Measuring the Capacity of Physical and Social Sustainability of Cities The Case Study of Urmia City

Urban environment is a space where human needs are met and therefore it should be suitable for human life. Failure to pay attention to the social and physical dimensions of cities in sustainable development puts various development programs and projects at risk, because physical and social sustainability depends on justice in the physical distribution of services in an adequate manner. Therefore, in this research, an attempt has been made to measure the sustainability capacity of Urmia city based on social and physical indicators and using quantitative models. According to its purpose, this research is an applied research and according to the method of doing the work, it has a descriptive-analytical nature. Information has been collected through library studies, available articles, field studies and census data of Iran Statistics Center in 2015. Thus, after studying and reviewing the documents and sources related to sustainable development, effective social and physical indicators from the perspective of sustainability were extracted and then according to the availability of GIS data, 12 indicators were selected from among the various influential factors to reach the research output. The weight of the indicators was calculated using the best-worst method in Gamez software, and finally, by multiplying the weights in the standardized indicators based on fuzzy functions, the sustainability capacity in Urmia city was measured. The results show that 8% of the city area is in the very low stability zone, 16% in the low stability zone, 4% in the medium stability zone, 36% in the high stability zone and 36% in the very high stability zone.