Appréciation des Risques et Potentielle d’érosion Hydrique dans la Région de Naama

Abstract

In this study we tray to develop a methodology using remote sensing and geographical information systems (GIS) to map zones presenting risks of water erosion in the Watershed Ain Sefra ,region of NAAMA. And to produce a risk map that can be used as a reference document of decision-making support for planners. The methodology presented consists in integrating into a GIS, the factors that control erosion: soil erodability, rain full erosivity, slope, and vegetation land cover. The derived erosion risk map shows three areas of vulnerability to water erosion: weak, medium,and high. This methodology presented in this study can generated for the whole of the region, where we can find other phenomenon risk of degradation.