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首页> 外文期刊>Journal of Remote Sensing & GIS >Estimation of Soil Erosion Risk in Mubi South Watershed, Adamawa State, Nigeria
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Estimation of Soil Erosion Risk in Mubi South Watershed, Adamawa State, Nigeria

机译：尼日利亚阿达玛瓦州穆比南部流域的土壤侵蚀风险估算

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The study aims to estimation soil erosion risk in Mubi South watershed with the aid of RUSEL model and Geospatial techniques. RUSLE model parameters such as rainfall, soil map, topography map, cover management and conservation practice factor map were derived. The method employed includes the use of RUSLE model and Geospatial techniques using ArcGIS 10.3 Software, for analysis and presentation of result. It was found that sandy soil are the dominant soil of the watershed which covered about 65%, 18% silt and 17% clay. The land use landcover has about 29% of area covered by agricultural activities, 19% were covered by forest and 25% were not cultivated and covered by bare land. The study area has about 0.58 to -0.07 normalized difference vegetation index (NDVI) with majority of the area within the lower topography of 570 m above sea level. The Soil cover management factor ranges from the higher value of 0.5 to the lower value of 0.01 in the watershed, 15.8 mm to 15.7 mm occurrences of daily rainfall and 492.34 mm rainfall and runoff covered when rainfall per-day is greater than 15 mm rainfall. The results of the study also show that average rate of soil detachment is 1 t ha-1 yr-1. The average transport capacity of overland flow is 1.5 t ha-1 yr-1. Average soil per detachability by raindrop is 69.6 t ha-1 yr-1 total soil particle detachments is 69.66 t ha-1 yr-1 and average estimated soil erosion of 3.52 t ha-1 yr-1. It is recommended that other soil erosion model to be applied in the study area for further comparative analysis of soil erosion risk.
机译：这项研究旨在借助RUSEL模型和地理空间技术估算Mubi South流域的土壤侵蚀风险。得出了RUSLE模型参数，如降雨，土壤图，地形图，覆盖管理和保护实践因子图。所采用的方法包括使用RUSLE模型和使用ArcGIS 10.3软件的地理空间技术来分析和显示结果。研究发现，沙质土壤是该流域的主要土壤，覆盖约65％，18％的淤泥和17％的粘土。土地利用土地覆盖区约有29％的土地被农业活动覆盖，19％的土地被森林覆盖，25％的土地未被耕种和被裸地覆盖。研究区域具有约0.58至-0.07的归一化植被指数（NDVI），其中大部分区域位于海拔570 m以下的较低地势内。流域的土壤覆盖管理因子范围从较高的0.5到较低的0.01，每天的降雨量大于15mm时，发生的降雨量为15.8mm至15.7mm，日覆盖量为492.34mm。研究结果还表明，土壤平均脱离速度为1 t ha-1 yr-1。陆上径流的平均运输能力为1.5 t ha-1 yr-1。通过雨滴可分离的平均土壤平均为69.6 t ha-1 yr-1，总土壤颗粒分离量为69.66 t ha-1 yr-1，平均估计土壤侵蚀为3.52 t ha-1 yr-1。建议在研究区域采用其他土壤侵蚀模型，以进一步比较分析土壤侵蚀风险。

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