柳园口灌区地下水流数值模拟<br /> 和水资源可持续利用<br />
Journal Title: Science Paper Online - Year 2006, Vol 1, Issue 5
Abstract
本文建立了柳园口灌区的地下水流数值模拟模型，并用它探讨了灌区水资源可持续利用的策略。在柳园口灌区靠近黄河的灌区上游，作物通常由引黄水灌溉；而在离黄河较远的灌区下游，作物则是通过抽取地下水进行灌溉。灌区上游的田间渗漏是下游地下水的重要补给源。另一方面，太多的田间渗漏则会降低上游的灌溉水利用效率，同时使地下水位上升接近地表而导致土壤次生盐碱化。但如果下游地下水补给不够，将使地下水埋深增大而增加抽取地下水的成本，甚至导致地下水枯竭。因此，确保水资源的可持续利用的关键在于地表水和地下水的联合应用，并保持合理的地下水位。通过模拟灌区地表水和地下水的交互作用，我们评估了不同灌溉水管理条件下的响应，并探讨了灌溉水资源可持续利用的管理策略。通过对几种措施的分析表明，对灌区上部的水稻采用节水灌溉措施是可行的，并且应采取措施减少灌区下部的地下水开采强度。
Authors and Affiliations
Yufeng Luo , Yuanlai Cui, Shizhang Peng
Keywords
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