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Paper Information

Journal:   JOURNAL OF GEOGRAPHY AND PLANNING   FALL 2014 , Volume 18 , Number 49; Page(s) 167 To 190.
 
Paper: 

THE COMPARISON OF THE EFFICIENY OF MCDM MODELS IN SITE SELECTION OF FLOOD SPREAD IN GIS ENVIRONMENT (CASE STUDEY: GARABAYGAN CATCHMENT)

 
 
Author(s):  FARAJI SABOKBAR HASSANALI, HASANPOUR S., MALKIAN A., KIANI ALROD H.
 
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Abstract: 

The selection of suitable location for implementing of flood spreading project and artificial recharge of aquifers is an important step. To assess this purpose, the Geographic Information System (GIS) conceptual models and decision making systems were used.
Regarding different mentioned criteria, it is not possible to use GIS without appropriate Multi-Criteria Decision Making (MCDM) technique. The main aim for this research is to access the suitable location for flood spreading by using the most efficient criteria and classify them into several groups. Consequently, major factors such as slope, geology, geomorphology, hydrology, infiltration rate, cover and environmental impacts of the projects should be considered in the process of selecting appropriate site for artificial recharge through flood spreading. Also evaluating accuracy and application of conceptual models such as Logic Boolean, Multi class maps, Binary Evidence, the Analytic Hierarchy Process (AHP) have been noticed.
In this research, nine physical and environmental efficient variables essential for locating of flood spreading are used. The results indicate GIS-based data combination for ranking suitable location of flood spreading by itself, though it is not reliable enough. Also evaluating accuracy of models shows that accuracy of Binary Evidence model for identifying and ranking suitable location of flood spreading is more than that of Boolan model and the Multi class maps model can give better insights to create more realistic output scenarios The most important step in flood spreading process is to define optimal site. The Analytic Hierarchy Process (AHP) is an approach that is suitable for dealing with complex systems related to making a choice from among several alternatives and which provides a comparison of the considered options. In the present research relationship between GIS and Multi-Criteria Decision Making analysis has been investigated in order to find optimal site for flood spreading. The research emphasized the capability of resultant map to be used in site selection for flood spreading.

 
Keyword(s): GEOGRAPHIC INFORMATION SYSTEM, CONCEPTUAL MODELS, FLOOD SPREADING, THE GARBAIGAN SEGMENT, AHP
 
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