Affiliation:
1. University of Gabes: Universite de Gabes
2. University of Coimbra Faculty of Arts and Humanities: Universidade de Coimbra Faculdade de Letras
Abstract
Abstract
In semi-arid regions, soil erosion by water presents the major problem that affected the soil degradation. Thus, an adequate management strategy must be applied in order to restore this vital environmental resource. Several methods were used to assess soil erosion based on climatic, geologic and geomorphologic parameters. In this work a modified RUSLE model coupled with GIS and remote sensing technique were used to estimate soil loss in the Oueds El Ghram and Bou-Said basins (south-eastern Tunisia). The results showed that the soil erosion rate in the study basins varied between 0 and 16 t/ ha/yr. The most influencing parameters are slope, lithology, and precipitation. The high to very high affected areas are located in the mountainous parts of the basins and occupied 2.86% of the total surface of the study area. This work can be used as a foundation for a new management strategy that helps to minimize soil degradation and to restore this environmental resource in the study region.
Publisher
Research Square Platform LLC
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