泌阳凹陷碱矿平原区浅层地下水脆弱性评价

Evaluation on Vulnerability of Shollow Groundwater in Plain Area of Biyang Sag Alkali Mine

该文在系统研究地下水脆弱性评价常用方法——DRASTIC的基础上,重点结合泌阳凹陷安棚镇天然碱矿地区的实际情况,选定地下水埋深、含水层累计厚度、土壤有机质含量、净补给量和土地利用类型5个因子作为评价指标,利用层次分析、主成分分析主客观相结合的方法构建出权重体系。利用新构建的评价体系,借助GMS、GIS、SPSS等有效技术方法对该地区进行地下水脆弱性评价,得出该地区的地下水脆弱性分区图。评价效果良好,可为当地有关部门制定地下水资源环境保护和管理措施提供现实参考。

In this paper, based on the systematic study of the common method of groundwater vulnerability assessment:DRASTIC, combined with the actual situation of the natural alkali mine area in Anpeng Town, Biyang sag,five factors are selected as the evaluation indexes, including the groundwater depth, cumulative aquifer thickness, soil organic matter content, net supply and land use type.The weight system is constructed by AHP with PCA.Using the new evaluation system,the GMS, GIS, SPSS and other effective technical methods are used to evaluate the vulnerability of groundwater in this area, the vulnerability zoning map of groundwater in this area is obtained. The evaluation effect is good, which can provide the practical reference for the local authorities formulating the environmental protection and management measures for groundwater resources.