Table 5. The estimated results of Land cover area according to sampling intensity.
| Sampling intensity | The number of sample point (ratio:%) |
| Forest land | Cropland | Grassland | Wetlands | Settlements | Total |
| S1 | 49 (72.1) | 6 (8.8) | 3 (4.4) | 7 (10.3) | 3 (4.4) | 68 (100) |
| S2 | 104 (75.9) | 7 (5.1) | 14 (10.2) | 8 (5.8) | 4 (2.9) | 137 (100) |
| S3 | 205 (75.1) | 18 (6.6) | 24 (8.8) | 16 (5.9) | 10 (3.7) | 273 (100) |
| S4 | 416 (74.7) | 34 (6.1) | 42 (7.5) | 36 (6.5) | 29 (5.2) | 557 (100) |
| S5 | 813 (73.6) | 64 (5.8) | 103 (9.3) | 58 (5.2) | 67 (6.1) | 1,105 (100) |
| S6 | 3,340 (74.8) | 259 (5.8) | 352 (7.9) | 260 (5.8) | 257 (5.8) | 4,468 (100) |
| S7 | 13,029 (74.6) | 1,051 (6.0) | 1,415 (8.1) | 974 (5.6) | 1,005 (5.8) | 17,474 (100) |