| Category | θSlope range | Mean NDVI | |
Area Km² | % of total area | |||
1 | Significant degradation | θ < −0.035 | 12705.7 | 0.5 |
2 | Moderate degradation | −0.035 < θ > −0.025 | 28343.4 | 1.1 |
3 | Mild degradation | −0.025 < θ > −0.015 | 94550.6 | 3.8 |
4 | No change | −0.015 < θ > 0.015 | 2118701.5 | 84.7 |
5 | Mild improvement | 0.015 < θ > 0.025 | 150225.9 | 6.0 |
6 | Moderate improvement | 0.025 < θ > 0.035 | 73997.4 | 3.0 |
7 | Significant improvement | θ > 0.03 | 22485.4 | 0.9 |
| Total | 2501010 | 100 |