银川地区地下水环境演化

Evolution of Groundwater Environment in YinChuan District

本文在总结银川地区地下水监测点的多年水位和水质资料的基础上,研究地下水水位的动态变化和水质随时间的变化。分别对潜水和第一承压水的水位埋深及水质进行分析,结果表明:潜水水位动态变化受外界影响较大,由于人类的合理调控,盐化水域面积缩小,土壤盐渍化面积减小;承压水的水位动态受开采的影响,集中开采区第一承压水降落漏斗范围扩大,并逐渐引起水化学场发生改变。

Based on the quality data of overyear water table and groundwater, the research studied the dynamic variation of water table and quality of groundwater. The authors analysied separately the water depth of burial and quality of underwater and of the first confined water, and put forward these conclusions： The extraneous factors influenced easily dynamic variation of underwater table, and decreased the area of salification water and soil because of rational adjustment and control. The exploitation of confined water influenced dynamical variation of water table, enlarged the scope of descending hopper in exploitation region, and modified the hydrochemistry field gradually.