Table 2 Environmental variables and contribution degree after removing spatial correlation.

From: Suitability prediction of potential arable land in southeast coastal area of China

Variable

Percent contribution

Permutation importance

Ele

43.3

22.4

BIO2

22.2

29.4

Clay

9

0.2

Gravel

7

6.9

BIO12

5.7

22.6

Silt

4.4

1.8

Dist-Water

3.5

1.6

CEC

1.7

4.2

Caco3

1.4

2.6

BIO3

0.8

7.1

BIO15

0.4

0.5

BIO14

0.3

0.1

BIO4

0.3

0.5