Abstract:

Tidal flats cover a large area at Qiantang River Estuary. The scientific exploitation,utilization and protection of estuary tidal flats are of great importance to economic development,estuary engineering construction,channel exploitation,ecosystem services and environmental protection. This paper analyzed the difference between regulations of estuary tidal flat and that of seashore,and introduced the tidal flats at Qiantang River Estuary,including the alluvial movement history,exploitation progress in recent decades,current situation and cultivation achievements in terms of economic development and flood control. The major existent problems concerning exploitation progress,utilization and protection of tidal flats were also discussed in this paper. Besides,in accordance with the change of tide in recent years and the alluvial speed of tidal flats,some instructive advices were put forward on the further reclamation,such as paying attention to estuary engineering,optimizing channel,closely following homeostasis,and emphasizing comprehensive utilization and sustainable development of tidal flats.

Key words: tidal flat regulation, reclamation, Qiantang River Estuary, effect of regulation, scientific exploitation