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浅层含盐地下水是造成土壤盐碱化的重要因素,地下水的升降变化又直接影响着土壤盐碱化的发展和演变。产生地下水位升降变化,主要是浅层潜水受到了灌溉水的补给而上升,受到蒸发作用(包括蒸腾作用)而下降。另外降雨和土壤冻结亦是促成潜水处于不稳定动态平衡的基本要素。(排水因素另论,此文没有计及)。根据现有资料说明,河套灌区为山前陷落盆地,处于封闭状态。地下水含水层厚在500米
Shallow salty groundwater is an important factor that causes soil salinization. The change of groundwater directly affects the development and evolution of soil salinization. Changes in groundwater level rise and fall, mainly due to shallow water supply by the irrigation water supply increased, by evaporation (including transpiration) and decline. In addition, rainfall and soil freezing are also essential elements that contribute to unstable dynamic balance of the dive. (Drainage factors in other words, this article did not take into account). According to the available data, the Hetao Irrigation Basin is a mountain settlement basin and is in a closed state. Groundwater aquifers are 500 meters thick