| LC classes | Park (% Area) | Buffer zone (%Area) | ||||||||||
| 1986 | 1990 | 1995 | 2000 | 2010 | 2015 | 1986 | 1990 | 1995 | 2000 | 2010 | 2015 | |
| 1 | 78.1 | 76.0 | 73.3 | 76.4 | 77.0 | 63.8 | 5.1 | 4.0 | 2.9 | 7.2 | 6.0 | 2.3 |
| 2 | 13.0 | 6.7 | 13.6 | 8.9 | 13.8 | 18.7 | 22.6 | 20.6 | 19.6 | 2.6 | 7.5 | 3.2 |
| 3 | 1.5 | 16.0 | 11.6 | 13.5 | 7.9 | 16.4 | 71.7 | 74.8 | 77.0 | 89.7 | 84.7 | 93.1 |
| 4 | 1.3 | 1.3 | 1.4 | 1.1 | 1.2 | 1.0 | 0.6 | 0.6 | 0.4 | 0.5 | 1.8 | 1.3 |
| 5 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |