Modeling and Evaluating Soil Salt and Water Transport in a Cultivated Land–Wasteland–Lake System of Hetao, Yellow River Basin’s Upper Reaches

With the implementation of water-conservation projects in Hetao Irrigation District (HID), great changes have taken place ecohydrological process. A cultivated land–wasteland–lake system upper Yellow River Basin (YRB) was chosen to study soil salt and water transport process with Hydrus-1D model. The model parameters were calibrated validated by measuring data. Measured values good agreement simulated values. results showed, whole growth period, deep percolation land 34–40% total applied (rainfall irrigation). capillary rise land, wasteland, lake boundary 24%, 29–35%, 62–68% their own evapotranspiration, respectively. about 2 times that wasteland 2.6 land. storage 1 m zone more than 10% 18% greater exceeded a factor three. accumulation 13%, 37%, 48%. Soil salinization serious, some measures should be reduce content prevent salinization. act as theoretical basis for control HID.