@article{Ali Hussein Jaber Al Rammahi_Saleh Issa Khassaf_2018, title={ESTIMATION OF SOIL ERODIBILITY FACTOR IN RUSLE EQUATION FOR EUPHRATES RIVER WATERSHED USING GIS}, volume={14}, url={https://geomatejournal.com/geomate/article/view/2894}, abstractNote={<p>Universal Soil Loss Equation (USLE) and Revised Universal Soil Loss Equation (RUSLE) are<br>the models to compute the soil erosion loss, to estimate the accurate value of soil erosion that must be predicted<br>several factors of its model. The land cover surface of topsoil is the important effect on the estimation of soil<br>erosion loss. In this paper, the Euphrates watershed river of Iraq country will be adopted. This watershed<br>includes seven provinces Najaf, Karbala, Al-Qadisiyyah, Dhi Qar, Al Muthanna, Babylon and Basrah of Iraq.<br>The objective of present study was estimated the erodibility factor K for the watershed area. The K factor map<br>was derived from the database of the UN-FAO (Food and Agriculture Organization of the United Nations<br>2007). This map of erodibility factor was prepared by ArcMap 10.2 software. It was estimated that K factor<br>values of this watershed of study area range from 0.02276 to 0.00928. The K factor is depended on the<br>percentage of topsoil content as sand, silt, clay and organic carbon. The large value of K factor for the topsoil<br>type is Jc symbol (39% sand, 40% silt and 21% clay), while the soil erodibility factor is low for Qa-topsoil<br>kind (92% sand, 3% silt, 4% clay and 1% organic carbon) because the silt of topsoil content is low compared<br>with different other kinds. The big area of topsoil watershed type is Yk-type (63% sand, 18% silt, and 19%<br>clay), it has been occupied about 47.2% of the whole watershed area.<br><br></p>}, number={46}, journal={GEOMATE Journal}, author={Ali Hussein Jaber Al Rammahi and Saleh Issa Khassaf}, year={2018}, month={Feb.}, pages={164–169} }