Table 1 Land use structure and their changes during 1986-2000 in the Jing River catchment
Land use | 1986 | 2000 | Unchanged area | Changed area | Converted to other types | Converted from other types | Change speed | ||
|---|---|---|---|---|---|---|---|---|---|
| Â | (km2) | (%) | (km2) | (%) | (km2) | (km2) | (km2) | (km2) | (%) |
Farmland | 20360.6 | 44.83 | 20275.5 | 44.64 | 20209.6 | -85.1 | 151.0 | 66.0 | -0.03 |
Forest | 4313.6 | 9.50 | 4189.8 | 9.22 | 4129.0 | -123.8 | 184.6 | 60.8 | -0.19 |
Grassland | 19843.8 | 43.69 | 19962.6 | 43.95 | 19759.7 | 118.8 | 84.1 | 202.9 | 0.04 |
Water | 205.1 | 0.45 | 201.3 | 0.44 | 199.7 | -3.8 | 5.4 | 1.6 | -0.12 |
Construction land | 695.4 | 1.53 | 790.6 | 1.74 | 695.4 | 95.2 | 0.0 | 95.2 | 0.91 |
Unused land | 2.4 | 0.01 | 1.0 | 0.002 | 1.0 | -1.4 | 1.4 | 0.0 | -3.84 |