Writers : Bagherzadeh,Ali; Mansouri Daneshvar, Mohammad Reza
Refference : The first international applied geological congress; Department of geology Islamic azad university- Mashhad
Publishing Year : 2010

Abstract :

The study of geological factors in sub-basins to evaluate the sensitivity of formations to erosion is considered as one of the most important factors in calculating soil erosion and sediment rates. The npresent study aims to evaluate sediment yield at each sub-basin of the Kardeh watershed and prepare the maps of sediment production after EPM and PSIAC models by GIS analysis which can be applied in the rehabilitation plans at the study area. According to our results the study area can be categorized into three erosive zones: heavy, moderate and slight. The middle and south part of the watershed near the dam is highly eroded due to its geology and soil erodibility while the northern parts are moderately eroded because of the intensity of land cover. Comparing the output maps from EPM and PSIAC models showed that the results of sediment production in most areas correspond well with each other and with field observations. The results indicated high correlation coefficient (R2=0.945) between total sediment production derived from the EPM model, and the corresponding values of PSIAC model at each sub-basin of the study area.

Subject List : GIS application