Numerical Simulation on Characteristics of Water Consumption in Agroforestry: Model Establishment and Verification

This dissertation,applying the theory on water transport in soil water atmosphere continuum,develops a model of soil layered water balance of Agroforestry.This model has the main calculating methods of water factors in this model are: soil evaporation and plant transpiration,water uptake by roots of wheat and shelterbelt,water exchange between the soil layers,canopy rainfall interception.These theoretical data are obtained by numerical calculating method,and with experimental data of soil water content at 0～200cm depth.The results show:the developed model could be used to calculate the water uptake by roots,the evapo transpiration,and the extent that the shelterbelt exerts on the field soil water of shelterbelt and wheat.