Estimating the amount of erosion and runoff in Zimkan watershed in Kermanshah province with emphasis on influencing variables.

Articles in Press

Document Type : Research Article

Authors

• Shahranm Roostaei ¹
• Asadolah Hejazi ²
• Hedyeh Shirzadi ³

¹ prof.

² Tabriz University

³ Ph.D. student of Geomorphology, Tabriz University, Iran

10.22067/geoeh.2023.79388.1293

Abstract

Soil erosion is one of the most important problems that has affected human life in recent years. The type and intensity of soil erosion in a region depends on climatic conditions, altitude, soil and land use. In the meantime, the importance of land use is greater than other factors due to the effective role of humans on it. In this research, in order to estimate the amount of erosion and sedimentation in the Zimkan watershed, by using two methods, MPSIAC and EPM, each of which, respectively, nine factors (geology, soil, climate, water flow, elevation, vegetation, land use) They evaluate the land, the current state of erosion and river erosion) and four factors (erosion, land use, soil sensitivity and the average slope of the basin). And then ArcGIS software and Sentinel 2 satellite sensor images were used in ENVI 5.3 environment to prepare related layers. The results showed that the erosion values in MPSIAC and EPM models were 5142.9 and 6401.2 tons per year, respectively, and the amount of sediment was 2461.2461 and 3624.72 tons per year, respectively, and the class and severity of the basin's erodibility in terms of soil wastage. It is in critical condition.The highest intensity of erosion and sediment production was observed in the outlet sections of the basin. It is necessary to apply management and protection policies at the field level. And it was also found that the results of the MPSIAC method are closer to the actual observations in the basin than the EPM method.

Keywords

• Zimkan basin
• model
• EPM
• MPSIAC
• erosion and sedimentation

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