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One of the problems that geomorphologists, hydrologists and the other natural scienses that are related are faced, is estimate rate of sediment in water systems, which It can increase amount of damage to hydraulic structures such as dams import. The purpose of this study compared the two models, Corine and SLEMSA in Tang - Sorkh basin of Shiraz. that is, study effective The rate of erosion and effective factors in this area. In this research , to compare and evaluate the two models studied at first, maps and values of main parameters of SLEMSA model includes topographical data (topographic map and slope map), Eroding (mteorical data) and Erosion of Soil (geological map) and Vegetation ( land use map ) were gathered and the rate of erosion, erosion center and the most important factor in this model using ARC MAP software ( raster calculator function) and then after calculating main parameters of corine model such as slope, erodibility( depth & texture of soil and stoniness), erosivity (Fournier & aridity index) and vegetation map of study area was classified. Comparing two models shows that corine model offers more details and is more accurate and the slope factor is the most important factor in increasing the rate of erosion in the watershed.

Keywords: geomorphology, Soil erosion, SLEMSA model, Corine model, tang sorkh shiraz

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