Assessment and ranking of environmental pollution effects on the population centers(case study: Isfahan metropolis)

The emergence of environmental crises has always been a global concern. This concern becomes more acute when such crises affect large metropolitan areas. The purpose of this research is to evaluate and prioritize the consequences of the crisis of soil pollution, water pollution, air pollution including chemical and particulate matter pollution, as well as noise, optical and visual pollution of Isfahan city.
Therefore, using environmental data (e.g. particulate matters, air pollution, visual contamination, non-drinking water contamination, soil contamination, noise pollution and light pollution) related to the years 2016-2017 and employing the hierarchical process models as well as the William-Fine method, the impacts of environmental crises on the metropolitan area of Isfahan have been reviewed. The results of the research indicate that environmental crises of air pollution, visual contamination, non-polluting water pollution, soil contamination, noise pollution, and optical pollution with the alternative weights of 0.228, 0.258, 0.135, and 0.105, 0.084, 0.073 and 0.063 have the greatest impact on the metropolitan environment of Isfahan, respectively. Comparison of these results with the results of the simple hierarchical process method showed different ranking in the environmental crises. Simple hierarchical process method showed that optical pollution, visual contamination, and soil contamination have a priority of 1 to 3 which was unreliable due to the expertise