Table 4 Transfer of forest land in the study area from 1980 to 2020 /km2.

From: Spatio-temporal distribution characteristics and driving factors of forest land in the Da-Xiao Liangshan mountains based on topographic gradient

Year

Transfer mode

Transfer area

Cropland

Grassland

Water area

Built-up land

Unused land

Total

1980–1990

Transfer out

9.41

121.94

0.01

0.06

0.47

131.89

Transfer in

15.46

51.66

0.01

0.01

0.00

67.14

1990–2000

Transfer out

34.36

287.31

0.76

1.21

0.41

324.05

Transfer in

44.28

61.95

0.25

0.42

0.13

107.03

2000–2010

Transfer out

170.07

304.13

5.08

12.55

0.96

492.79

Transfer in

230.55

729.36

1.62

0.48

0.09

962.10

2010–2020

Transfer out

1228.64

1463.68

64.08

23.87

1.73

2782.00

Transfer in

1206.07

1493.37

7.35

6.92

2.30

2716.01

1980–2020

Transfer out

1294.37

1875.15

69.00

33.69

2.68

3274.89

Transfer in

1360.97

2022.62

6.72

4.45

1.74

3396.50

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