Impact of diversion water and pumpage for agriculture influenced by precipitation on groundwater
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摘要: 通过分析滹沱河流域降水量对黄壁庄水库径流量及石津灌区引水量影响,及其对引水量利用效率及地下水开采量影响分析表明,降水量与水库径流量、引水量和弃水量具有一定的正相关性,与引水利用效率成负相关。渠灌区农业地下水开采受降水量影响不明显,多年地下水位在潜水强蒸发带区间波动;井灌区以开采地下水灌溉为主,并受到降水量的明显影响,地下水呈逐年下降趋势。由此不同变化趋势,提出渠灌区适度开采浅层咸水与渠水混合灌溉,扩大渠灌面积,减少井灌区面积,对缓和井灌区地下水位下降有重要意义。Abstract: This paper analyzes the mountain precipitation impact on Huangbizhuang reservoir runoff and diversion water and plain precipitation and the impact of diversion water influence on surface water utilization efficiency and groundwater withdrawal. The results indicate that the more precipitation and the more runoff,the more water the reservoir can provide for agriculture and the lower water utilization efficiency. The precipitation has little impact on pumpage for agriculture in surface water irriga...
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