文章基本信息

标题：Évaluation par analyse multicritères de la vulnérabilité des sols à l'érosion : cas du bassin versant de l'Isser – Tlemcen – Algérie
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作者：M. BOUGHALEM ; M. MAZOUR ; F. GRECU 等
期刊名称：Annals of the University of Bucharest : Geography Series
印刷版ISSN：1013-4115
电子版ISSN：2247-238X
出版年度：2013
出版社：University of Bucharest
摘要：The drainage basin of Isser, space weakened by the periods of drought and characterized by exposures of marls and very fragile clays, presents a high sensitivity to erosion. In addition to the deterioration of the quality of water, the erosion phenomenon in this zone presents risks of depletion of topsoil, loss of fertility, loosening of plants and pollution by pesticides dissolved in surface water runoff. The erosion results from the conjunction of many permanent factors (as those related to the soil or to the topography), that are evolving or presenting a random character (such as precipitations) and intervene at different levels in erosion processes. The purpose of the work is to produce a map of soil vulnerability to the erosion by integrating field data, different thematic maps and satellite images through GIS solution. This map should be a basis for the development of the anti-erosive land use plan adapted to the specific context of the drainage basin of Isser. We do integrate four factors which determine the erosion: precipitations, topography, lithology, and vegetation cover. For combining these different factors, we use a cutting space in regular meshes. The resulting map of the vulnerability to the erosion should reveal homogeneous areas for priority interventions
关键词：Isser; Algeria; erosion; soil vulnerability; grid analysis