内蒙古准格尔旗地下水环境承载力评价

Assessment of groundwater environment carrying capacity in Zhungeer County of Inner Mongolia

地下水环境承载力是水环境承载力研究的重要组成部分, 是衡量人类社会经济发展与区域水环境协调程度的判别依据.以内蒙古自治区准格尔旗为研究区, 建立地下水环境承载力评价体系, 并利用层次分析法（ AH P） 判断矩阵确定各指标的权重值, 进行研究区地下水环境承载力评价.结果表明, 准格尔旗地区地下水环境承载力在0.308 3-0. 731 1 之间, 平均为0. 521 5, 属于中等偏弱程度.评价结果与研究区水文地质条件和社会经济发展现状基本吻合, 可为准格尔旗在未来工业化进程中地下水资源管理和地下水环境保护决策提供依据.

Groundwater environment carrying capacity is an important component of the research in water environment carrying capacity,and it can be used to characterize the harmonious degree between the economic development and regional water environment.In order to evaluate the groundwater environment carrying capacity in Zhungeer County,we have adopted a wellknown method of analytic hierarchy process(AHP)to build up the index system,which consists of the natural indexes and social indexes.The indexes include the topographic slope,aquifer thickness of groundwater,groundwater level,nature of unsaturated zone,hydraulic conductivity,population density,the per capita GDP,crops sown area,water consumption per 10000 yuan GDP,and per capita groundwater exploitation.AHP matrix method was used to determine the weight for each index.The results showed that the numerical groundwater environmental carrying capacity in Zhungeer County is between 0.308 3and0.731 1with an average value of 0.521 5,which belongs to the moderately weak degree.The evaluation results were consistent with the hydrogeological conditions and socio-economic development in the study area,which suggested that the study can provide a theoretical basis for the groundwater resources management and groundwater environment protection decisions in the future of the industrialization process in Zhungeer County.