Integrating of Fuzzy Spatial Multi Criteria Evaluation and Fuzzy Analytic Network Process for Urban Parks sitting (Case study: region 8, Tehran municipality)

Background and The Importance of urban green space is undeniable in the sustainability of cities and their physical, natural and social effects in urban systems. For this reason, existence of urban green spaces in cities and a suitable distribution of them is one of the important issues in urban planning and management. The overall goal of this research is to determine the importance of affecting factors in site selection of parks and urban green spaces and also a suitable site selection of parks and urban green spaces in the study area.
This research is an analytic descriptive research. At first by using library and literature review and Delphi approach effective parameters in site selection of parks and urban green spaces were extracted and then, in FANP method pairwise comparison performed with relevant experts to determine significance and weighted of criteria. Then, data layers standardized in IDRISI software and were prepared in the form of Fuzzy. And finally prepared Fuzzy maps overlaid in GIS software by considering their weights to identify suitable locations for the construction of parks and urban green spaces in region 8 of Tehran municipality.
Findings: In this study distance from parameters of (Land use, Accessibility, population, Favorable centers and Ufavorable centers) are used to determine a park and green space site selection of region 8 of Tehran municipality. Each layers map prepared by using GIS and layer standardization in IDRISI software. Then for weighting and combining layers fuzzy analytic network process (FANP) and GIS is used.
Five operators of (Gumma, And, Or, Sum, Product) are applied to obtain final maps. Finally, fuzzy sum operator identified as a proper operator in park and green space site selection of region 8 of Tehran municipality. Five classes of very good, good, average, weak and very weak were considered for the final map of this operator.