Driving forest succession in karst areas of Chongqing municipality over the past decade

Forest Ecosystems

Table 4 Driving factors associated with rocky desertification in artificial karst forest areas

Category	Independent variable	Correlation coefficients	Contribution (%)
Climatic variables	Precipitation	0.42^a	22.13
Climatic variables	Temperature	0.011	4.22
Topography and soil	Altitude	0.104^a	3.72
	Slope	0.012^b	2.51
	Soil thickness	0.472	24.42
	Soil moisture content	0.102^b	12.15
Socioeconomic variables	Population	0.207	5.23
	GDP	0.001	8.21
	Traffic density	0.107	10.3
	Construction area	0.112	7.11

Notes: Standardized coefficients are reported as above. Parameters with relative contribution were identified by multiple regressions. ^aP < 0.01, ^bP < 0.05