2025. The research regions encompassed China, Poland, Pakistan, and South Korea (Fig 3). Notably, over the past decade, Chinese and South Korean scholars have produced the highest volume of publications exploring garden spaces and visitor behavior. It is worth noting that although Malaysia, Egypt, Turkey, Iran and Pakistan have produced fewer publications, these studies also offer valuable complementary perspectives for researchers in other fields.

Fig 3. Geographical distribution by Country.

Fig 3

Fig 4 clearly shows the annual publication trend in this field. Results indicate that over the past five years (2015–2021), publication volume remained low, with instances of zero publications occurring, reflecting that this field has not garnered significant attention or favor among scholars. Since 2021, publication volume has surged dramatically, peaking in 2023 (N = 6), indicating the expanding application of spatial syntax methods within landscape architecture.

Fig 4. Publication trends from 2015 to 2025.

Fig 4

Research on the relationship between landscape spaces and visitor behavior has been primarily published in the following journals (Table 5). The top three journals are Urban Forestry and Urban Greening, Landscape Research, Asian Journal of Architecture and Construction Engineering, and Sustainability, each having published two papers on this topic over the past decade. The remaining journals published only one article related to this theme. During the literature search, this study found that publications appeared not only across core journals in fields such as architectural planning and design and landscape architecture, but also across interdisciplinary journals. This reflects the growing demand for cross-disciplinary integration within the academic community.

Table 5. Journals and year of publication distribution.

Journal 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Totals
Urban Forestry & Urban Greening 1 1 2
Frontiers of Architectural Research 1 1
Journal of the Korea Institute of Spatial Design 1 1
Landscape Research 1 1 2
Journal of Asian Architecture and Building Engineering 1 1 2
Journal of Asian Architecture and Building Engineering 1 1
Sustainability 1 1 2
Visualization in Engineering 1 1
Civil Engineering and Architecture 1 1
Archnet-IJAR: International Journal of Architectural Research 1 1
Urban Science 1 1
Journal of the Korea Institute of Spatial Design 1 1
Total 0 1 0 1 1 1 3 0 5 2 2 16

The findings from Sections 3.1 and 3.2 addresses RQ1: “What are the main trends in research based on Space Syntax exploring the relationship between garden spatial configuration and tourist behavior from 2015 to 2025? “ The results indicate that all included studies were high-quality articles. The research characteristics of each paper were summarized, and overall publication volume trends were examined. Publication volume exhibits an overall upward trend, while journal publications demonstrate the advantages of interdisciplinary convergence and development.

3.3 Characteristics of space syntax indicators

Space Syntax is a theoretical and methodological framework for analyzing the relationship between spatial structures and human behavior [43]. Spatial configuration metrics derived from Space Syntax modeling, such as those based on axial maps and segment maps, primarily include integration, connectivity, depth, control, mean depth, and relative asymmetry [44], these metrics focus on spatial accessibility and connectivity. Visual features mainly include visual connectivity, visual integration, visual selectivity, visible area, and visible boundary length [45], these are based on the VGA (Visual Area Gauge) in spatial syntactic modeling methods, and these metrics focus on visual accessibility and visual perception. Therefore, both theoretically possess topological properties, but there are certain differences in their spatial syntactic modeling methods. The 16 articles included in this study cover topics such as depth value, integration, control value, selectivity, connectivity, visible area, visual integration, and composite indicators. To further understand the core indicators of Space Syntax, this study integrates spatial attributes and their metric characteristics to provide a detailed elaboration on spatial structure and accessibility, local control and path flow, local connectivity, spatial intelligibility, isovist area and visual integration, as well as extended metrics.

3.3.1 Core space syntax metrics.

Within the framework of Space Syntax theory, depth is used to analyze the topological, metric, and angular relationships between spatial units, and it is generally categorized into three types: Step Depth, Metric Depth, and Angular Depth. Step Depth is calculated based on the number of steps along a path and reflects the hierarchical relationships within the overall structure of spatial units; Metric Depth is computed using the geometric length of space and emphasizes the actual physical distance and walking cost in space; Angular Depth is calculated mainly based on changes in turning angles along the path and emphasizes people’s perception of the number of turns and the magnitude of turning angles [46]. This study uses Step Depth analysis to investigate historical gardens in which surveying accuracy is limited but spatial progression is emphasized.

In Space Syntax, the core indicators include depth, integration, connectivity, choice, control, and intelligibility (Table 6). Hillier and Iida [46] pointed out that Depth refers to the minimum number of steps required to move from one space to another. The smaller the Depth is, the more favorable the spatial location of that space. For integration, Gomaa et al. [33] further distinguish between “global integration’‘ and “local integration’‘; local integration measures the accessibility of a spatial unit within a specified range, that is, the node’s accessibility within the local network, whereas global integration measures the accessibility of a spatial unit within the entire network. Connectivity is used to measure the number of adjacent spaces. The higher the Connectivity, the closer the relationships with adjacent spaces, indicating better spatial flow and more convenient traffic [30]. Control is calculated based on Connectivity and is used to evaluate the degree to which a spatial unit dominates its adjacent spaces. The higher the Control, the more pedestrian flows pass through the path entrances, increasing the likelihood of local pedestrian flows [39]. Choice is mainly used to measure the core position of spatial nodes; the smaller the Choice, the stronger the spatial centrality [46].

Table 6. Characteristics of core Space Syntax metrics.
Space syntax
measures
Formula Feature description Source
Depth  MDi=j=1nDij(n1)                   MDi represents the mean Depth of unit i, Dij represents the topological distance from unit i to unit j, n is the total number of units in the space, and n − 1 is the number of units excluding unit i. Freire de Almeida et al.(2021) [47]
Integration  I=(n1)j=1n1dij/(n1)     n represents the total number of nodes in the spatial unit, and dij  represents the number of steps in the shortest path from spatial unit i to spatial unit j. Lyu et al.(2025) [48]
Control       CV(i)=jN(i)1deg(j)              CV(i) represents the Control value of spatial unit i, N(i) is the set of all units adjacent to i, and deg(j) represents the connectivity of the adjacent unit j. Lyu et al.(2025) [48]
Choice  Choice(i)=sitσst(i)σst     σst represents the total number of shortest paths from node s to node t, σst(i) represents the number of those shortest paths that pass through node i. Freire de Almeida et al.(2021) [47]
Connectivity  Ci=j=1naij   n denotes the total number of nodes in the spatial network; if spatial units i and j are directly connected, aij=1; and aij=0  otherwise. Freire de Almeida et al.(2021) [47]
Intelligibility Intelligibility=R2=[Corr(Ci,Ii)]2 The higher the Intelligibility value is, the clearer the spatial structure; the lower the value is, the more likely it is to cause a sense of disorientation. Lyu et al.(2025) [48]

Mohammadi and Ujang [37] point out that intelligibility measures the degree of association between local space and the overall space, which reflects an individual’s level of understanding of the overall spatial structure when within a bounded space. It reflects the extent to which local space facilitates individuals’ understanding of the whole, revealing how movement and perception within space influence cognition of the spatial environment. The R value represents the association between connectivity and integration(Table 7).

Table 7. Range of intelligibility values.
Level of intelligibility R2 Range Characteristic description Impact
High intelligibility R2≥ 0.70 (0.70–1.00) Local spatial characteristics accurately reflect the spatial structure. High spatial accessibility
Moderate intelligibility 0.4 ≤ R2< 0.70 Local spatial characteristics are correlated with the overall structure but cannot fully reflect the spatial structure. Spatial accessibility requires external assistance.
Low intelligibility R2 < 0.4 (0–0.40) Local space is uncorrelated with the overall structure. Low spatial accessibility.

3.3.2 Isovist area, visual integration and extended metrics.

Isovist Area refers to the spatial extent that can be included within an individual’s field of view when standing at a given position. The more the surrounding space is covered, the larger the Isovist Area and the stronger the openness and permeability of that space [49].Yu et al. [32] further found that higher isovist values correspond to greater spatial transparency, and spaces with higher visual integration tend to exhibit higher visual accessibility and spatial guidance. Visual integration is a space syntax metric derived from Visibility Graph Analysis (VGA) that measures a spatial unit’s accessibility and centrality within the visual network. Higher visual integration indicates greater spatial guidance and attractiveness. In garden environments, spaces with high visual integration are generally located in areas with strong intersect visibility, meaning that the view is less obstructed and the field of vision is open, which is more conducive to promoting social interaction and the flow of people.

Extended metrics refer to composite measures derived from space syntax core metrics (integration, connectivity, depth) in combination with other data or analytical tools. Among the 16 included studies, common research methods included combining GPS with Baidu heatmaps. Specifically, combining Baidu heatmaps can be used to reveal the impact of spatial structure on tourist clustering distribution. For example, Huang and Lee [28] explored the combination of Baidu heatmaps and spatial syntax, finding a significant correlation between integration degree and tourist clustering heat.

Zhang et al. [29] combined spatial syntax with GPS trajectory data to generate specific indicators such as visit rate, average dwell time, average walking speed, and revisit rate using GPS data, they then used Spearman correlation analysis to examine the relationship between GPS indicators and spatial syntax indicators. The results showed that walkable accessibility determines the likelihood of a visitor’s first visit, while visual features have a greater influence on a visitor’s willingness to revisit. By integrating space syntax metrics with behavioral or perceptual data, extended metrics can systematically reveal associations between spatial characteristics and outcomes such as visitor clustering, satisfaction, and revisit intention [30]. They overcome the limitations of single metrics and, through multi-dimensional data integration, enhance the explanatory and predictive power for the relationship between garden spatial structure and tourist behavior.

3.4 The influence of garden spatial configuration on tourist behavior

The spatial configuration of gardens significantly influences tourists’ path preferences and movement patterns, and exerts clear effects on their staying preferences, dwelling choices, and perceptual experiences [50]. Although space syntax metrics have rigorous mathematical definitions and computational formulas, their values lack universal, fixed thresholds and are typically require interpretation after normalization. Therefore, (Table 8) summarizes reference numerical values for a series of core metrics, including Integration, Choice, and Connectivity, to enhance understanding.

Table 8. The influence of space syntax metrics on tourist behavior.

Space Syntax Metrics Range Evaluation criteria (relative values) Behavioral effects Author (Year)
Integration Commonly 0–1 or 0–2 after normalization. Higher than the system mean = high integration; lower = low integration. High values: central, highly accessible, potentially attractive movement corridors; low values: peripheral, poorly accessible. Zhai et al. (2018) [22];
Lee (2021) [34];
Huang & Lee (2023) [28];
Zhang et al. (2020) [29];
Yu et al. (2021) [38];
Wu et al. (2025) [30];
Traunmüller and Zarghami (2023) [41]
Choice Normalized: 0–1; non-normalized varies with network size. Top 10–20% by quantile considered high-choice main corridors. High values: must-pass/backbone corridors; low values: branch routes. Mohamed et al. (2023) [39];
Zhai et al. (2018) [22];
Gomaa et al. (2024) [33];
Wu et al. (2025) [30]
Connectivity Number of directly adjacent nodes, typically 1–10+ Higher than the system mean = strong connectivity. High values: intersections/hubs; low values: dead ends Wu et al. (2025) [30]; Gomaa et al. (2024) [33];
Lee (2021) [34]
Control Influenced by the sum of the reciprocals of adjacent nodes’ degrees. Higher than the system mean = strong control High values: intersections/squares; low values: edges/dead ends Yu et al. (2016) [32];
Wu et al. (2025) [32]; Mohamed et al. (2023) [30]
Step depth (from main entrance)/ MD Average step distance to the main entrance or other nodes Less than the system mean depth = central; greater = peripheral High depth: poor accessibility, avoidance; low depth: high permeability Gomaa et al. (2024) [33];
Huang & Lee (2023) [28];
Traunmüller and Zarghami (2023) [41]
Isovist Area Related to field-of-view openness; measured in area units Higher than the system mean = transparent/open High values: exploration and clustering, spectatorship; low values: constrained/hidden. Chen et al.(2025) [42]; Chen & Yang (2023) [31]
Visual Integration 0–1 normalization Higher than the system mean = strong visual guidance Visual hotspots, dwell points, wayfinding Yu et al. (2016) [32];
Yu et al. (2021) [38];
Zhang et al. (2019) [40];
Wu et al. (2025) [30]
Extended Metrics No universal range; used in combination with external data. Compared with GPS/heatmaps/questionnaires Enhance the explanation of satisfaction, revisit intention, restoration, and social interaction. Zhang et al. (2020) [29]; Huang & Lee (2023) [28]; Saadativaghar & Zarghami (2023) [35]; Mohammadi & Ujang (2021) [37]

NOTE: Both measures can be derived from visibility graph analysis (VGA), but they differ conceptually and computationally. Connectivity measures intervisible points, while Isovist Area measures continuous visible space.

Differences in garden spatial structure cause tourists to exhibit different behaviors, mainly affecting tourist aggregation, stay hotspots, social tendencies, and path choices. Among these, path choice has the most significant impact on tourist behavior, especially in areas with high Integration, Zhai et al. [22] found that, in urban parks, paths with higher integration are chosen by tourists with significantly higher frequency. Similarly, Lee [34] supports this view in his study, noting that the level of integration is positively correlated with the frequency of tourist path choices. Tourists tend to favor areas with high spatial accessibility, indicating that highly integrated regions are more likely to attract tourist clusters. With respect to initial visit frequency, Zhang et al. [29] further found, based on GPS trajectory data, that tourists stay in hotspots closely coinciding with the distribution of visual integration; Pedestrian accessibility influences the frequency with which tourists first enter a given area, thereby shaping their length of stay and spatial preferences. Similarly, regarding the main entrance to the garden, Gomaa et al. [33] further found that the step depth of the primary entrance can effectively reflects differences in tourists’ accessibility within the garden. For example, gardens with multiple main entrances can increase the frequency of tourist visits, thereby enhancing overall accessibility. Moreover, open spatial nodes within the garden tend to exhibit stronger visual connectivity. Interestingly, Yu et al. [32] hold a similar view and point out that nodes with higher visual integration concentrate the majority of tourist stay behaviors, indirectly indicating that within these spaces tourists are more inclined to engage in clustered social interaction, photography, and experiential activities. Additionally, Wu et al. [30] found that spatial nodes with higher connectivity tend to exhibit higher densities of tourist aggregation and thus function as “focal spaces”, where tourists are more inclined to stay and appreciate plants, water features, rockeries, and sculptures; moreover, these spaces are characterized by more frequent social interaction and rest activities. Meanwhile, Mohamed et al. [39] emphasized that garden spaces with lower depth are generally situated at the margins of the layout and have reduced accessibility, which suppresses tourists’ exploratory behavior, diminishes their willingness to enter these paths, and consequently leads to a gradual decline in visit frequency.

At the level of garden spatial perception, Yu et al. [32] further found that garden spaces with an configurations and relatively short viewing distances are more likely to stimulate tourists’ willingness to explore freely. For example, lingering on waterfront platforms and in pavilions or corridors often leads to higher levels of social behavior and cultural interaction, helping tourists construct a more complete spatial interaction pattern. On the other hand, some empirical results indicate that the use of composite indicators can enhance the explanatory power of spatial analysis. Chen and Yang [31] indicate in their study that winding, undulating narrative paths can shape tourists’, “perceptual rhythm” and “emotional engagement,” thereby stimulating their exploratory desire and curiosity and enabling them, as they move along these narrative routes, to experience a richly layered spatial experience. Huang and Lee [28] further combined space syntax with Baidu heat maps and found that the degree of integration significantly influences tourists’ spatial satisfaction and their intention to revisit. Tourists’ subjective spatial preferences were also shaped by integration levels. They were more likely to linger and wait for companions in areas with higher integration.

3.5 Tourist perception as a mediating effect

Among the 16 reviewed studies, tourist behavior is not entirely determined by the spatial structure of the garden itself. Tourists’ subjective perceptions are an indirect factor influencing behavioral outcomes such as dwell time, movement speed, and social interaction, and are analyzed via perceptual variables including aesthetic preferences, cultural cognition, safety, and restoration [51] (Table 9). Zhang et al. [29] pointed out that the spectatorship of garden nodes engenders a “view-at-every-step” aesthetic perception; the revisitation rate increases significantly and average walking speed decreases, and when directional perception is clearer, route choice becomes more stable. Yu et al. [38] further support this view: visual perceptions such as coherence, openness, and legibility can significantly predict dwell density, evoke emotional experiences including immersion, mystery, safety, and imageability, and promote prolonged dwelling and contextual immersion. Chen and Yang [31] explore the mediating role of cultural symbols, arguing that narrative elements such as plaque inscriptions, couplets, and poetic paintings serve as carriers that more easily evoke tourists’ understanding and experience of the “garden within a garden,” storyline, thereby strengthening visual orientation and deepening overall spatial memory. Tourists’ restorative perception are directly reflected in their behavior during their stay, suggesting that cultural symbols in garden spaces can enhance tourists’ perceptual capacity. More notably, Mohammadi and Ujang [37] found that cultural landmarks and activity nodes help enhance tourists’ sense of social safety, thereby promoting social interaction and stay behavior. Given the reciprocal relationship between cultural symbols and tourist perceptions, understanding the interaction between cultural connotations and spatial ambience remains an important direction for future research. For example, it is worth exploring how variations in spatial ambience influence tourists’ physical and mental health and attention restoration. On the other hand, tourist perception can facilitate psychological restoration, and individuals exhibit varying levels of restorative response to different natural environments. Saadativaghar and Zarghami [35] show that changes in emotional dimensions are significantly associated with spatial configuration and recommend that garden layouts should alleviate crowded spaces and optimize disorganized spatial arrangements to enhance tourists’ perceived mental health. In summary, tourists’ aesthetic, aesthetic, cultural, safety, and restorative perceptions mediate the relationship between garden spatial configuration and behavioral outcomes. These perceptual factors influence processes such as wayfinding, path choice, length of stay, and social interaction, thereby indirectly shaping tourist behavior patterns and laying the groundwork for constructing a subsequent “Structure–Perception–Behavior’‘ framework.

Table 9. The impact of tourist perception on behavioral outcomes.

Perceptual mediation Spatial configuration Perceptual variables Behavioral outcomes References
A. Aesthetic preferences Visual focus/ legibility/ accessibility/ centrality Enclosure/ mystery/ explorability/ spectatorship/ view framing/ borrowed scenery Dwell density ↑revisitation ↑
speed ↓
Zhang et al. (2019) [40]
Yu et al. (2021) [38]
Chen et al.(2025) [42]
Zhai et al. (2018) [22]
B. Cultural cognition Salience of cultural landmarks Cultural symbolism/ narrative understanding/ imageability consistency Dwelling at cultural nodes↑
Visual guidance
enhanced spatial memory
Chen & Yang (2023) [31]
Yu et al.(2016) [32]
C. Restoration/ safety/ social interaction Depth/ concealment/ visibility Restorativeness/ comfort/ friendliness Path preference↑
Dwelling and social interaction↑
Restoration score↑
Saadativaghar and Zarghami. (2023) [35]
Mohammadi & Ujang (2021) [37]

4. Discussion

4.1 The influence of garden spatial configuration on tourist behavior

Spatial configuration has a significant predictive effect on tourist behavior, with highly integrated paths often serving as primary circulation routes where tourists are more likely to congregate [52](Table 10). Zhai et al. [22] demonstrated that spatial accessibility is highly correlated with the integration and that integration predicts path choice. However, analysis was limited to the garden’s main routes, lacking examination of stay behavior at the micro level and failing to consider differences in tourists’ individual characteristics. As a result, the findings did not reflect how spatial configuration influences tourists’ emotional experiences and cultural understanding. Wu et al. [30] demonstrated that higher depth and intelligibility are associated with greater accessibility of spaces for tourists. However, their analysis was confined to VGA and segment angular analysis, without collecting empirical data on tourists’ actual behavior. Future research should therefore integrate observed tourist behavior and conduct more in-depth investigations of actual movement data. In addition, Mohammadi and Ujang [37] examined the relationship between spatial path accessibility and the frequency of social interaction, confirming that nodes with high accessibility and connectivity are more likely to serve as social focal points. However, the study did not fully explore external factors linking tourist behavior and spatial configuration, such as seating provision, commercial facilities, and security installations, which also play an essential role in interaction frequency.

Table 10. The relationship between garden spatial configuration and tourist behavior.

Author (Year) Sample Behavior Variable Limitations
Zhai et al. (2018) [22] Main pathways Route choice and accessibility Lacks micro-level dwell behavior and individual differences
Wu et al. (2025) [30] Node network Interpersonal interaction Lack of linkage between behavioral and perceptual variables
Mohammadi & Ujang (2021) [37] Path network Frequency of social interactions Missing contextual variables (seating, commercial services, security)
Zhang et al. (2020) [29] VGA grid cell Dwell hotspots Single behavior type; social interaction not addressed
Chen & Yang (2023) [31] Narrative unit Perception of cultural imagery No behavioral data collected; high subjectivity
Lee (2021) [34] Garden entrances and pathways Visitation frequency Lack of stratified analysis of tourist types and subjective perceptions
Mohamed et al. (2023) [39] Observed pedestrian flow Route choice Did not consider cross-cultural differences and cultural nodes

Existing studies still have certain limitations in methodology and research subjects. Zhang et al. [29] collected actual movement data from 353 tourists using recorders and confirmed that spatial visual characteristics are more likely to attract higher visit frequencies, proposing that pedestrian accessibility determines tourists’ initial visit frequency. However, the study area was limited to the Lion Grove Garden, and the data collection period did not cover either winter or summer, resulting in a lack of behavioral comparisons across seasons to verify the reliability of the findings, and leading to a relatively homogeneous behavioral pattern. Although Chen and Yang [31] although combined Space Syntax with spatial narrative theory and emphasized the guiding role of spatial focal points and cultural imagery in shaping tourists’ emotions, they did not collect empirical data on tourist’ behavior, thereby limiting the study’s objectivity. Future research should incorporate GPS data to achieve a more comprehensive understanding of how spatial configuration influences tourist behavior. Cross-cultural applicability remains a weak point in current research. For example, Mohamed et al. [39] focused on the relationship between garden path connectivity and visitor behavior but failed to consider the regulatory role of cultural background in shaping tourist actions.

Overall, integration, connectivity, and visual integration exhibit significant explanatory power for tourists’ routing and social behavior. In particular, nodes with high integration and high connectivity often become spatial focal points for visitor aggregation and interaction. Nevertheless, several limitations remain: (1) most study objects are concentrated in restricted garden types, with a lack of systematic comparison at the micro level regarding subjective perception and cultural behavioral differences; (2) insufficient control of external facilities and management conditions, with contextual variables inadequately incorporated; and (3) cultural and cross-cultural differences were not analyzed as variables.

4.2 Tourist perception as a mediating effect

This review further reveals that tourist perception serves as a mediating factor between spatial structure and behavioral patterns, thereby constructing a “structure–perception–behavior” pathway. Nevertheless, most existing studies have conducted only quantitative analyses of spatial characteristics and have failed to incorporate dynamic influencing factors, such as pedestrian flow, climate, aesthetic preferences, and temporal variation. Chen and Yang [31] found that spatial narratives enhance tourists’ emotional immersion and cultural associations. However, their study lacks quantitative evidence on how these cultural associations translate into behavioral responses. Therefore, although existing studies have begun to reveal the mediating role of tourist perception, the analysis of perceptual dimensions remains incomplete, data collection is unsystematic, and research methods are inconsistent. As a result, the mediating effect has not yet been systematically modeled. Future research should aim to deepen the theoretical construction and empirical testing of this mediating mechanism by employing standardized measurement scales and developing structural equation models. (Fig 5) visually presents the pathways between space syntax metrics and tourist perception and behavioral outcomes in existing studies, laying the groundwork for the “Structure–Perception–Behavior” framework proposed in the next section.

Fig 5. Space syntax and tourist outcomes.

Fig 5

4.3 Structure–Perception–Behavior (SPB) framework

Based on a systematic review of the relevant literature, and drawing on Mehrabian and Russell’s Stimulus–Organism–Response (SOR) model and Rapoport’s Culture–Environment–Behavior (CEB) explanatory framework, this study clarifies the “X → M → Y’‘ mediating model mechanism and constructs a “structure–perception–behavior’‘ (SPB) framework [53,54] (Fig 6). The framework emphasizes that spatial structural features can directly influence tourists’ route choice and behavioral performance through space syntax metrics such as integration, connectivity, depth, visual integration, and isovist area. Meanwhile, tourist perception (aesthetic preferences, cultural cognition, sense of safety) plays a key mediating role between physical space and behavioral performance. Spaces with high integration typically exhibit greater visual centrality and spatial accessibility. Their clear orientation and easily recognizable routes enhance the spatial configuration’s identifiability and legibility. Accordingly, the more recognizable and legible a space is, the higher its integration tends to be. In addition, high Choice increases the likelihood that a path functions as a primary route, and the formation of primary routes, in turn, reinforces high Choice. Through this mutual influence, high-choice main routes often become centers of human activity and aggregation and are more prone to high pedestrian flow and congestion. Consequently, Choice is positively associated with behavioral outcomes: the higher the Choice value, the greater the probability that a path will be traversed, thereby shaping tourists’ route preference decisions.

Fig 6. Structure–Perception–Behavior (SPB) framework.

Fig 6

Additionally, this study incorporates garden type and tourist characteristics as moderating variables, enabling the conceptual framework to compare differences across cultural backgrounds and sociodemographic attributes. The significance of this framework lies in its integration previously fragmented empirical findings into a testable theoretical model, providing a foundation for further quantitative validation and thereby advancing systematic research on the relationship between garden spatial configuration and tourist behavior.

4.4 Cross-scale methodological implications for garden spatial research

This review centers on garden spatial configuration, emphasizing gardens space as a typical form of “small-scale urban space.” By comparison, how other urban spaces at different scales influence behavioral outcomes (Table 11) provide essential references and insights for research on gardens.

Table 11. Comparison of urban spaces and behavioral outcomes across different scales of study.

Author (Year) Study objects space syntax modeling methods Main findings Data support Implications for garden research
Peponis et al.
(1990) [55]
Office buildings VGA High-integration areas exhibit significantly higher interaction frequencies than low-integration areas. In high-integration areas, interaction frequency is 2–3 times higher than in low-integration areas. In high-integration areas, interaction frequency is 2–3 times higher than in low-integration areas.
Hillier (1996) [56] School VGA Student path choice is closely related to the integration of corridors/classrooms. Primary corridors exhibit 30%–50% higher integration than secondary corridors. Garden visitors tend to choose high-integration paths as their routes.
Haq & Zimring
(2003) [57]
Hospital VGA The visibility between wards and corridors influences rounding efficiency and patient accessibility. High-visibility areas can shorten rounding routes by 25–30% and improve accessibility. High-visibility spaces in gardens help enhance accessibility and efficiency.
Choi
(1999) [58]
Museum VGA Exhibition-hall visual integration is highly correlated with visitor routes and dwell hotspots. In high-integration galleries, visitor dwell time is 1.5–2 times longer, and visitation is more concentrated. In gardens, high-integration areas are often hotspots for visitor congregation and dwelling.
Hillier & Iida
(2005) [59]
London streets Segment (Axial/Angular) Global integration is significantly associated with pedestrian flow patterns. Correlation coefficient between pedestrian flow and integration R² ≈ 0.6–0.7 Research on garden path structures can be linked to comparative analyses of urban travel patterns.
Jiang & Claramunt (2002) [60] French streets Segment Street connectivity is highly correlated with traffic volume. On high-connectivity roads, traffic volume is 40–60% higher than on low-connectivity roads. In gardens, highly connected paths often serve as primary corridors for visitor movement.

At the architectural and interior scales, VGA is widely used to reveal local visibility and patterns of occupancy. In office settings, employee interaction frequency in high-integration areas is 2–3 times higher than in low-integration areas [55]. In school buildings, the integration of primary corridors is 30%–50% higher than that of secondary corridors, exerting a significant influence on students’ route choice and space use [56]. In hospital settings, the visibility of wards and corridors is directly related to staff rounding efficiency and patient accessibility [57]. In museum spaces, the visual integration of galleries is highly correlated with visitors’ tour routes and dwell hotspots [58]. At the neighborhood and city scales, studies commonly employ segment analysis to explain traffic flows and block connectivity. The correlation between global street integration and pedestrian movement patterns can reach R² ≈ 0.6–0.7 [59]. Further studies indicate that traffic volumes on highly connected streets are 40%–60% higher than on low-connectivity streets [60].

These studies indicate that the space syntax approach can still accurately analyze individual behavioral responses in urban spaces of varying scales (office buildings, schools, hospitals, and streets). This not only reinforces the appropriateness of applying space syntax methods to “small-scale urban space (garden spaces),” but also provides a practical foundation for future cross-scale comparative research.

5. Limitations

In terms of literature retrieval, although this study searched four major platforms for published studies and sought to cover research on space syntax and gardens comprehensively, some omissions remain unavoidable. Due to the indexing mechanisms and language limitations of different databases, specific grey literature with potential research value is challenging to obtain, and exceptionally high-quality studies published in other language systems that are hosted on regional databases cannot be included. Although this study applied the PICOS criteria and the CCAT tool to conduct a rigorous qualitative appraisal of the included studies to compensate for the limitation of a relatively small sample size, the robustness of the findings is still affected to some extent. Moreover, given differences in spatial scales and modeling methods, the present study confines its discussion to the relationship between small-scale garden spaces and tourist behavior, thereby limiting cross-scale comparisons. While typical application scenarios at other scales, such as building interiors, urban streets, and campus or park environments, are briefly mentioned, the overall analytical scope remains bounded by the garden scale, and the conclusions cannot yet be readily generalized to other spatial scales. In addition, this study primarily focuses on Chinese classical gardens and certain urban gardens in Asian cities, thereby limiting the generalizability of the results. Therefore, future research could expand the range of multilingual retrieval platforms and include a broader set of studies to enlarge the sample coverage and enhance the robustness of the evidence base.

6. Conclusions

To elucidate the multiple influences shaping tourist behavior, this study systematically examines the relationship between garden spatial configuration and tourist behavior through a literature review. The findings show that existing research employing space syntax to explore this relationship has predominantly focused on East Asian traditional gardens, and that the number of such publications has increased markedly in recent years. To further clarify the core metrics of space syntax, this study integrates spatial properties with metric characteristics. It provides a detailed discussion of spatial configuration and accessibility, local control and path flow, regional connectivity, spatial intelligibility, isovist area, and extended measures. It argues that key space syntax measures such as Integration, Connectivity, Depth, Isovist area, and Visual integration have significant explanatory power for tourist behavior, and that nodes with high Integration and Connectivity tend to become spatial focal points for tourist aggregation and interaction. Meanwhile, by analyzing perceptual variables such as aesthetic preferences, cultural cognition, and a sense of safety, this study argues that tourist perception mediates between spatial configuration and behavioral patterns and accordingly develops a Structure–Perception–Behavior (SPB) framework. In doing so, the study not only integrates key findings from existing research at the local level but also, at an overall level, provides a theoretical framework and methodological support for understanding the multiple ways in which garden spaces influence tourist behavior. Finally, this study extends the discussion from garden spaces to building and interior spaces, urban blocks, and the city as a whole, and proposes cross-scale methodological implications. Overall, it not only demonstrates the applicability of space syntax in garden planning and tourist behavior research, but also points to directions for future work to construct empirical models that verify the proposed mediating mechanisms, thereby enhancing both the breadth and theoretical depth of research in this field.

Supporting information

S1 Table. Detailed search strategy.

(PDF)

pone.0339994.s001.pdf (96.6KB, pdf)
S2 Table. Crowe Critical Appraisal Tool (CCAT) form.

(PDF)

pone.0339994.s002.pdf (108.4KB, pdf)
S3 Table. PRISMA 2020 checklist.

(PDF)

pone.0339994.s003.pdf (113.3KB, pdf)
S4 Table. Numbered table of all studies.

(PDF)

pone.0339994.s004.pdf (714.8KB, pdf)

Data Availability

All relevant data are within the manuscript and its Supporting information files.

Funding Statement

The author(s) received no specific funding for this work.

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Decision Letter 0

Yile Chen

25 Aug 2025

Dear Dr. %:LAST_NAME%,

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Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. Is the manuscript technically sound, and do the data support the conclusions?

Reviewer #1: Yes

Reviewer #2: Yes

Reviewer #3: Partly

Reviewer #4: Yes

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2. Has the statistical analysis been performed appropriately and rigorously? -->?>

Reviewer #1: Yes

Reviewer #2: Yes

Reviewer #3: N/A

Reviewer #4: Yes

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3. Have the authors made all data underlying the findings in their manuscript fully available??>

The PLOS Data policy

Reviewer #1: Yes

Reviewer #2: Yes

Reviewer #3: Yes

Reviewer #4: Yes

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4. Is the manuscript presented in an intelligible fashion and written in standard English??>

Reviewer #1: Yes

Reviewer #2: Yes

Reviewer #3: Yes

Reviewer #4: Yes

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Reviewer #1: 1.While the conceptual pathway is sound, the review relies heavily on synthesizing prior findings without clearly proposing or testing a new theory. The model would benefit from a visual diagram or conceptual map.

2.Despite following PRISMA guidelines and employing the CCAT tool, the scope of analysis is narrow. Only 10 studies are included over a 9-year span. The justification for this small sample should be more robust (based on my knowledge.)

3.The synthesis could benefit from clearer distinction between quantitative behavioral data (e.g., GPS paths, density) and subjective perceptual data. Future reviews could adopt mixed-method meta-analysis frameworks.

4.Some terms like 'isovist' or 'visual integration' should be briefly defined when first used.

5.Ensure figures referenced (e.g., PRISMA diagram, Fig. 3) are embedded correctly in final layout.

6.Writing is mostly clear but would benefit from further proofreading for redundancy and flow.

Reviewer #2: The manuscript examines a pertinent and timely subject with potential significance for both scholarly inquiry and practical implementation. The study design seems methodologically robust, and the data provided corroborate the overarching conclusions. The statistical analyses utilise suitable methods and seem to have been conducted with sufficient rigour, enhancing the reliability of the findings.

The manuscript is predominantly well-composed, with arguments articulated in a coherent and logical fashion; however, minor grammatical revisions and occasional rephrasing could enhance its flow and readability. Certain terms and definitions require more precise clarification to enhance accessibility for readers from varied backgrounds.

Although the methodology is valid, the authors should offer more explicit justification for specific decisions regarding data handling, analysis, or variable selection to enhance the robustness of their approach. It would be advantageous to succinctly emphasise the originality and prospective impact of this research in the introduction, clearly articulating how it enhances current understanding.

The manuscript possesses merit and, with minor enhancements in clarity and language refinement, can significantly contribute to the literature.

Reviewer #3: This is an interesting article that accumulates recent developments in the use of spatial configuration metrics to determine patterns in tourist behaviour in gardens. The authors appear to have done a relatively comprehensive collection, final selection and description of research studies relying on existing models and standard processes. The manuscript is readable and intelligible though slightly repetitive.

Where the article falters is in going beyond simple enumeration of the methods used in each study particularly as that relates to spatial configuration. While this is indeed an emerging domain with various published papers, the strategy for the review chosen here seems lacking. The authors have chosen to do a relatively shallow reading of the methodology of each article, focusing only on metrics, whereas research that is typically considered part of the space syntax domain has produced a multitude of combinations of spatial representations, algorithms, metrics and other methodological considerations such as radius (the spatial limit to the reach of the various algorithms). This approach would have worked fine if the sample was larger, but there are only 10 studies selected and all use rather different methods of getting to the result, not always equivalent.

Because the sample is small, I would have expected a much deeper explanation of the spatial configuration methodologies. For example, a cursory reading of the studies suggests that they use different representations of space, but these are not mentioned in the manuscript. They do not appear as part of the methodology review or identified per-study. Some studies seem to use Visibility Graph Analysis (VGA) (referenced as 13, 15, 30 and 31), some Segment maps (28, 30, 32, 33) some Isovists (27, 31) and some Convex maps (20, 29). This can be problematic in some cases because metrics such as "Integration" and "Connectivity" produce different values for different representations at the same location (especially VGA and Segment maps) making comparison to human behaviour and perception difficult. Given the small sample I would have also at least expected the authors to further provide examples of the use of these methods in other scales of the built environment. Gardens are at the "small urban area" scale, meaning that the authors could have examined papers from both smaller scales (buildings such as offices, schools and hospitals, usually employing VGA) and larger scales (large urban areas and cities typically employing segment analysis).

Instead, the authors demonstrate that the studies themselves have only had surface-level examination. This is evident from examples such as:

1. attributing analysis to Gomaa et al. (32) using "Local integration" whereas the paper in question only mentions the metric in passing in the introduction,

2. referring to "depth" as a metric, which is unusable on its own and requires a location descriptor (as in Mohamed et al. (2024)[29] actually referring to it as "Step depth from the main entrance")

3. having both "connectivity" (Wu et al. (2025) [30]) and "isovist area" (Yu et al. (2016) [31]) as different metrics where they are practically the same because the two studies use VGA,

4. mentioning "extended metrics" in Tables 6 and 7, attributing it to different papers but never explaining what those metrics are

5. completely ignoring other important metrics such as control found in Mohamed et al. (2024)[29] and choice found in Wu et al (2025) [30].

This shallow approach has also prevented the authors from drawing larger conclusions in their discussion such as how and, more importantly, why some metrics affect tourist behaviour. For example the authors do identify that Integration is an important metric but do not go further to try to identify why it might correlate with tourist path selection. Is it perhaps a strategy of people who don't know a space (tourists) to traverse that space on what looks to them as the most obvious path? Is it that this is the result of exploratory behaviour as in other cases (say galleries)? The authors instead avoid the larger critical reflections (which would be fitting for a such a review) and choose to recite the various results from the studies highlighting the limitations (which seem to also come from the studies).

Other notes:

The referencing is inconsistent to the point where it creates confusion:

1. One of the main studies "Zhang et al. (2020)" referenced as 15 has a broken DOI and either the wrong title or the wrong authors. The title matches authors Zhang T., Lian Z., and Xu Y and the DOI https://doi.org/10.1080/01426397.2020.1730775.

2. It is unclear what "extended metrics" are, they are attributed to either Lee, K. (2021) in Table 6 or Huang and Lee (2023) in Table 7

Reviewer #4: PLOS ONE, Manuscript Number: PONE-D-25-34363

Title: The Influence of Garden Spatial Configuration on Tourist Behavior: A Systematic

Review Based on Space Syntax

This article presents a systematic scoping review of space syntax research on the influence of garden spatial configurations on tourist behavior. Employing the PRISMA framework, the review identifies ten relevant studies from four major databases: Web of Science, Scopus, JSTOR, and ScienceDirect. The review first highlights research that utilized spatial-perceptual methods in garden analytics from 2016 to 2025. It then identifies key syntactic metrics that significantly contribute to understanding garden spatial configurations and explaining users’ navigational behavior. Furthermore, the review explores the perceptual experiences associated with garden spaces, emphasizing the need for a more integrated analytical framework - one that incorporates emotional-perceptual simulations and cultural symbolism, both of which indirectly influence tourist behavior. The study concludes by addressing existing research gaps and suggesting directions for future investigation.

The paper presents an interesting focus, and it has the potential to be publishable if significantly revised. However, it currently suffers from several issues that undermine its quality and usefulness to the reader. I encourage the authors to undertake a major revision to address these concerns, as the paper contains valuable insights that could be of interest to readers.

Reviewer comments

First,

The biggest issue with the paper is the unclarity of its questions. The authors fail to clearly highlight the specific research questions they themselves aim to sequentially address in this study – apart from the questions that were raised by the articles of the literature review. All of which confuses the reader.

As the authors emphasized that their main research interest was 'Examining the relationship between garden spaces and touristic behavior,' they posed two questions. While RQ1 is not clear in its academic intent, and could therefore be adjusted, RQ2 is more relevant but would benefit from being developed into several operational sub-questions (among which the modified/altered RQ1 could be incorporated). This lack of clarity in the formulation of the research questions directly affects the overall rigor of the study. In its current form, the paper does not adequately address the research operational questions, leaving the reader with a conclusion that offers little specificity regarding results relevant to the central focus. The final sections continue to reference existing literature rather than engaging with the study’s own findings. A stronger approach would have been to adopt a singular overarching focus (examining the relationship between garden spaces and touristic behavior), develop several operational sub-questions, rigorously investigate each of them, and then provide a conclusive answer supported by empirical evidence/finding. Although the authors have made considerable effort and generated the findings needed, the knowledge that they developed is not presented in a structured or clear way; important findings are thrown as familiar statements, and the headings and the sub-headings of the sections do not always hint to the link between the question inquired and the content presented. Based on a review of the current content of their study, the authors should formulate three to four operational questions and restructure the study to present clear, definitive answers.

In general, the authors need to revise the text, develop a multi-layered discussion, and clearly highlight their contributions at three levels: (1) data collection and PRISMA findings, (2) the application of space syntax metrics and how these metrics are used and analyzed to reveal specific configurational–behavioral experiences - in addition to the other supporting theories if any, and (3) the interpretations derived from the multi-layered study and the cumulative insights of the ten reviewed papers.

Second

The methodology outlining how the collected data is investigated, interpreted, and how each layer of the analysis and research questions is addressed needs to be presented more clearly, both in text and through a flow chart. While the authors included visual graphs and tables related to the literature review and its summary. However, in the sections /levels where their own input is most important and potentially influential, this impact is minimized. Summaries concluded section-paragraphs, interpretations, and visualizations should be used more effectively to emphasize their contribution and to clearly demonstrate the methodology applied in screening and analyzing (the content of) the selected papers, which is critical. A chart detailing this methodology is expected to be incorporated prior to the presentation of the results.

Furthermore, the Methods section unnecessarily expands on subsections 2.2 (Criteria) and 2.4 (Quality Assessment), which distracts the flow of the main core topic. It could be more effectively reduced and summarized in a simple paragraph and a table.

It should also be clarified that, while many studies employ similar large databases, the relatively small number of papers reviewed in this specific topic limits the extent to which statistical findings alone can be relied upon. This makes a deeper level of analysis and interpretation in this study particularly important.

Third

While Table 4. - which appears in section 3.1., provides a comprehensive summary and introduces several socio-perceptual and phenomenological tools/theories, it would be useful to include a paragraph(s) briefly describing the other tools (beyond space syntax) that are mentioned. In other words, authors need to present a brief explanation to the “theories” that appear in the column of “theory” Table 4., and to clarify how these relate, or not relate, to Space Syntax, and consequently the title of this study. (Examples TG, CL, NRT, IL, TB,….. and why they are included).

In addition, the meaning of 'Visitor involvement level' in Table 4 is unclear; its relevance to the investigation should be clarified; otherwise, it could be omitted.

Fourth,

Table 6. in Section 3.3 could be expanded by adding images of the layouts of the 10 cases studied with certain space syntax and visibility maps (with clear references). The visuals of the space syntax metrics as reflected in graphs usually help understanding the findings and help in understanding the context.

Fifth,

To improve the readability of Table 7 which appears in Section 3.4, it would be helpful to add a column entitled “Space Syntax Metrics” to clarify the metrics used in each of the studies listed. Alternatively, Tables 6 and 7 could be combined into a single table.

Sixth,

Section 3.5 is an important part of the paper as it highlights the distinction between the impact of garden spatial configuration and perceptual values such as aesthetic preferences, cultural cognition, and sense of safety. The authors should emphasize this section more clearly to underline their contribution. Including a table that summarizes these issues would also strengthen the presentation.

Seventh,

The presentation of the text in Section 4.1 gives the impression of abundance and unnecessary repetition. The authors should clarify the distinctions between the metrics, their analytical value, and the interpretive insights that emerge when different space syntax indicators are combined. Since the power of integrating tools is central to this section and represents the authors’ key contribution, it should not be downplayed by the inclusion of repeated content. Reference to the 10 studied papers could help (Optional).

Eighth,

The authors are advised to include a table at the end of Section 4.2, followed by an interpretive paragraph.

Ninth,

Section 4.4 would benefit from a concluding paragraph that summarizes the findings and highlights the authors’ interpretations, thereby underscoring their own voice and contribution.

Tenth,

The conclusions should directly address the research questions and provide clear answers at both the local and global levels.

Other issues:

One,

The following paper that you referred to in your study is an excellent example, particularly in how it demonstrates the alignment between paragraphs and figures (see, for instance, Figures 3 and 4): Lee, J.H.; Ostwald, M.J.; Zhou, L. (2023). Socio-Spatial Experience in Space Syntax Research: A PRISMA-Compliant Review. Buildings, 13(3), 644. https://doi.org/10.3390/buildings13030644

Two,

A note to look at:

At the 4th International Space Syntax Symposium in 2003, M. Abrioux presented an article entitled 'Body, eye and imagination: A meditation on the dynamics of space in French and English gardening.' The paper applied space syntax to garden analysis, emphasizing the perceptual and imaginative dimensions of spatial experience in French and English garden design. Although not a comprehensive study of gardens, it represents a key contribution in that year by extending space syntax concepts into the context of landscape architecture and highlighting how garden design can shape visitors’ perception and experience of space. The research likely focused on the subtle, qualitative aspects of spatial design rather than just quantitative metrics, which are more common in other space syntax applications. It might help to add this paper to your references for its direct relevance to the chronological literature review. Following are the details of the reference.

Abrioux, M. (2003). Body, eye and imagination: A meditation on the dynamics of space in French and English gardening. Paper presented at the 4th International Space Syntax Symposium, London.

**********

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Reviewer #1: Yes:  Adib Amany

Reviewer #2: Yes:  SAYON PRAMANIK

Reviewer #3: No

Reviewer #4: Yes:  Shatha Malhis

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PLoS One. 2026 Jan 2;21(1):e0339994. doi: 10.1371/journal.pone.0339994.r003

Author response to Decision Letter 1


22 Sep 2025

Response to Reviewers' Comments

Title: The Influence of Garden Spatial Configuration on Tourist Behavior: A Systematic Review Based on Space Syntax

Manuscript ID: PONE-D-25-30762

We sincerely thank the academic editor and reviewers for their valuable feedback. We have addressed all comments and revised the manuscript accordingly. Our detailed responses are provided below.

Reviewer #1:

1.Comment:While the conceptual pathway is sound, the review relies heavily on synthesizing prior findings without clearly proposing or testing a new theory. The model would benefit from a visual diagram or conceptual map.

Response: Thank you for this helpful suggestion. We have added a visual framework to clarify the conceptual pathway and make the synthesis more transparent. The figure is placed at the end of the Introduction and labeled “Fig 1. Flow diagram for literature review.” It outlines the key constructs and their relationships and summarizes the review process. We believe this diagram strengthens the logic of the model and improves readability.

In addition, we have introduced a mechanism-oriented synthesis in Section 4.3 “Structure–Perception–Behavior (SPB) framework,” illustrated in “Fig 6. Structure–Perception–Behavior (SPB) framework.” This framework articulates how spatial structure (e.g., integration, connectivity, visual integration, isovist area) influences tourist perception (openness/readability, cultural cognition, safety/restoration), which in turn shapes behavioral outcomes such as path choice, dwell, and revisit intention.

2.Comment:Despite following PRISMA guidelines and employing the CCAT tool, the scope of analysis is narrow. Only 10 studies are included over a 9-year span. The justification for this small sample should be more robust (based on my knowledge.)

Response: Thank you for pointing this out. In response, we have re-screened the studies under Section 2.3. Study selection, and the final number of included studies has been updated to 18, in accordance with the predefined inclusion criteria. We have also revised the corresponding flow chart, now presented as “Fig 2. PRISMA flow diagram.”

Furthermore, in Section 2.2. Criteria and Quality assessment, we have added the following explanation:

“Although the search covered major databases, the number of studies ultimately included was relatively small; therefore, this study does not rely solely on statistical frequencies but adopts an interpretive synthesis, emphasizing the correspondence between ‘metrics–representations–behavior’ and the elucidation of the ‘structure–perception–behavior’ mechanism.”

We believe these revisions provide a more robust justification for the sample size and clarify the methodological rationale.

3.Comment:The synthesis could benefit from clearer distinction between quantitative behavioral data (e.g., GPS paths, density) and subjective perceptual data. Future reviews could adopt mixed-method meta-analysis frameworks.

Response: Thank you for this constructive comment. In the revised manuscript, we have provided a clearer distinction between quantitative behavioral data and subjective perceptual data. Specifically, in Section 3.1 “Research characteristics”, we added Table 4. Characteristics of the studies, which systematically summarizes the included studies according to different spatial representations (VGA, Segment, Isovist, Convex) and links them to different types of behavioral outcomes.

For subjective perceptual data, we added a dedicated subsection “3.5. Tourist perception as a mediating effect”, which systematically synthesizes perceptual variables such as aesthetic preference, cultural cognition, and safety/restoration. These perceptual variables are explicitly linked to spatial-structural drivers and behavioral outcomes. To complement this, we introduced Table 8. The impact of tourist perception on behavioral outcomes, which presents the relationships in a structured manner.

We believe these additions enhance the clarity of the synthesis and address the reviewer’s request.

4.Comment:Some terms like 'isovist' or 'visual integration' should be briefly defined when first used.

Response: Thank you for pointing this out. In the revised manuscript, we have added brief definitions of key terms when they first appear in Section 3.3 “Characteristics of space syntax indicators.” Specifically:

3.3.1. Depth and Integration

Specific content added: “Mohamed et al.[30] emphasize that depth refers to the total number of steps required from a spatial unit to other spaces, which can reveal the marginal characteristics of the spatial structure; depth is effective for assessing less-frequented areas…… Conversely, lower integration values indicate that the space lies in peripheral and relatively enclosed areas, with a higher degree of enclosure and concealment[45].”

3.3.2. Control value and Choice

Specific content added: “Mohamed et al.[30] indicate that the control value measures the relative control of a spatial node over its adjacent nodes within a spatial network, reflecting the functional mechanism of the focal spatial unit in the local spatial structure and serving to assess its effects on surrounding spatial units…...Higher choice values indicate that the spatial unit plays a central role in route selection within the overall network[45].”

3.3.3. Connectivity and Intelligibility

Specific content added: “Wu et al.[31] state that connectivity refers to the number of links from a given spatial unit to its adjacent units, reflecting local connectedness…….Lower values indicate a more complex structure, increasing the difficulty of spatial understanding. Based on the intelligibility value, spaces can be classified into three categories[48] (Table 6). ”

3.3.4. Isovist Area, Visual Integration and Extended Metrics

Specific content added: “Benedikt.[49] emphasizes that the isovist area refers to the area of the spatial region fully visible from a given observation point; the larger the isovist area, the broader the visual extent covered by the space and the greater its openness and visibility…….Huang and Lee.[28] examined the integration of Baidu heatmaps with space syntax and found a statistically significant correlation between integration and visitor clustering intensity.”

5.Comment:Ensure figures referenced (e.g., PRISMA diagram, Fig. 3) are embedded correctly in final layout.

Response: Thank you for this reminder. We have carefully checked all figures in the revised manuscript, to ensure that they are correctly referenced and embedded in the final layout.

6.Comment:Writing is mostly clear but would benefit from further proofreading for redundancy and flow.

Response: Thank you for this valuable comment. We have carefully proofread the entire manuscript to improve readability, reduce redundancy, and enhance the overall flow of the text. We believe these revisions have significantly improved the clarity and coherence of the paper.

Reviewer #2:

1.Comment:The manuscript examines a pertinent and timely subject with potential significance for both scholarly inquiry and practical implementation. The study design seems methodologically robust, and the data provided corroborate the overarching conclusions. The statistical analyses utilise suitable methods and seem to have been conducted with sufficient rigour, enhancing the reliability of the findings. The manuscript is predominantly well-composed, with arguments articulated in a coherent and logical fashion; however, minor grammatical revisions and occasional rephrasing could enhance its flow and readability. Certain terms and definitions require more precise clarification to enhance accessibility for readers from varied backgrounds.

Response: Thank you for this helpful comment. We have carefully proofread the manuscript and made minor grammatical revisions and wording adjustments to improve clarity, readability, and flow. Additionally, In the revised manuscript, we have provided clearer definitions of the technical terms used in the study. Specifically, these definitions have been added under Section 3.3 “Characteristics of space syntax indicators”, including:

3.3.1. Depth and Integration

Specific content added: “Mohamed et al.[30] emphasize that depth refers to the total number of steps required from a spatial unit to other spaces, which can reveal the marginal characteristics of the spatial structure; depth is effective for assessing less-frequented areas…… Conversely, lower integration values indicate that the space lies in peripheral and relatively enclosed areas, with a higher degree of enclosure and concealment[45].”

3.3.2. Control value and Choice

Specific content added: “Mohamed et al.[30] indicate that the control value measures the relative control of a spatial node over its adjacent nodes within a spatial network, reflecting the functional mechanism of the focal spatial unit in the local spatial structure and serving to assess its effects on surrounding spatial units…...Higher choice values indicate that the spatial unit plays a central role in route selection within the overall network[45].”

3.3.3. Connectivity and Intelligibility

Specific content added: “Wu et al.[31] state that connectivity refers to the number of links from a given spatial unit to its adjacent units, reflecting local connectedness…….Lower values indicate a more complex structure, increasing the difficulty of spatial understanding. Based on the intelligibility value, spaces can be classified into three categories[48] (Table 6). ”

3.3.4. Isovist Area, Visual Integration and Extended Metrics

Specific content added: “Benedikt.[49] emphasizes that the isovist area refers to the area of the spatial region fully visible from a given observation point; the larger the isovist area, the broader the visual extent covered by the space and the greater its openness and visibility…….Huang and Lee.[28] examined the integration of Baidu heatmaps with space syntax and found a statistically significant correlation between integration and visitor clustering intensity.”

2.Comment:Although the methodology is valid, the authors should offer more explicit justification for specific decisions regarding data handling, analysis, or variable selection to enhance the robustness of their approach. It would be advantageous to succinctly emphasise the originality and prospective impact of this research in the introduction, clearly articulating how it enhances current understanding. The manuscript possesses merit and, with minor enhancements in clarity and language refinement, can significantly contribute to the literature.

Response: Thank you for this constructive comment. In the revised manuscript, we have provided more explicit justification for the methodological framework. At the end of the Introduction, we added Fig. 1 “Flow diagram for literature review”, which visually illustrates the conceptual pathway and clarifies how data handling, analysis, and variable selection were systematically conducted. This addition strengthens the transparency and robustness of the methodology. Furthermore, we emphasized the originality and prospective impact of this research in the Introduction, Specific content added: “The necessity of this systematic review stems from the current paucity of comprehensive syntheses based on Space Syntax that analyze the interrelationship between garden spatial structure and tourist behavior. Although prior studies have confirmed the correlation between spatial configuration and tourist behavior, a lack of systematic reviews persists—particularly those integrating the explanatory power and adaptability of different spatial variables. ”

Reviewer #3:

1.Comment:This is an interesting article that accumulates recent developments in the use of spatial configuration metrics to determine patterns in tourist behaviour in gardens. The authors appear to have done a relatively comprehensive collection, final selection and description of research studies relying on existing models and standard processes. The manuscript is readable and intelligible though slightly repetitive. Where the article falters is in going beyond simple enumeration of the methods used in each study particularly as that relates to spatial configuration. While this is indeed an emerging domain with various published papers, the strategy for the review chosen here seems lacking. The authors have chosen to do a relatively shallow reading of the methodology of each article, focusing only on metrics, whereas research that is typically considered part of the space syntax domain has produced a multitude of combinations of spatial representations, algorithms, metrics and other methodological considerations such as radius (the spatial limit to the reach of the various algorithms). This approach would have worked fine if the sample was larger, but there are only 10 studies selected and all use rather different methods of getting to the result, not always equivalent. Because the sample is small, I would have expected a much deeper explanation of the spatial configuration methodologies. For example, a cursory reading of the studies suggests that they use different representations of space, but these are not mentioned in the manuscript. They do not appear as part of the methodology review or identified per-study. Some studies seem to use Visibility Graph Analysis (VGA) (referenced as 13, 15, 30 and 31), some Segment maps (28, 30, 32, 33) some Isovists (27, 31) and some Convex maps (20, 29). This can be problematic in some cases because metrics such as "Integration" and "Connectivity" produce different values for different representations at the same location (especially VGA and Segment maps) making comparison to human behaviour and perception difficult. Given the small sample I would have also at least expected the authors to further provide examples of the use of these methods in other scales of the built environment.

Response: Thank you for this thoughtful comment. We have strengthened the review strategy and deepened the methodological synthesis as follows:

a. Clarifying the review strategy — We added a visual overview of the research process at the end of the Introduction, presented as Fig. 1 “Flow diagram for literature review.” This figure makes the review strategy and steps explicit.

b. Updating the study sample and screening — In Section 2.3 “Study selection,” we re-screened the literature and updated the final sample to 18 studies, and we revised the PRISMA chart accordingly as Fig. 2 “PRISMA flow diagram.” This explicitly documents the sample size and screening pathway.

c. Deepening the methodological synthesis — In Section 3.1 “Research characteristics,” we added the following content and a new table to move beyond a simple enumeration of metrics:

Specific content added: “This study provides a systematic synthesis of the 18 included studies (Table 4), summarizing the following dimensions: study location; spatial representations (VGA, Segment, Isovist, Axial); space syntax metrics (e.g., Integration, Connectivity, Choice, Control, Depth, Intelligibility); radius/weight settings; and behavioral outcomes. Due to differences in computational foundations and scale semantics across representations, identically named metrics (Integration, Connectivity) may yield different values at the same location and lead to different interpretations, with the discrepancy between VGA and Segment being particularly pronounced. To ensure comparability, we group by representation during synthesis and interpret the relationships between metrics and behavior/perception under similar radius/weight settings, avoiding direct numerical comparisons across representations.”

We also added Table 4 “Characteristics of the studies.” which, for each study, records the spatial representation, metrics, radius/weight settings, study sites, and behavioral outcomes, thereby providing a transparent, per-study methodological profile rather than a metric-only listing.

d. Term definitions to support cross-representation reading — In Section 3.3 “Characteristics of space syntax indicators” (subsections 3.3.1–3.3.4), we added concise definitions and explanations for core indicators (Depth/Integration; Control/Choice; Connectivity/Intelligibility; Isovist Area/Visual Integration and extended

Attachment

Submitted filename: Response to Reviewers.docx

pone.0339994.s006.docx (53.3KB, docx)

Decision Letter 1

Yile Chen

30 Oct 2025

Dear Dr. Li,

Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’s publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process.

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Kind regards,

Yile Chen, Ph.D. in Architecture

Academic Editor

PLOS ONE

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Reviewer #1: All comments have been addressed

Reviewer #2: All comments have been addressed

Reviewer #3: (No Response)

Reviewer #4: All comments have been addressed

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Reviewer #1:  (No Response)

Reviewer #2:  This manuscript, "The Influence of Garden Spatial Configuration on Tourist Behaviour: A Systematic Review Based on Space Syntax," conducts a detailed review to investigate a pertinent and emerging subject that connects perception, spatial configuration, and tourist behaviour. The revision demonstrates a significant enhancement in the theoretical framing, clarity, and structure.

Advantages:

The study now adheres to PRISMA 2020 with rigour, utilising transparent inclusion criteria and quality appraisals (CCATs). The methodology and research questions are explicitly stated. The new Structure, Perception and Behaviour (SPB) framework and cross-scale comparison significantly improve the conceptual depth. Key Space Syntax metrics are defined, and tables and figures have been revised to enhance consistency and readability.

Suggestions for Minor Enhancement:

Clarify whether the SPB framework is a synthesis from the literature or a proposed theoretical model. Provide a concise explanation of the correlation between behavioural outcomes (e.g., cognitive ease, legibility) and metrics such as integration and choice. Include a brief commentary on the cultural distinctions between Western and Eastern garden typologies. The final round of English language and formatting refinement will be conducted.

Overall:

The manuscript is conceptually valuable and methodologically robust. It will make a substantial contribution to the literature on tourist behaviour and spatial configuration with some minor theoretical clarification and language polishing.

Reviewer #3:  Thank you for taking the time to respond and address the issues in the paper. Here are some more comments:

1. In response to Reviewer #3, 5. Comment Response: I mentioned Connectivity and Isovist Area as the same exactly _because both studies use VGA_ in which case they are the indeed practically the same. The original Hillier Connectivity refers to axial connections (essentially the number of junctions of a street), but in VGA Connectivity (or Visual Connectivity if you'd rather make this clearer) refers to the number of cells that are visible from a cell. This is calculated by creating a 360-degree isovist from each cell and looking at the number of cells that fall within the isovist polygon. The larger the area of the isovist polygon (what Isovist Area measures), the more the cells; and the smaller the cells, the more Visual Connectivity will approach Isovist Area. There is a finer point about intervisibility, but the reality of the VGA grid cell construct is that there are no non-reciprocal relationships (i.e. every cell that cell A can "see" can also "see" A). This is exactly because we use 360-degree isovists and because there are no studies (as far as I'm aware) that actually look at VGA with one-way visibility materials (though even in that case the practical - what the code outputs - result will once again be the same). If you'd like to dig deeper into the details of VGA metric calculation look at Koutsolampros (2021) section 4.3.1 on page 124, or Koutsolampros et al. (2019).

2. In section 3.1 it is not immediately clear that you mean that there are identically named metrics across representations. I would rephrase otherwise it seems that Integration and Connectivity are somehow identically named between them.

3. While table 4 is certainly welcome it seems that there has not been enough attention to detail:

3.a. For Huang & Lee (2023), "Kernel density estimation" and "heatmap" are not spatial representations.

3.b. For Chen & Yang (2025), what are "Isovist fields"? These are not explained anywhere.

3.c. For Mohammadi & Ujang (2021), what are experiential maps? Not explained anywhere. Are they spatial representations? How?

3.d. For Yu et al. (2021), it seems the authors use convex, not axial, even if they mention axial in some places.

3.e. For Zhang et al. (2019), you say "VGA + Depthmap", but Depthmap is just the tool for (among other things) carry out VGA.

3.f. For Chen et al. (2025), you say "Isovist polygons & Parameters", why not just "Isovists", why is this different to "Isovist fields" above, and what are "Parameters" (certainly not a representation).

4. In section 3.3 "visual" indicators are also "topological" due to the way that the grid is constructed (see comment 1 and related references). Either actually state the difference in measurement (topological/visual, metric, angular), or just actually specify that these refer to different representations (segment, convex, grid/VGA).

5. In 3.3.1 you are describing Topological/Visual or "Step" depth (number of steps to get somewhere). There's also metric depth and angular depth. Please specify the name (and ideally everywhere else).

6. In 3.3 generally; I don't understand why the grouping of metrics in this way (and it's not explained). Why "Control value and Choice"? Why does Control have "value" next to it and Choice does not? Why are Connectivity and Intelligibility in the same section? Please revise and group the metrics in a more meaningful way.

7. In 3.3.3, formula (6) doesn't mean anything. Intelligibility comes from using a specific statistical process - please explain it and specify the formula.

8. In 3.3.4, it is a strange statement that "visual integration" is good for lingering and photography given that areas with high integration tend to be intermediate central pathways (correctly assumed to be generating social interaction). If this is from the authors then specify the exact page otherwise explain.

9. In 3.3.4 (again), the "Common forms" mentioned are of combinations, not of metrics, making this harder to understand. What kind of metrics come out of the combinations with GPS trajectories? Also, questionnaire results are usually output or "dependent" metrics, so I wouldn't include them as metrics that may influence human behaviour or perception.

10. I noticed in 4.1 that there is a full stop after the names of authors even if they are just one or two (and not "et al."), for example with "In addition, Lee.[34] elucidated the relationship". Please correct throughout.

11. In section 6 "Different spatial representations" should have a space prior to the previous full stop.

Reviewer #4:  PLOS ONE, Manuscript Number: PONE-D-25-34363R1

Title: The Influence of Garden Spatial Configuration on Tourist Behavior: A Systematic

Review Based on Space Syntax

As a reviewer assessing the revised manuscript (Number: PONE-D-25-34363R1), I am satisfied with the revisions made by the authors. They have addressed all of my previous comments and suggestions comprehensively, which has strengthened the manuscript. The manuscript is now in substantially better shape, and I have no further comments at this stage.

**********

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Reviewer #1: Yes:  Adib Amany

Reviewer #2: Yes:  SAYON PRAMANIK

Reviewer #3: No

Reviewer #4: Yes:  Shatha Malhis

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PLoS One. 2026 Jan 2;21(1):e0339994. doi: 10.1371/journal.pone.0339994.r005

Author response to Decision Letter 2


7 Dec 2025

Response to Reviewers' Comments

Title: The Influence of Garden Spatial Configuration on Tourist Behavior: A Systematic Review Based on Space Syntax

Manuscript Number : PONE-D-25-34363R1

We sincerely thank the academic editor and reviewers for their valuable feedback. We have addressed all comments and revised the manuscript accordingly. Our detailed responses are provided below.

Journal Requirements:

1. If the reviewer comments include a recommendation to cite specific previously published works, please review and evaluate these publications to determine whether they are relevant and should be cited. There is no requirement to cite these works unless the editor has indicated otherwise.

Response: Thank you for the guidance. In line with the journal’s requirement, we carefully reviewed the publications mentioned by the reviewer. Following an independent relevance check, we found that these works are not essential to the specific focus of our review (garden-scale spatial configuration and tourist behavior using space syntax) and would introduce overlap without adding substantive value. Accordingly, we have removed those citations in the revision.

2. Please review your reference list to ensure that it is complete and correct. If you have cited papers that have been retracted, please include the rationale for doing so in the manuscript text, or remove these references and replace them with relevant current references. Any changes to the reference list should be mentioned in the rebuttal letter that accompanies your revised manuscript. If you need to cite a retracted article, indicate the article’s retracted status in the References list and also include a citation and full reference for the retraction notice.

Response: We have rechecked all references one by one to ensure completeness, accuracy, and retraction status. To the best of our knowledge at this revision stage, none of the cited works have been retracted. If any item is later found to be retracted, we will replace it with the most current and relevant source in accordance with the journal’s policy.

_____________________________________________________________________

Reviewer #1: (No Response)

Reviewer #2:

1.Suggestions for Minor Enhancement:

(1) Clarify whether the SPB framework is a synthesis from the literature or a proposed theoretical model.

Response: Thank you for this helpful suggestion. We now explicitly clarify the provenance of the SPB framework in Section 4.3.Structure-Perception-Behavior (SPB) framework : it is a theory-informed synthesis from the literature, not a wholly new theory. Building on Mehrabian & Russell’s Stimulus–Organism–Response (SOR) model and Rapoport’s Culture–Environment–Behavior (CEB) framework, we articulate the mediating mechanism as X (spatial structure via space-syntax metrics) → M (tourist perception: aesthetics, legibility, cultural cognition, safety, restoration) → Y (behavioral outcomes: route choice, dwell time, social interaction), and construct the resulting Structure–Perception–Behavior (SPB) framework. The revised wording is: “Based on a systematic review of the relevant literature, and drawing on Mehrabian and Russell’s SOR model and Rapoport’s CEB explanatory framework, this study clarifies the “X → M → Y” mediating mechanism and constructs a “structure–perception–behavior” (SPB) framework.”

(2) Provide a concise explanation of the correlation between behavioural outcomes (e.g., cognitive ease, legibility) and metrics such as integration and choice.

Response: Thank you for the suggestion. We have added a concise explanation in Section 4.3 “Structure–Perception–Behavior (SPB) framework.” The new text clarifies how behavioural outcomes (e.g., cognitive ease and legibility) relate to key space-syntax metrics:

“Spaces with high integration typically exhibit greater visual centrality and spatial accessibility. Their clear orientation and easily recognizable routes enhance the spatial configuration's identifiability and legibility. Accordingly, the more recognizable and legible a space is, the higher its integration tends to be. In addition, high Choice increases the likelihood that a path functions as a primary route, and the formation of primary routes, in turn, reinforces high Choice. Through this mutual influence, high-choice main routes often become centers of human activity and aggregation and are more prone to high pedestrian flow and congestion. Consequently, Choice is positively associated with behavioral outcomes: the higher the Choice value, the greater the probability that a path will be traversed, thereby shaping tourists' route preference decisions.”

(3) Include a brief commentary on the cultural distinctions between Western and Eastern garden typologies.

Response: Thank you for the helpful suggestion. We have added a brief commentary on cultural distinctions between Western and Eastern garden typologies in Section 1. Introduction. The new paragraph reads:

“Across different civilizational lineages, the evolutionary trajectories and spatial connotations of garden types differ markedly. For instance, Eastern gardens, influenced by Confucian, Taoist, and Buddhist philosophies, emphasize the creation of spaces that embody the "unity of heaven and humanity," personal cultivation, and transcendent mental states. Within this framework, Chinese imperial gardens, shaped by ritual systems and imperial discourse, emphasize grand layouts and central axis order, symbolizing political power. Private gardens, however, favored the "microcosmic" landscape aesthetic, emphasizing the literati's appreciation of shifting vistas and self-cultivation through "scenes that change with every step."Japanese gardens, inheriting early Chinese Buddhist traditions, ultimately evolved under the influence of Zen and the tea ceremony to use stones, sand, and moss as primary elements, creating wabi-sabi aesthetics and meditative spaces. In contrast to the Eastern pursuit of natural beauty, Western gardens emphasize the unity of religion and power through converging axes and waterways. Examples include Renaissance gardens that express "rational domination over nature" through geometric order, and Baroque gardens that reinforce monarchical authority through spatial hierarchy. Within contemporary urban contexts, gardens, whether rooted in Eastern traditions or Western lineages, have become spatial vessels for recreation, sightseeing, and social interaction for both residents and visitors. ”

(4) The final round of English language and formatting refinement will be conducted.

Response: We conducted in-depth revisions to key sections—the Abstract, Introduction, Conclusions, and Limitations—and applied targeted language and formatting edits to the remaining content to improve clarity and coherence. No substantive changes were made to the study design, data, or results.

Reviewer #3:

1.In response to Reviewer #3, 5. Comment Response: I mentioned Connectivity and Isovist Area as the same exactly _because both studies use VGA_ in which case they are the indeed practically the same. The original Hillier Connectivity refers to axial connections (essentially the number of junctions of a street), but in VGA Connectivity (or Visual Connectivity if you'd rather make this clearer) refers to the number of cells that are visible from a cell. This is calculated by creating a 360-degree isovist from each cell and looking at the number of cells that fall within the isovist polygon. The larger the area of the isovist polygon (what Isovist Area measures), the more the cells; and the smaller the cells, the more Visual Connectivity will approach Isovist Area. There is a finer point about intervisibility, but the reality of the VGA grid cell construct is that there are no non-reciprocal relationships (i.e. every cell that cell A can "see" can also "see" A). This is exactly because we use 360-degree isovists and because there are no studies (as far as I'm aware) that actually look at VGA with one-way visibility materials (though even in that case the practical - what the code outputs - result will once again be the same). If you'd like to dig deeper into the details of VGA metric calculation look at Koutsolampros (2021) section 4.3.1 on page 124, or Koutsolampros et al. (2019).

Response: Thank you for the clear explanation and the references. We sincerely appreciate your professional guidance—this suggestion has significantly improved the precision of the manuscript’s terminology.

2. In section 3.1 it is not immediately clear that you mean that there are identically named metrics across representations. I would rephrase otherwise it seems that Integration and Connectivity are somehow identically named between them.

Response: Thank you for flagging the potential ambiguity. To avoid the impression that metrics are identically named across different representations, we have revised Section 3.1 (“Research characteristics”). The paragraph now reads:

“This study provides a systematic synthesis of the 18 included studies (Table 4). The general characteristics were summarized across the following dimensions: country of publication, study location, spatial analysis, and space syntax modeling methods, core space syntax metrics (integration, connectivity, choice, control), radius or weighting settings, and reported outcomes. Specifically, spatial analysis and space syntax modeling methods comprised two categories: (1) visualization- or statistics-based analyses, including kernel density estimation (KDE), heatmaps, and experiential maps; and (2) space syntax modeling methods, including axial maps, visibility graph analysis (VGA), segment analysis, and isovist-based models. Notably, axial, segment, and VGA analyses emphasize the global network structure or connectivity, whereas the isovist analysis focuses on local field-of-view visibility”.

3. While table 4 is certainly welcome it seems that there has not been enough attention to detail:

3.a. For Huang & Lee (2023), "Kernel density estimation" and "heatmap" are not spatial representations.

Response: Thank you for the reviewer’s correction. We agree that Kernel Density Estimation (KDE) and heatmaps are not spatial representation/modeling methods. We have corrected Table 4: Characteristics of the studies, reclassifying them under “Visualization and statistical analysis” rather than “Spatial representation/model,” and we have updated the table headers and footnotes accordingly and standardized the terminology throughout the manuscript.

In addition, for reasons of scholarly transparency and copyright compliance: most illustrative figures are owned by the original articles or institutions and should not be republished without explicit permission; even with attribution, such reuse may exceed fair-use limits. Therefore, we have made minor structural adjustments to Table 4. Characteristics of the studies and, in the table notes, direct readers to consult the original figures via the corresponding reference numbers.

3.b. For Chen & Yang (2025), what are "Isovist fields"? These are not explained anywhere.

Response: Thank you for pointing this out. Upon verification, we found that Chen & Yang (2025) should in fact be Chen & Yang (2023). This has been corrected in Table 4. Characteristics of the studies, and the modeling method has been explicitly identified as “Isovist (visibility model).” To avoid ambiguity, we have replaced “isovist fields” with “isovist” throughout the manuscript and added the following note in the main text and in the Table 4 notes: Isovist: the portion of space visible from a given observation point under conditions of spatial occlusion.

3.c. For Mohammadi & Ujang (2021), what are experiential maps? Not explained anywhere. Are they spatial representations? How?

Response: Thank you for the clarification request. We have clarified in the table notes that “experiential maps” are defined as: “Experiential maps: records of participants’ subjective experiences and behaviors within the site.” Accordingly, in Table 4. Characteristics of the studies, we have updated the column header to “Spatial Analysis and Modeling Methods” to avoid ambiguity.

3.d. For Yu et al. (2021), it seems the authors use convex, not axial, even if they mention axial in some places.

Response: Thank you for the helpful observation. We have corrected the entry for Yu et al. (2021) in Table 4. Characteristics of the studies: the space-syntax representation has been updated from “axial” to “convex.”

3.e. For Zhang et al. (2019), you say "VGA + Depthmap", but Depthmap is just the tool for (among other things) carry out VGA.

Response: Thank you for the correction. To improve accuracy, we have updated Table 4. Characteristics of the studies by changing Zhang et al. (2019) from “VGA + Depthmap” to VGA only.

3.f. For Chen et al. (2025), you say "Isovist polygons & Parameters", why not just "Isovists", why is this different to "Isovist fields" above, and what are "Parameters" (certainly not a representation).

Response: Thank you for the suggestion. We have standardized the terminology in Table 4: Characteristics of the studies, correcting “Isovist polygons & Parameters” to “Isovists ”, and added a footnote definition to avoid ambiguity. Specifically: “Isovist: the visible space from a given point under conditions of spatial occlusion.”

4. In section 3.3 "visual" indicators are also "topological" due to the way that the grid is constructed (see comment 1 and related references). Either actually state the difference in measurement (topological/visual, metric, angular), or just actually specify that these refer to different representations (segment, convex, grid/VGA).

Response: Thank you for the constructive comment. We have rewritten Section 3.3, “Characteristics of Space Syntax Indicators,” to eliminate ambiguity and improve readability. The specific revisions are as follows:

“Space Syntax is a theoretical and methodological framework for analyzing the relationship between spatial structures and human behavior [46]. Spatial configuration metrics derived from Space Syntax modeling, such as those based on axial maps and segment maps, primarily include integration, connectivity, depth, control, mean depth, and relative asymmetry[47], these metrics focus on spatial accessibility and connectivity. Visual features mainly include visual connectivity, visual integration, visual selectivity, visible area, and visible boundary length[48], these are based on the VGA (Visual Area Gauge) in spatial syntactic modeling methods, and these metrics focus on visual accessibility and visual perception. Therefore, both theoretically possess topological properties, but there are certain differences in their spatial syntactic modeling methods. The 18 articles included in this study cover topics such as depth value, integration, control value, selectivity, connectivity, visible area, visual integration, and composite indicators. To further understand the core indicators of Space Syntax, this study integrates spatial attributes and their metric characteristics to provide a detailed elaboration on spatial structure and accessibility, local control and path flow, local connectivity, spatial intelligibility, isovist area and visual integration, as well as extended metrics.”

5. In 3.3.1 you are describing Topological/Visual or "Step" depth (number of steps to get somewhere). There's also metric depth and angular depth. Please specify the name (and ideally everywhere else).

Response: Thank you for the helpful suggestion. We have revised Section 3.3.1 “Core Space Syntax Metrics”, The specific revisions are as follows:

“Within the framework of Space Syntax theory, depth is used to analyze the topological, metric, and angular relationships between spatial units, and it is generally categorized into three types: Step Depth, Metric Depth, and Angular Depth. Step Depth is calculated based on the number of steps along a path and reflects the hierarchical relationships within the overall structure of spatial units; Metric Depth is computed using the geometric length of space and emphasizes the actual physical distance and walking cost in space; Angular Depth is calculated mainly based on changes in turning angles along the path and emphasizes peopl

Attachment

Submitted filename: Response_to_Reviewers_auresp_2.docx

pone.0339994.s007.docx (30.4KB, docx)

Decision Letter 2

Yile Chen

15 Dec 2025

The Influence of Garden Spatial Configuration on Tourist Behavior: A Systematic Review Based on Space Syntax

PONE-D-25-34363R2

Dear Dr. Li,

We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements.

Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication.

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Kind regards,

Yile Chen, Ph.D. in Architecture

Academic Editor

PLOS One

Additional Editor Comments (optional):

Reviewers' comments:

Acceptance letter

Yile Chen

PONE-D-25-34363R2

PLOS One

Dear Dr. Li,

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Associated Data

    This section collects any data citations, data availability statements, or supplementary materials included in this article.

    Supplementary Materials

    S1 Table. Detailed search strategy.

    (PDF)

    pone.0339994.s001.pdf (96.6KB, pdf)
    S2 Table. Crowe Critical Appraisal Tool (CCAT) form.

    (PDF)

    pone.0339994.s002.pdf (108.4KB, pdf)
    S3 Table. PRISMA 2020 checklist.

    (PDF)

    pone.0339994.s003.pdf (113.3KB, pdf)
    S4 Table. Numbered table of all studies.

    (PDF)

    pone.0339994.s004.pdf (714.8KB, pdf)
    Attachment

    Submitted filename: rebuttal letter.doc

    pone.0339994.s005.doc (36KB, doc)
    Attachment

    Submitted filename: Response to Reviewers.docx

    pone.0339994.s006.docx (53.3KB, docx)
    Attachment

    Submitted filename: Response_to_Reviewers_auresp_2.docx

    pone.0339994.s007.docx (30.4KB, docx)

    Data Availability Statement

    All relevant data are within the manuscript and its Supporting information files.


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