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Assessment of Factors Affecting Water erosion, Based on Quantitative Geomorphology Model (case study : Zonouz Chai watershed)
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Leyla Kashi Zenouzi *   , Hasan Ahmadi , Hoseyn Saadat , Ali Nazari Samani , Mohamad Namdar |
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Abstract: (10371 Views) |
| Analyzing The Erosen factors is necessary , as firist step , for modeling of Erosion and selecting suitable criteria and Indics . Based on the quantitative geomorphology model developed by the national specialists, the Analytical Hierarchy Process (AHP) was used to conduct the quantitative measurements of parameters affecting erosion. the hierarchical tree was developed consisting of six criteria: land cover, pedology, topography, land use, climate, geology, as well as ten indices: percentage of vegetation, growth forms, soil texture, permeability, slope, aspect, land use, type of precipitation, annual average precipitation, and lithology. the weight and importance of each criterion and index were determined, the factors affecting erosion in Zonouz chai watershed were prioritized and the weighted erosion rate map was developed .Rresults indicated, pedology and land cover had the priority weight by .896 and 0.51, respectively, in terms of impact on erosivity of Zanoz Chai watershed |
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| Keywords: quantitative geomorphology, analytical hierarchy process, prioritization, Zonouz |
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Full-Text [PDF 538 kb]
(2564 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2015/07/28 | Accepted: 2015/07/28 | Published: 2015/07/28
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