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地理科学  2008 

苏打盐渍土土壤水分动态及其与浅层地下水的交换关系

, PP. 782-787

Keywords: 松嫩平原,盐渍化,土壤水分,分层土壤水分平衡模型

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Abstract:

以松嫩平原西部典型苏打盐渍土区为研究对象,以野外定位试验和室内模拟分析相结合,借助于分层土壤水分平衡模型,探讨苏打盐渍土壤水分运移的基本特征和规律,并分析其与浅层地下水之间的交换关系。研究结果表明,研究区内蒸降比较大,一般达到21以上,剖面土壤水分随蒸发、入渗过程呈现相应的转化;强烈地表蒸发作用下,地下水对上层土壤水分具有明显调控作用,土壤水分在50cm以下相对稳定,50cm以上受地表过程的影响变化较为显著。

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