Table 6 Landscape index of forest land in the study area from 1980 to 2020.

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

Year

Landscape index

NP

PD/(No.·km2)

Cohesion/%

LSI

Division/%

Split/%

AI/%

1980

5814

0.1271

99.9744

191.8400

72.96

3.6985

97.3230

1990

5825

0.1275

99.9727

192.5574

75.11

4.0182

97.3110

2000

5779

0.1271

99.9731

193.9524

75.22

4.0351

97.2850

2010

5658

0.1232

99.9776

196.9593

71.73

3.5376

97.2566

2020

5684

0.1239

99.9720

198.4960

77.31

4.4073

97.2332

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