Table 5 Characteristic value and contribution rates of each principal component.

From: Land use changes and its driving forces in hilly ecological restoration area based on gis and rs of northern china

Principal components

Driving forcefactors

Characteristic value

Contribution rate (%)

Cumulative contribution rate (%)

Y1

X1*

7.112

79.017

79.017

Y2

X2

0.544

6.047

85.064

Y3

X3

0.462

5.137

90.201

Y4

X4

0.423

4.697

94.899

Y5

X5

0.201

2.229

97.128

Y6

X6

0.120

1.331

98.459

Y7

X7

0.082

0.911

99.370

Y8

X8

0.030

0.339

99.709

Y9

X9

0.026

0.291

100.000

  1. *X1 annual precipitation, X2 terrain slop, X3 population density, X4 land reclamation rate, X5 per capita cultivated land area, X6 per capita forest and grass area, X7 per capita amount of stock raising, X8 per capita agricultural output value, X9 per capita grain output.
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