Table 3.

Characteristics of included studies.

Author/Year	Population	Intervention	Treatment Goals	Study Design
[27] Annerstedt & Währborg, 2011	Youth and adults	Nature-based therapy	Addressing states of ill health, mental disorders, substance abuse or addiction, dementia, and varied physical disorders	Systematic review
[28] Bettmann et al., 2016	Youth	Wilderness therapy	Addressing substance abuse or addiction, mental health and behavioral issues	Meta-analysis
[18] Bowen & Neill, 2013	Youth and adults	Adventure therapy	Addressing substance abuse or addiction, mental health issues, behavioral and interpersonal problems	Meta-analysis
[29] Britton et al., 2020	Youth and adults	Nature-based therapy (blue space)	Improving psychological, social and/or physical wellbeing	Systematic review
[30] Corazon et al., 2019	Adults	Nature-based therapy	Seeking stress recovery	Systematic review
[31] Djernis et al., 2019	Youth and adults	Nature-based therapy (mindfulness)	Improving psychological, physiological and/or interpersonal outcomes	Systematic review & meta-analysis
[32] Gillis et al., 2016	Youth	Wilderness therapy	Addressing substance abuse or addiction, mental health and behavioral issues	Meta-analysis
[33] Kamioka et al., 2014	Youth and adults	Horticultural therapy	Addressing mental and physical disorders	Systematic review
[34] Kotera et al., 2020	Youth and adults	Forest (and nature-based) therapy	Addressing depression, anxiety, stress and anger	Systematic review & meta-analysis
[35] Lee et al., 2017	Adults	Forest therapy	Addressing depression	Systematic review
[36] Mygind et al., 2019	Children and youth	Nature-based therapy	Addressing mental, physical and social health	Systematic review
[37] Nicholas et al., 2019	Older adults (60+)	Horticultural therapy	Addressing physical and cognitive decline	Systematic review
[38] Wen et al., 2019	Open	Forest therapy	Addressing health effects	Systematic review
[39] Zhao et al., 2020	Adults	Horticultural therapy	Addressing dementia	Systematic review