The downslope sediment-fixed nutrients flow causes in-situ soil nutrient depletion. We assessed nutrient movement through water erosion from different land use types and landscape positions. Using a nested hierarchical approach, runoff samples were collected from first-order stream outlets of an 18 km2 micro-watershed (Maileba, Figure 1) in northern Ethiopia. Micro-watershed here refers to a watershed with an area covering less than 25 km2 and whose rivers or streams are draining towards one outlet.The analytical results indicated that the micro-watershed had a total soil loss rate of about 3820 t yr"1 of which about 1299 t yr"1 was estimated to be a sediment export rate out of the watershed, the remaining 2521 t yr"1 estimated to be deposition (Table 1).
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机译：下滑沉积物固定营养物流引起原位土壤养分耗尽。我们通过不同土地使用类型和景观位置的水腐蚀评估了营养运动。使用嵌套的分层方法，从埃塞俄比亚北部的18 km2微流域（MaileBa，图1）的一阶流插座收集径流样本。这里的微流域是指地面积覆盖小于25 km 2的水域，其河流或溪流朝向一个出口排出。分析结果表明，微流域的总土壤损失率为约3820 t yr“1估计约1299吨“1估计是流域的沉积物出口速率，剩余的2521吨”1估计为沉积（表1）。
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