No abstract

To evaluate the water budgets of sand dunes, soil water content was observed at Desert in China. A bare and vegetated dune area were selected for observation.Soil water content of the vegetated field was lower than that of the bare field because of water uptake by plant roots. Because of lateral flow along the slope, soil water content at the bottom of the dunes increased a few days after rainfall, especially for bare surface. The Eulerian correlations were calculated and the results indicated the lateral water movement along the slope.