| Land cover/use type | 1990 | 2000 | 2010 | 2020 | ||||
| UA | PA | UA | PA | UA | PA | UA | PA | |
| Forest | 98.24 | 93.08 | 99.44 | 93.37 | 96.41 | 89.44 | 91.67 | 95.65 |
| Bare-ground | 68.42 | 61.90 | 56.52 | 58.43 | 91.86 | 98.91 | 72.00 | 67.00 |
| Urban | 85.48 | 56.99 | 61.54 | 99.80 | 91.89 | 75.14 | 87.76 | 93.48 |
| Grassland | 90.01 | 97.45 | 72.26 | 88.75 | 60.00 | 75.00 | 61.90 | 65.00 |
| OA | 92.16 | 90.77 | 92.00 | 80.67 | ||||
| Kappa | 0.8564 | 0.7761 | 0.8559 | 0.7313 | ||||