Research Progress on the Ocean Estuary and its Enlightenment to the Study of the Tributary in Three Gorges Reservoir

This paper comments and analyses the research progress of the estuary sediment and ecological environment, including saltwater intrusion phenomenon and laws, sediment and ecological environment. The physical context, sediment and ecological environmental problems of the tributary bay of TGR are analyzed comparatively with those in ocean estuary. Based on the existing research and achievements, this paper puts forward that the research ideas and methods of the ocean estuary should be drawn from, and outlooks the future research works on the dynamic and ecological environmental problems in tributary bays of TGR.