Volume 19, Issue 72 (summer 2015)
jwss 2015, 19(72): 47-56 |
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Talebi A, Souzandehpour F, Dastorani M T, Karimian A A, Soltani M. Effects of Land Use in Present and Optimum Conditions on Sedimentation of Watershed (Case study: Shur & Shirin Watershed in Shiraz). jwss 2015; 19 (72) :47-56
URL: http://jstnar.iut.ac.ir/article-1-3060-en.html
URL: http://jstnar.iut.ac.ir/article-1-3060-en.html
Dept. of Watershed Management, Faculty of Natur. Resour., Yazd Univ., Yazd, Iran. , talebisf@yazd.ac.ir
Abstract: (13346 Views)
Land use is one of the basic factors for controlling the hydrologic behavior of watersheds. Therefore, it is generally assumed that land use change is the cause of variation in hydrological dynamic of watersheds. In this paper, the land use effect in present and optimum conditions on sedimentation of watershed was studied using GIS and applying the HEC-HM model in Shoor-Shirin watershed in Fars province. Land use map was provided based on curve number map, and this map was considered as the important factor for HEC-HM model. The results showed that the estimated sediments in two different conditions were completely different. In fact, the estimated sediment in the optimum condition was 12% less than the current land use. This means that land use change and land use type play important roles in decreasing or increasing the peak flow and erosion.
Type of Study: Research |
Subject:
Ggeneral
Received: 2015/08/23 | Accepted: 2015/08/23 | Published: 2015/08/23
Received: 2015/08/23 | Accepted: 2015/08/23 | Published: 2015/08/23
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