Research Article
Assessing Sediment-Nutrient Export Rate and Soil Degradation in Mai-Negus Catchment, Northern Ethiopia
Table 3
Nutrient export rate associated with sediment yield across the landforms in Mai-Negus catchment, northern Ethiopia.
| | Landform | Rate of nutrient export (kg ha−1 y−1) | | K | Ca | Mg | OC | TN | Pav |
| | Rolling hills | 1.36e | 35.43e | 1.21d | 23.76e | 4.23d | 0.032de | | Mountainous area | 3.81b | 126.8c | 2.91b | 86.49b | 10.36b | 0.087c | | Central ridge | 3.73b | 115.7c | 2.82b | 57.73c | 8.66bc | 0.096b | | Valley | 3.91b | 135.9b | 2.98b | 98.11b | 11.56b | 0.102b | | Plateau | 1.52d | 25.87e | 0.79e | 29.39e | 3.92d | 0.022e | | Escarpment | 1.97c | 57.27d | 2.2c | 42.37d | 7.11c | 0.041d | | Reservoir | 6.14a | 166.8a | 4.79a | 135.7a | 17.74a | 0.135a |
| | Average | 3.21 | 94.8 | 2.53 | 67.6 | 9.08 | 0.074 |
| | Standard deviation | 1.71 | 54.8 | 1.32 | 40.9 | 4.78 | 0.042 |
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K: potassium; Ca: calcium; Mg: magnesium; OC: organic carbon; TN: total nitrogen; Pav: available phosphorus.
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