Soil Erosion Modeling Using GIS Based RUSEL Model in Gilgel Gibe-1 Catchment, South West Ethiopia

Gizaw Tesfaye and Degifie Tibebe
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Degifie Tibebe: Ethiopian Institute of Agricultural Research, Ethiopia

International Journal of Environmental Sciences & Natural Resources, 2018, vol. 15, issue 5, 141-148

Abstract: This study was aimed to estimate soil loss in Gilgel Gibe-1 catchment by GIS-based RUSLE model and prioritize sub-watersheds for soil conservation planning. Both primary and secondary data from different sources were used in this study. The amount of soil loss from the catchment is estimated with GIS-based RUSLE model which uses the rainfall-runoff erosivity, soil erodibility, topographic effect, soil/surface coverage and land management practice of the catchment as an input. The result of the study shows the mean annual soil loss of the catchment is 62.98 t ha-1year-1 which is about 26.56x106 ton year-1. Erosion ‘hotspot’ areas are identified and prioritized on the bases of soil loss. Accordingly, SW4, SW3, SW5, SW6, SW9, SW8, SW7, SW2, and SW1 got 1 to 9 priority level respectively.

Keywords: earth and environment journals; environment journals; open access environment journals; peer reviewed environmental journals; open access; juniper publishers; ournal of Environmental Sciences; juniper publishers journals; juniper publishers reivew (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:adp:ijesnr:v:15:y:2018:i:5:p:141-148

DOI: 10.19080/IJESNR.2018.15.555923

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