Table 9 Sediment retention by LULC types
LULC Class | Area | Estimated annual sediment retention | |||
|---|---|---|---|---|---|
ha | % | t year−1 | Contribution to the total sediment retention (%) | t ha−1 year−1 | |
Cultivated | 39,172.80 | 27.5 | 1,939,196.1 | 10.4 | 49.4 |
Agroforestry | 49,188.20 | 34.5 | 6,805,832.3 | 36.5 | 138.2 |
Bare land | 863.6 | 0.6 | 55,938.3 | 0.3 | 62.1 |
Built-up | 5,637.30 | 4.0 | 111,876.7 | 0.6 | 20.1 |
Forest | 5,745.70 | 4.0 | 5,258,204.7 | 28.2 | 915.0 |
Grassland | 8,982.40 | 6.3 | 503,445.1 | 2.7 | 55.6 |
Lake | 9,512.50 | 6.7 | 0 | 0.0 | 0.1 |
Shrubland | 9,667.70 | 6.8 | 1,379,812.6 | 7.4 | 143.0 |
Wetland | 4,376.90 | 3.1 | 0 | 0.0 | 1.1 |
Woodland | 9,513.90 | 6.7 | 2,591,810.1 | 13.9 | 273.2 |
Total | 142,661.00 | 100.0 | 18,646,116.0 | 100 | 130.7 |