Evaluation of environment quality based on the analysis of environmental vulnerability and degradation driving force

Based on the different natural and social conditions of Funiu Mountain area of Huai River Basin,we constructed the environmental quality evaluation indicators using county-level administrative divisions as the evaluation unit,made a comprehensive environmental vulnerability assessment of environment to the whole region by analytic hierarchy process,and degradation driving force assessment by principal component analysis based on the same indicators.The results showed that the excessive,strong and medium vulnerable regions occupied more than half of the study area,mainly located in central and eastern regions,and the light and slight vulnerable regions mainly located in western and southern mountains.There were six prominent driving forces affectting the environmental vulnerability of this area: excessive land reclamation,soil bulk density and thickness of litter,precipitation,agricultural development and industrial levels,topography and vegetation cover,cultural qualities of the situation.