Risk Assessment of Heavy Metals Pollution in Agricultural Soils of Siling Reservoir Watershed in Zhejiang Province, China

Table 2

Principal component loading of selected metals in the soil samples.

	Summer		Winter
	PC 1	PC 2	PC 1	PC 2	PC 3
Eigen value	3.347	1.696	2.900	1.753	1.103
% total variance	47.819	24.223	41.426	25.038	15.75
% cumulative variance	47.819	72.042	41.426	66.464	82.22
Zn	−0.749	−0.165	−0.728	−0.061	0.441
Cu	−0.757	−0.424	−0.871	0.354	0.114
Mn	−0.619	−0.538	0.121	−0.697	−0.514
Fe	−0.722	0.512	−0.863	0.373	−0.290
Cr	−0.785	0.540	−0.719	−0.142	−0.575
Cd	−0.492	−0.659	−0.348	−0.675	0.465
Pb	−0.671	0.460	−0.462	−0.724	0.043

Italic values are significant at 𝑃=0.05.