石家庄平原区灌溉粮田增产对地下水的影响研究

本文通过对石家庄平原区粮食产量和地下水开采量及埋深动态变化特征的分析,揭示了粮食产量增加对地下水的影响机制。结果表明,除丰水年和枯水年份外,研究区地下水埋深不随主要补给项降水量的增减而表现出明显的增减变化,而与主要排泄项开采量关系密切,表现出明显的开采特性。小麦玉米产量的增加是驱动地下水开采量和埋深变化的根本动因,1982年以前,小麦玉米产量每增加1×104t,开采地下水量将增加1400×104m3,地下水埋深增加0.0448m;从1982年开始,小麦玉米产量每增加1×104t,地下水累积超采量平均增加3000×104m3,地下水埋深增加0.0705m。

Impact of Increases in Irrigated Grain Production on Groundwater in the Shijiazhuang Plain

In the Shijiazhuang Plain, surface water has been almost drying up. To this end, groundwater has been pumping for agriculture irrigation, accounting for about 80% of the total groundwater exploitation. In order to reserve and protect groundwater resources, it is critical to examine the relationship between groundwater exploitation and grain production. In the present work, the authors first analyzed variation characteristics of grain production and groundwater exploitation as well as buried depth. Then the ...