Locating flood spreading suitable sites for groundwater recharging through Multi Criteria modeling in GIS (Case study: Omidieh-Khuzestan)
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 5
Abstract
Use of geographic Information systems (GIS) to determine the suitable potential sites for flood spreading is not possible without using decision making systems. The aim of determining flood spreading suitable sites is enhancing ground-water in arid and semi-arid areas through spatial multi-criteria evaluation )SMCE( in GIS for combating with drought and dryness. Thus the area of Omidieh with 1262.55 Km2 was selected. In this study, economic factors such as, proximity to the road, the village and streams were considered. The natural limiting factors of slope, land use, geology, NDVI1 and soil texture were also involved so that in the spatial multi-criteria evaluation the factors ، Boolean and Fuzzy were standardized using related equations. Weight of factors was determined by the ranking method. In the next step, integration layers were performed by designing criteria tree in the ILWIS2 software environment which was resulted in the composite index map with fuzzy values (0 till 1). Consequently, suitable sites for flood spreading with values closer to1, had an area equivalent to 139.8425 Km2 and three priorities covered 11.7% of the area. This region has appropriate overlap with the implemented region of the flood spreading scheme; on the other hand, obtained evidence and reasons indicate suitability by selecting the SMCE model for this project.
Authors and Affiliations
Mina Arianpour, Ali Akbar Jamali
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