| Land cove | 1990 | 2002 | 2020 | |||
| Area (ha) | % | Area (ha) | % | Area (ha) | % | |
| Urban Area | 17,809 | 2.02 | 25,502 | 2.89 | 38,257 | 4.34 |
| Green Area | 33,093 | 3.75 | 27,146 | 3.08 | 18,539 | 2.10 |
| Space Area | 831,420 | 94.23 | 829,710 | 94.03 | 825,520 | 93.56 |
| Total |
| 100% |
| 100% |
| 100% |