Using this developed atmospheric-hydrologic coupling model, the rain fall event on June 23-25 , 2003 in Heihe River basin was simulated to study the feedback of land surface water cycle in atmosphere. It is indicated that the atmospheric fields were influenced by land surface water cycle process at large extent.
The humanity who used the water resources by highly intensity has changed the water cycle process and its ecology unity in Manas River Basin from the two aspects of the circulating way and the circulating characteristic,the water cycle in plain has occurred the dual differentiation leaded by the artificial water cycle.
ET, as an important component of water cycle, plays a significant role in the research of water cycle process, vegetation regulation to water process and sustainable use of limited water resources.
Based on this,the author studies North China water cycle process,water body movement ,pollutant transmission and it's coupling system with ecological environment evolvement,elucidates the formation cause of "dried river channe l,water body pollution,loss of wetland,exhaustion of groundwater",and put s forward the theoretic basis of ecological environment restoration.
Based on the water balance theory,a water cycle model of farmland ecosystem,effected by both nature and irrigation in subtropics hilly area in Eastern China was built.
Water shortage and pollution have become a limiting factor for the sustainable development of economy and society of Guangdong province. Strengthening regulation of social water circulation and constructing healthy water circulation is a strategic countermeasure to solve water resources problem of Guangdong province.