| Land cover types | 1986 | 1990 | 2000 | 2013 | 1986-2013 | Land cover (%) | ||||
| Area | Area | Area | Area | Area changed | 1986 | 1990 | 2000 | 2013 | ||
| (ha) | (ha) | (ha) | (ha) | (ha) | (%) | (%) | (%) | (%) | (%) | |
| Vegetation | 1080 | 2102 | 809 | 4225 | 3145 | 291 | 0 | 1 | 0 | 2 |
| Urban | 10,074 | 11,760 | 17,052 | 27,648 | 17,574 | 174 | 5 | 5 | 8 | 12 |
| Barren Land | 44,008 | 43,628 | 47,409 | 34,603 | −9405 | −21 | 20 | 20 | 21 | 16 |
| Sand | 21,970 | 24,170 | 30,463 | 14,906 | −7064 | −32 | 10 | 11 | 14 | 7 |
| Rocky | 145,261 | 140,733 | 126,660 | 141,011 | −4250 | −3 | 65 | 63 | 57 | 63 |
| Total | 222,393 | 222,393 | 222,393 | 222,393 | 100 | 100 | 100 | 100 | ||