| Category | 1987 Area (Ha) | 1997 Area (Ha) | 2007 Area (Ha) | 2017 Area (Ha) |
| Forest | 12,357 (7.0%) | 15,138 (8.6%) | 7673 (4.4%) | 4939 (2.8%) |
| Grassland | 92,493 (52.8%) | 82,989 (47.2%) | 85,005 (48.4%) | 62,708 (35.7%) |
| Shrub Land | 62,757 (35.8%) | 74,286 (42.2%) | 79,786 (45.4%) | 98,079 (55.9%) |
| Cropland | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 5607 (3.2%) |
| Bare Land | 7723 (4.4%) | 3472 (2.0%) | 3166 (1.8%) | 4244 (2.4%) |