| Land use | Water | Green land | Farmland | Urban built-up land | Bare land | Total |
---|---|---|---|---|---|---|---|
 |  | 1990 |  | ||||
2000 | Water | 38 | 87 | 88 | 7 | 0 | 220 |
Green land | 43 | 1777 | 474 | 27 | 1 | 2322 | |
Farmland | 96 | 815 | 5694 | 10 | 0 | 6615 | |
Urban built-up land | 15 | 29 | 128 | 117 | 0 | 289 | |
Bare land | 0 | 2 | 1 | 0 | 0 | 3 | |
Total | 193 | 2709 | 6385 | 161 | 1 | 9449 | |
 |  | 2000 |  | ||||
2010 | Water | 190 | 43 | 47 | 2 | 0 | 281 |
Green land | 9 | 2022 | 157 | 9 | 1 | 2198 | |
Farmland | 19 | 245 | 6365 | 9 | 1 | 6640 | |
Urban built-up land | 2 | 11 | 47 | 270 | 0 | 329 | |
Bare land | 0 | 0 | 0 | 0 | 0 | 1 | |
Total | 220 | 2321 | 6615 | 289 | 3 | 9449 | |
 |  | 2010 |  | ||||
2020 | Water | 153 | 12 | 195 | 3 | 0.0 | 363 |
Green land | 54 | 1518 | 168 | 14 | 0.4 | 1745 | |
Farmland | 69 | 556 | 5949 | 18 | 0.2 | 6592 | |
Urban built-up land | 5 | 112 | 328 | 294 | 0.0 | 739 | |
Bare land | 0 | 0 | 0.2 | 0 | 0.2 | 0 | |
Total | 281 | 2198 | 6640 | 329 | 1 | 9449 |