黄土高原水蚀风蚀交错区土壤剖面水分动态的数值模拟研究

利用SWAP(Soil-Water-Atmosphere-Plant)模型对黄土高原水蚀风蚀交错区坡地土壤-植被-大气系统中的水循环进行数值模拟。结果显示,SWAP模型很好的模拟了不同土地利用方式条件下的土壤水循环过程。根据模拟结果,水蚀风蚀交错区的丰水年份,农地和种植第一年的紫花苜蓿地季末土壤水分稍有盈余,谷子和紫花苜蓿的日蒸散量分别为1.2~2.6 mm和1.2~2.5 mm。

The soil-water balance is very important in the ecosystem restoration in the typical water-wind erosion crisscross region on the Loess Plateau.An effective way to study the water balance is modeling.In this paper,a numerical model,soil-water-atmosphere-plant model (SWAP),is used to simulate the water balances and evapotranspiration in different land use patterns based on field observations.The results of SWAP model simulating soil-water balance are consistent with the observed values in different land use p...