基于主成分分析和熵的喀斯特地区地下水资源承载力评价

Assessment on groundwater resources carrying capacity in karst area based on component analysis and entropy

以贵州省为例,选取对喀斯特地区地下水资源承载力具有代表性的7个指标,借助spss分析软件用于对影响喀斯特地区地下水资源的主成分因子提取,并以熵权法对主成分因子赋权,得出1999~2007年贵州省地下水资源承载力的综合得分。可知毕节地区地下水资源承载力最大,黔西南州次之,贵阳市为最小。人口变化与经济发展是影响地下水资源承载力主要的驱动力因子。

This paper taking guizhou province as an example, choose to groundwater resources carrying capacity in karst area representative seven indicators,analyzed by SPSS software used for extracting principal components factor affecting groundwater resources in karst areas, and the entropy method of principal component factor empowerment, getting the comprehensive score of groundwater resources carrying capacity in guizhou in 1999 to 2007 composite scores. It is concluded that the groundwater resources carrying capacity in Bijie area is the largest, followed by the Qianxinan Prefecture, Guiyang city is the smallest. Population and economic development are the main driving factors of groundwater resources carrying capacity.