USLE和GIS综合方法估算土壤侵蚀率热点——以摩洛哥东北部Ghiss大坝和盆地为例

Q3 Social Sciences

Geomatics and Environmental Engineering Pub Date : 2022-02-20 DOI:10.7494/geom.2022.16.2.95

M. Taher, Touafik Mourabit, Abdelhak Bourjila, Omar Saadi, Ali Errahmouni, Fouad El Marzkioui, Mhamed El Mousaoui

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引用次数: 4

摘要

土壤侵蚀是导致大坝淤积和库容降低的主要因素。为预测摩洛哥东北部Ghiss流域/大坝的土壤侵蚀/淤积，绘制了土壤侵蚀热点分布区。在此背景下，通过整合通用土壤流失方程(USLE)，在地理信息系统中准备了估算土壤侵蚀的各种数据。研究结果表明，土壤流失率在0 ~ 19 t∙ha−1∙yr−1之间。因此，水土流失区域的热点在上游，随着时间的推移，可能导致大坝淤积。为避免吉斯坝淤积，建议在水土流失热点地区梯田耕作和造林。

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An Estimation of Soil Erosion Rate Hot Spots by Integrated USLE and GIS Methods: a Case Study of the Ghiss Dam and Basin in Northeastern Morocco

Soil erosion is a major factor leading to dams’ siltation and reducing their storage capacity. This study mapped the hot spots of soil erosion areas to predict the soil erosion/siltation in the Ghiss basin/dam (northeastern Morocco). In this context, various data has been prepared in the geographical information system for the estimation of soil erosion by integrating the universal soil loss equation (USLE). The result of this study revealed that soil loss rate ranges between0 and 19 t∙ha−1∙yr−1. Therefore, the hot spots in the soil erosion area are to be found upstream, potentially leading to dam siltation over time. To avoid Ghiss dam siltation, we suggest terrace farming and reforestation in the soil erosion area hot spots.

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来源期刊

Geomatics and Environmental Engineering Earth and Planetary Sciences-Computers in Earth Sciences

CiteScore

2.30

自引率

0.00%

发文量