| Land use types | 1990 | 2005 | 2012 |
| Tea fields | 4.08 | 3.28 | 4.57 |
| Residential area | 2.75 | 3.11 | 3.26 |
| Paddy fields | 36.48 | 35.82 | 33.61 |
| Woodland | 85.18 | 87.98 | 88.59 |
| Lakes | 4.74 | 3.17 | 3.32 |