河南省浅层地下水动态演变分析

20世纪80年代以来,河南省地下水开采量持续增加,导致地下水补排关系失衡,地下水位持续下降,其中:海河流域平原水位下降了7.25 m,下降速率为0.24 m/a;黄河流域下降了3.14 m,下降速率为0.10 m/a;淮河流域与长江流域地下水位基本保持稳定。1980—2010年河南省平原区地下水位下降了1.65 m,地下水蓄变量减小了51.5亿m3,其中海河流域与黄河流域蓄变量大幅减小,部分含水层已疏干。

Analysis of Development of Shallow Groundwater Trend in Henan Province

Since the 1980s,the mining of groundwater continued to increase in Henan Province,leading to the imbalance in relationship between groundwater recharge and discharge,declining groundwater levels.Water level of the Haihe River basin dropped by 7.25 m with decrease rate of 0.24 m per year;water level of the Yellow River basin dropped by 3.14 m with a decline rate of 0.10 m per year;groundwater level of the Huaihe River and the Yangtze River basin remained stable.From 1980 to 2010,groundwater level of Henan Province plains dropped by 1.65 m,the variable of change in groundwater storage declined by 5.15 billion m3,of which the variable of the Haihe River and the Yellow River basin has been greatly decreased and some aquifer has been dewatering.