Soil erosion is a major environmental problem that threatens world food production; it can be described as the removal of organic as well as inorganic soil surface materials by wind and water. This (e present) study aims to identify the most erosion vulnerable sub-watersheds for planning appropriate conservation intervention and restoration measures in Jedeb watershed. Revised Universal Soil Loss Equation (RUSLE) integrated with satellite remote sensing (RS) and geographical information system (GIS) has been applied to calculate potential soil loss at sub-watershed level. The parameters of RUSLE model were estimated using remote sensing data and ArcGIS software. The rainfall erosivity R-factor was found from 3209.6 to 3896.69 MJ.mm/ (ha.h), soil erodibility K-factor varies from 0.1 to 0.25 t ha h/ (ha MJ mm), Topographic (LS factor) ranging from 0.19 to 6.7, C-factor varies 0.01 to 0.25 and support practice P-factors from 0.1 to 1. The total annual soil loss potential of the study area was found 1,383,158 t/ yr from the total watershed area of 29,633 ha. Average annual soil loss at sub-watersheds level was estimated from 29.275 to72.529 t/ha/year and mean annual soil loss of the entire watershed was 46t/ha/year. The study results indicated that potential soil erosion rate in the watershed was ranged into four priority categories from high to extremely severe. Three sub-watersheds covering 22.975% of the watershed shows very severe mean soil loss rate, two sub-watersheds was found severe mean soil rate which covered 19.014%, eight sub-watershed were existed under very high mean soil loss rate covers 47.59% and Three sub-watersheds were found in the high soil loss rate and covers 10.42%. Sever and extremely severe micro watersheds demand immediate attention in terms of management and planning perspective. Soil and water conservation structure was recommended and designed based on peak runoff rate, soil type, slope of the land, land use type and soil erosion hazard .
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机译：土壤侵蚀是威胁世界粮食生产的主要环境问题;它可以被描述为通过风和水除去有机和无机土壤表面材料。这项（expeed）研究旨在确定最侵蚀的弱势群体，用于规划jedeb流域的适当保护干预和恢复措施。已经应用了与卫星遥感（RS）和地理信息系统（GIS）集成的通用土壤损失方程（限制）以计算潜水水平的潜在土壤损失。使用遥感数据和ArcGIS软件估计风险模型的参数。从3209.6到3896.69 mJ.mm/（ha.h）中发现了降雨侵蚀性R型，土壤腐蚀性K因子从0.1到0.25 t h /（ha mm mm），地形（ls因子）范围为0.19至6.7，C因子各不等于0.01至0.25，支持实践从0.1到1的实践p污染。研究区的年度土壤损失潜力总量为1,383,158吨/年，从流域面积为29,633公顷。次流域水平的平均年平均土壤损失估计为29.275〜72.529吨/公顷/年，平均整个流域的土壤丧失为46t / ha /年。该研究结果表明，流域的潜在土壤侵蚀率分为四个优先类，从高于极度严重。三个分水岭覆盖22.975％的流域显示出非常严重的平均土壤损失率，两次分水岭被发现严重平均土壤率，涵盖了19.014％的土壤率，八个次流域在非常高的平均土壤损失率下占47.59％和在高土壤损失率上发现了三个次流域，占地10.42％。切断和极其严重的微水流域要求立即关注管理和规划的角度。建议采用水土保持结构，基于峰值径流率，土壤类型，土地坡，土地利用型和土壤侵蚀危害设计。
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