evaluation of the urban environmental quality of the city of tehran

this article presents the findings of an environmental evaluation carried out for the city of tehran . in year 2001 evaluation was based on a mathematical model, the subject of another study prepared for the evaluation of the urban environmental quality of major iranian cities. the model includes qualitative and quantitative features of a city, forming the whole structure of the model. those characteristics of the model that would contribute to the quality of urban environment, have been classified on the basis of their importance in the structure of the model. accordingly, in a hierarchical order a proper value has .been assigned to all the characters of the model. the purpose of this numerical approach is to conclude a figure (proxy), that regarded as the urban environmental quality index of the city of tehran, in the year that data have been collected. ' the degree of efficiency of the model depends on the availability of data and statistics for the year under consideration. this model is regarded as an efficient tool for evaluation of urban quality of the major iranian cities. further the results of this model can be used to overcome possible planning deficiency and to find the degree of impact of implemented environmental policy for enhancement of the urban environmental quality.