喀斯特地区水资源现状承载力评价指标的选取——以贵州省为例

摘要

The selection of index is a key of evaluation of the carrying capacity of current water resources. Its evaluation indexes in karst areas is dif- ferent from those in non - karst -area because of their special geographical environment. Guizhou province is. The paper takes C, uizhou province , a typi- cal karst landscape area, as an example to select 21 factors, considering aspects of social economy, ecology and water resources conditions. Correlation a- nalysis and principal component analysis were made by SPSS15.0 software, aiming at 21 candidate indicators. Some assessmental indexes including per ca- pita water supply, urban per capita water consumption, rural per capita water consumption, irrigative water of per mu cropland, industry water consumption of ten thousand increased value, per capita grain output, per capita GDP, the praportion of environmental water consumption, the proportion of forest dis- tTibution, the prortion of rock - desertification area, the ratio of waste water and flow were selected to evaluate the carrying capacity of water resources.%指标的选取是水资源现状承载力评价的关键之一,特殊的地理环境使得喀斯特地区水资源现状承载力评价指标具有不同于非喀斯特地区的特点。贵州省是典型的喀斯特地貌发育区,本文以贵州省为例,在综合考虑喀斯特地区社会经济、生态、水资源几个方面的基础上,选取了21个影响因子。利用SPSS15.0软件对21个待选指标进行相关分析和主成分分析,得出喀斯特地区水资源现状承载力评价指标为：人均供水量,城镇人均生活用水量,农村人均生活用水量,亩均农田灌溉用水量,万元工业增加值用水量,人均粮食占有量,人均GDP,生态环境用水率,森林覆盖率,石漠化面积比重,污径比。