The Process of Water-heat Dissipation and Water saving Regulation in Agroecosystem
农业生态系统的水热耗散过程与节水调控

The situation of water resources deficiency is very scrious in the large areas of the arid, semi arid even semihumid of Huabel Plain, endangering the agricultural sustainable development. Based on the theory of SPAC which develops very fast in recent years, the linkage and division between the process of SPAC and ecological process are discussed on this paper. The concept of WUE is then generated from the node of this two proceses. It also has discussed the forcing functions of interfaces, water potential and water transfer resistance, water stress of crop and inducement and gain of overshoot mechanism, highly nonlineal and coupling of interface processes are discussed too. Through the studies on this paper, the theory and practical measurement of the corrdination between the regulation water heat transport interface and the mechanical regulation of ecological process provided in order to solve the problem of deficiency water resources and increase the sustanable production and water use efficiency. The paper also provides basement and practical way to carry out the sustainable development of agroecosystem and agriculture.