Contradiction of supply and demand of sediment resource in Yangtze River Basin and its countermeasures

Yangtze River is characterized as small sediment concentration and large sediment discharge,therefore,we should take measures to reduce or avoid sediment induced disaster and utilize sediment reasonably.According to measured data of flow and sediment in main control stations on mainstream of Yangtze River,statistics of sediment transport changes in the upper Yangtze River,the downstream channel of TGP,Dongting Lake water system,Poyang Lake water system and Hanjiang River in nearly 50 years are analyzed including the period after operation of TGP.We think that the sedimentation in Yangtze River Basin can be utilized as a kind of natural resources and discuss the ways for its realization as well.And the contradiction of supply and demand of sediment resource is revealed and its countermeasures are proposed.