Abstract:

A water resources supply and demand system dynamic model was built up to simulate the change trends of the balance of water resources supply and demand in Hunan Province from 2010 to 2030 in four different scenarios,such as traditional development model,economic development model,water saving model and concerted development model.The simulation suggested that the problem of water resources supply and demand was becoming increasingly conspicuous with growing population and fast developing economies in Hunan Province.Water resources supply basically met the growing demands of economic and social development,and generated great comprehensive benefits under concerted development model.It would be the best to develop and utilize water resources in Hunan Province.We should strengthen the management on water conservation,optimize economic structure,improve water conservancy construction,accelerate the recycling of waste water and environmental improvement,promote the utilization ratio and the support capabilities of water resources to realize the strategic goal of building a waterefficient society