Restoration analyses of Yongding River in Beijing based on thrice water balance theory

It´s effective restoration approach to analyze the balance of water using and find out the water gap for Yongding River in Beijing in the face of ecological deterioration. This paper described the thrice water balance principle, connotation and theory based on the supply and demand balance, rationality and feasibility analysis. On this basis, this paper evaluated and analyzed the water resources condition, water supply and bearing capacity of water resources in detail, and provided and simulated various Scenario program due to actual situation. The result of restoration program can be used to restore ecological environment, such as pollution control, water zoology rehabilitate and so on, and also support regional water resource and water environment integrated management.