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Application of GIS technology in zoning and estimation of soil erosion and sediment production in Aji Chay watershed
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Abolfazl Rahmani *   1, Abolghasem AmiraAhmadi , Ali M.KH.Doust |
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Abstract: (2623 Views) |
| The growing population and the excessive and unconditional use of natural resources, especially in the soil, have caused many problems, most notably due to soil erosion and sediment production. To do this research, homogeneous unit maps were prepared using slope mapping, land use and geology maps. Each of the effective factors in erosion and parameters in the models were measured separately in each unit of operation, and finally, for each sub-area, the erosion and annual sediment production were calculated. Land use map was prepared using Landsat satellite ETM sensor images after classifying. Based on the results of this study, annual production sediment yield by MPSIAC method in the sub-basin of Unit A of the studied basin was 126.33 cubic meters per square kilometer, 6106 tons per hectare, in unit B sub-basin, respectively 74 cubic meters per cubic meter Kilometers square 167, 1804 t / ha and sub unit C were 150.36 m 3 / km, 9659 t / ha, respectively. The results of the comparison of erosion rates in determining the accuracy of the methods showed that the MPSIAC method is more suitable for estimating erosion and annual precipitation production in the natural and climatic conditions of the studied basin than the other two methods. |
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| Keywords: Soil Erosion, Aji Chai, MPSIAC Model, GIS. |
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Full-Text [PDF 1220 kb]
(483 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2018/12/13 | Accepted: 2019/12/1 | Published: 2021/02/28
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