Table 5 Variation of annual soil erosion rates with slope classes
Slope class (%) | Area | Estimated annual soil loss | |||
|---|---|---|---|---|---|
|  | ha | % | t year−1 | Contribution to the total soil loss (%) | t ha−1 year−1 |
0–5 | 77,187.8 | 54.1 | 816,977.2 | 15.5 | 10.6 |
5–15 | 41,819.1 | 29.3 | 2,025,774.5 | 38.4 | 48.4 |
15–30 | 17,147.2 | 12.01 | 1,551,541.5 | 29.4 | 90.5 |
30–50 | 5,590.6 | 3.9 | 696,352.8 | 13.2 | 124.6 |
> 50 | 916.3 | 0.6 | 184,554.8 | 3.5 | 201.4 |
Total | 142,661.0 | 100.0 | 5,275,200.9 | 100.0 | 37.0 |