Effects of Land Use in Present and Optimum Conditions on Sedimentation of Watershed (Case study: Shur & Shirin Watershed in Shiraz)

Autor:	Ali Talebi, F. Souzandehpour, M. Soltani, M. T. Dastorani, A A Karimian
Rok vydání:	2015
Předmět:	Hydrology Engineering Watershed Land use business.industry Erosion Sediment Forestry Land use land-use change and forestry Sedimentation Runoff curve number business Natural resource
Zdroj:	Journal of Water and Soil Science. 19:47-56
ISSN:	2476-5554 2476-3594
DOI:	10.18869/acadpub.jstnar.19.72.5
Popis:	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 condition s on sedimentation of watershed was studied using GIS and applying the HEC-HM model in ShoorShirin 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 decreas ing or increasing the peak flow and erosion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5439563abf0ba77380e87c12ad4f6613 https://doi.org/10.18869/acadpub.jstnar.19.72.5 Zobrazit plný text záznamu