Table 5.

Variance Inflation Factors of each multiple regression of the number of total species (ToS), spontaneous species (SpS), cultivated species (CS), tree (TrS) species, shrub species (ShS), and herb species (HS) with urban green space (UGS), built-up area (Bui), construction age (CA), housing price (HP), population density (PD), maintenance times (MT), fertilizing times (MT), and watering frequency (WT).

Different factors	ToS	SpS	CS	TrS	ShS	HS
UGS	1.956	1.956	1.956	1.956	1.956	1.956
Bui	2.122	2.122	2.122	2.122	2.122	2.122
CA	1.306	1.306	1.306	1.306	1.306	1.306
HP	1.073	1.073	1.073	1.073	1.073	1.073
PD	1.180	1.180	1.180	1.180	1.180	1.180
MT	2.400	2.400	2.400	2.400	2.400	2.400
FT	2.252	2.252	2.252	2.252	2.252	2.252
WT	1.964	1.964	1.964	1.964	1.964	1.964