人类活动对北京平原区地下水的影响

Impacts of Human Activities on the Groundwater in Beijing Plain

从地下水补径排条件变化和环境质量改变两方面,分析了人类活动对北京平原区地下水的影响。结果表明:受超量开采影响,北京地区水资源总量大幅减少;地下径流由原来的北西向南东流动变成现在的受地下水位降落漏斗影响,流向漏斗中心;由于污染物大量排放和对地下水超量开采,因此地下水氧化还原环境发生变化,导致地下水水质恶化,并造成了水位持续下降和地下水资源亏损等水环境问题出现。在此基础上提出:截断污染源和减少地下水超采可以控制地下水水质恶化趋势;抓住南水北调水进京之契机,实行地下水减采和回补涵养以恢复地下水资源及改善区域地下水环境质量。

This article from groundwater recharge,running and discharge conditions change,and environmental quality change these two aspects,discussed the effect of human activities on the groundwater in the plain of Beijing. Affected by the excessive exploitation,the total water resources of Beijing are sharply reduce. The groundwater flow direction from north east to south west flow becomes now controlled by the drawdown funnel. Due to large amounts of pollutant emission and excessive exploitation of groundwater,groundwater REDOX environment change,lead to underground water quality deterioration,and produce a sustained drop in water level,land subsidence and other environmental geological problems. Finally it puts forward that for groundwater quality deterioration,it can cut off sources of pollution,reduces overdraft controls,takes the advantage of south water into Beijing to implement water conservation,restores the groundwater resources and improves the quality of the regional groundwater environment.