引黄灌区盐碱化预测模型

Salinization Prediction Model for Areas Irrigated with Water from the Yellow River

建立了预测引黄灌区土壤含盐量、地下水水位及地下水矿化度的数学模型．其中：土壤饱和层水量水质模型中的地下水流运动微分方程和溶质运移微分方程采用积分有限单元法求解；包气带中水分及含盐量运动模型采用分区水量盐量平衡方程求解．利用本模型，根据渠系引水量、排水沟排水量及地下水开采量等资料，就可对灌区土壤中含盐量、地下水位及地下水矿化度进行预报．

In this paper, a model for the prediction of the salt content in the soil, groundwater table, groundwater quantity and quality in irrigated areas is established. If the data of irrigation water from canals and drainage ditches as well as aquifers are known, it is convenient to predict the variation of groundwater table, salt content in the soil and the mineralization rate of groundwater in irrigated areas.