Prediction of soil water erosion risk within GIS-case study of Beni Amrane Dam catchment (North of Algeria)

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Touahir, S.^1 ; Khenter, K.^2 ; Remini, B.^3 ; Saad, H.^1

Hydraulic Department, Civil Engineering and Hydraulics Faculty, Hassiba Benbouali University of Chlef, Chlef

02000, Algeria^1

National High School for Hydraulics of Blida, Blida

09000, Algeria^2

Department of Water and Environmental Sciences, Faculty of Technology, University of Blida 1, Blida

09000, Algeria^3

关键词: Data mappings;    Guidance document;    Rainfall erosivity;    Reservoir siltations;    Soil erodibility;    Soil erosion;    Soil water;    Water erosion;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012011/pdf
DOI  :  10.1088/1755-1315/82/1/012011

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Isser River is one of North Algeria's major resources. It is vulnerable to water soil erosion because of favourable conjunctions of different geomorphological, hydro-climatic and lithologic factors. This case study has been carried out on the Beni Amrane dam Catchment, which is located in the bottom of Isser River, in North Algeria. The study involves a mapping of main factors of water erosion: rainfall erosivity, soil erodibility, slope and land use. Essentially a data mapping specification analysis shows, on each factor, how to identify the areas that are prone to water erosion. 04 classes of multifactorial vulnerability to water erosion have been identified: areas with low vulnerability (10 per cent); area with middle vulnerability (49 per cent); areas with high and very high vulnerability (38 per cent and 3 per cent). This could be a first guidance document for a rational use of land in the region and better secure the Beni Amrane dam against reservoir siltation.