Table 9 Annual soil erosion risk classes and area coverage under land use/land cover map of 198,2002, 2017, and 2033 in Muga watershed
Soil erosion intensity class and rate of soil loss | Study period | |||||||
|---|---|---|---|---|---|---|---|---|
1985 | 2002 | 2017 | 2033 | |||||
Area (ha) | % | Area (ha) | % | Area (ha) | % | Area (ha) | % | |
Low (0–5 t ha−1 year−1) | 19,138.9 | 45.0 | 18,343.9 | 43.2 | 17,679.0 | 41.6 | 17,412.5 | 41.0 |
Moderate (5–20 t ha−1 year−1) | 12,717.4 | 29.0 | 12,217.4 | 28.7 | 12,618.5 | 29.7 | 12,205.5 | 28.7 |
High (20–50 t ha−1 year−1) | 6700.4 | 15.8 | 7051.3 | 16.6 | 6977.5 | 16.4 | 7437.1 | 17.5 |
Very high (50–100 t ha−1 year−1) | 3148.6 | 7.4 | 3737.8 | 8.8 | 3972.3 | 9.3 | 4250.3 | 10.0 |
Severe (100–150 t ha−1 year−1) | 529.5 | 1.2 | 814.5 | 1.9 | 834.9 | 2.0 | 783.6 | 1.8 |
Very severe (> 150 t ha−1 year−1) | 260.5 | 0.6 | 330.5 | 0.8 | 413.2 | 1.0 | 406.4 | 1.0 |