浅层地下水功能评价指标体系——以河南省平原岗区为例

Assessment index system for shallow groundwater function: A case study on the plain and hummock of Henan Province

河南省平原岗区因地下水开采出现了水位下降,严重超采地区形成局部降落漏斗,一些地区出现不同程度的地面沉降,咸水入侵淡水含水层以及地下水被污染。对此地区进行浅层地下水系统功能区划,自上而下构建了由系统层、功能层、属性层、指标层组成的评价指标体系,有19个评价指标。区划结果反映了研究区地下水功能状况。

Drawdown of water level appears in the plain and hummock of Henan Province due to groundwater exploitation, Depression cones come into being in some overdraft regions and land subsidence appears more or less. Saltwater intrudes the freshwater aquifer and groundwater is polluted. Function regionalization was carried out for the shallow groundwater system in the area. Nineteen indexes were chosen to constitute an assessment index system with the systematic level, function level, attribute level and index level. The function regionalization reflects the actual condition of groundwater function in the area.