Relationship Between Land Use and Soil Erosion in Manderijan Catchment in Zayandehrud Dam Basin
2005
Sadeghi,Hamid Reza | Shojaee, Gholamreza | Moradi, Hamid Reza
The intensity and type of soil erosion are functions of climatic, topographic, soil and land use characteristics. The role of land use is more than others because of effective role of human. In order to study the relationship between land use change and soil erosion, the Manderijan watershed located in upstream of Zayandehrud dam basin, comprises 23000ha, was selected. The satellite images of MSS1979, TM1990, TM1998 and ETM2002 were applied to map land use as well as soil erosion features during study periods. The relationship between existence as well as areas of each particular soil erosion feature and land use was also investigated using regression and Chi-square analyses. The results of the study verified a significant relationship between areas of land uses and soil erosion features. The moderate sheet erosion was further related to the land use changes in particular in the form of cubic regression equation having the determination coefficient of less than 81% and relative error of below 39.65%. The Chi-square analysis was also verified the insignificant relationship between existences of each particular soil erosion feature and land use whereas the relationship between land use and soil erosion areas could be significantly approved. The results of the study therefore can be utilized for proper management of the area through devoting necessary attention into land uses.
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