基于脆弱性和退化驱动力分析的环境质量评价

 针对淮河流域伏牛山区不同区域的自然环境及社会经济特征,以县级行政区为评价单元,建立环境质量评价指标体系,然后使用层次分析法评价该地区环境脆弱性,并在同一指标体系下采用主成分分析法分析影响该区环境脆弱性的驱动力。结果表明:中度、强度和极强度脆弱区占淮河流域伏牛山区总面积的2/3以上,主要分布在研究区的中东部地区,而轻度和微度脆弱区分布在西部和南部的山区;影响该区环境脆弱性的6大驱动力为土地过度垦殖、土壤密度与枯落物量、降雨量、农业发展与产业结构水平、地形与植被覆盖、文化素质。

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.