区域地下水位监测提供了定量评价含水层地下水位持续下降及其对环境影响必不可少的信息。
Monitoring of regional groundwater levels provides important information for quantifying groundwater depletion and assessing impacts on the environment.
最主要的污染原因有：独特的水文地质条件，污灌，砂石坑垃圾回填，及区域地下水位下降。
The main pollution reasons include the species hydrogeologic conditions, sewage irrigation, landfill of municipal refuse, and regional groundwater drawdown.
地下河系统之间水位差异变化大，一般没有统一区域地下水位，难以区分补给资源、储存资源。
The water table discrepancies between sub-streams vary quickly, and there is no uniform groundwater head for an area.
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