3-D NUMERICAL SIMULATION ON THE CHARACTERISTICS OF ECOLOGICAL BOUNDARY LAYER FOR AGROFOREST ECOSYSTEM

A 3-D eco-boundary layer model including to pography and vegetation effect is proposed. In comparison with the traditional meteoro logical model of boundary layer, the thermal as well as dynamic effects are considered more detailed such as the solar radiation extinction with vegetation canopy, the evaportranspiration of water vapor with stomata of leaves, heat transfer with different kinds of soils during the growing process of agroforest plants. The simulated results of the model are in good agreement with the observational data in regard to the special agroforest ecosystem in the central area of Huang-Huai-Hai plain of China.