Eco-environmental Quality Evaluation of Coal City Based on AHP-PCA Model

In order to more scientifically and reasonably evaluate the eco-environmental quality situation of the coal city, 20 evaluation indexes including the physiography, land cover, vegetation, environmental pollution, surface disaster, society and so on were selected based on the ecological sensitivity-resilience-pressure model, an indictor system for the eco-environmental quality evaluation of the coal city was established by using Analytic Hierarchy Process and Principal Component Analysis model. The comprehensive evaluation results of the eco-environmental quality of the coal city showed that this evaluation method can objectively and quantitatively reveal the quality level and the spatial distribution characteristics of the eco-environment quality of the coal city, the evaluation results confirmed to the current situation of the coal city, so it has important practical value for the eco-environment management and industrial planning of the coal city.