TY - JOUR ID - 32028 TI - Application of Gully and Rill Erosion Indicators for Estimating Soil Loss Using GIS Techniques JO - Desert JA - JDESERT LA - en SN - 2008-0875 AU - Nasri, M. AU - Feiznia, S. AU - Jafari, M. AU - Ahmadi, H. AD - Assistant Professor, Islamic Azad University of Ardestan, Ardestan, Iran AD - Professor, University of Tehran, Karaj, Iran AD - Professor, Islamic Azad University, Science and Research Branch, Tehran, Iran Y1 - 2012 PY - 2012 VL - 17 IS - 2 SP - 119 EP - 128 KW - Erosion and sedimentation KW - rill KW - gully KW - GIS KW - Menderjan Watershed KW - GPS-based measurement DO - 10.22059/jdesert.2013.32028 N2 - The problems of land degradation and soil loss are among the major problems of watersheds in Iran. For erosion andsediment estimation one can use statistical and empirical methods. For doing this, land unit map and the map of effectivefactors should be prepared. For erosion and sediment estimation one can use statistical and empirical methods. However,these empirical methods are usually time consuming and do not give accurate estimation of erosion. In this study, weapplied GIS techniques to estimate erosion and sediment of Menderjan Watershed at upstream of Zayandehrud River incentral part of Iran. Erosion features of each land unit were defined on the basis of land use, geology and land unit mapsusing GIS. The UTM coordinates of each erosion type with higher erosion intensities such as rills and gullies wereinserted in GIS using GPS data. The frequency of erosion indicators of each land unit, land use and sediment yield ofthese indices were calculated. Also by using sediment yield changes in watershed outlet (hydrometric station), theeffective parameters in sediment production were identified. The results of this study can be used for more rapid and moreaccurate estimation of erosion than traditional methods. These results can also be used for regional erosion assessment andcan be applied by using remotely- sensed data. UR - https://jdesert.ut.ac.ir/article_32028.html L1 - https://jdesert.ut.ac.ir/article_32028_06117f9b096934c326fc5a7294211d8a.pdf ER -