| Ecosystem types | Year2000 | Year 2010 | Year 2020 | |||
| Area/hm2 | Ratio/% | Area/hm2 | Ratio/% | Area/hm2 | Ratio/% | |
| Forest | 10892.74 | 35.49 | 15571.90 | 50.73 | 13937.54 | 45.41 |
| Grassland | 3983.38 | 12.98 | 1633.18 | 5.32 | 1240.14 | 4.04 |
| Farmland | 13308.29 | 43.36 | 8087.76 | 26.35 | 6342.33 | 20.66 |
| Wetland | 1363.77 | 4.44 | 1298.64 | 4.23 | 1630.70 | 5.31 |
| Artificial surface | 1146.82 | 3.74 | 4103.52 | 13.37 | 7544.29 | 24.58 |
| Total | 30695.00 | 100.00 | 30695.00 | 100.00 | 30695.00 | 100.00 |