The model mainly uses the method developed by Deardorff in 1978 , accompanied with some improvements made by Noilhan in 1989. A numerical model has been established to simulate the evapotranspiration process of moisture on land - surface with different vegetative cover. It includes lots of physical parameters of ground and foliage , such as albedos and emissivities of ground and foliage ,net leaf area index , stomatal resistance and so on. The continuous variation of surface evapotranspiration and surface soil moisture content with different vegetative cover , and mean air humidity and surface temperature in different vegetation canopy were simulated ,
Diurnal variation of surface evapotranspiration and surface evapotranspiration with different vegetative cover were simulated also. By the way , heat balance have been compared over different vegetation cover. The results are in excellent agreement with others. It has successfully described the features of temperature and moisture during this process and the conversion process between components of heat on land - surface. We also do some experiments of validation at the same time , whose results are in excellent agreement with theory. The results indicate that the model can be used in mesoscale meteorology and region climate to simulate and forecast the process of transport of heat and evapotranspiration of moisture on land - surface with different vegetation cover.