Factor Analysis of urban environment Quality in central part of cities Case study: Central part of Shiraz

Central part of metropolis Shiraz has had a significant role on social and economic functions of the city from the past until now. Social, economic and physical changes of this part have reduced its viability and urban environmental quality during the last decades. The central part of Shiraz has a socio-economic prominent role in the city and its historical and cultural heritage is one of the most functions of the city, too. It is essential to analysis its environmental quality reduction mechanism. Also, it is necessary to find out the spatial behavior or distribution of the urban environmental quality of life in the region in order to make theoretical platform and practical actions. So, the main question arises here: "What are the effects of environmental degradation factors and how is their special behavior? In order to answer the research question, 15 variables have been used. Variables have chosen from housing, occupation and activities, population structure, and social issues. Factor analysis and Kaiser-Meyer-Olkin Measure of sampling Adequacy (KMO) made research analytical methods. The results showed that 238 blocks of whole 375 blocks, have medium to low urban environment quality of life in the region. Findings mentioned the reduction of quality of life in Shiraz central part rooted in some reasons as habitation of foreign immigrants, social harms especially addiction and low employment rate of men and women.