Evaluation of Ecological Environment Quality in Chongqing Main City Area Based on Principal Component Analysis

Table 9

Principal component index table of ecological environment.

Indicators	Principal component
	N1	N2	N3
X1	0.114	0.759	0.47
X2	−0.983	0.021	0.01
X3	0.896	−0.304	−0.01
X4	0.871	−0.38	−0.026
X5	0.86	0.252	−0.13
X6	0.699	0.498	−0.054
X7	0.571	0.318	−0.728
X8	0.866	−0.143	0.418
X9	0.931	−0.091	0.206