Abstract:

       The Caofeidian plan of sea reclamation land is the top one project of sea reclamation land in China. The plan area of sea reclamation land is 310 km² and an industrial area will be set up there. Caofeidian sea area has a good condition of water depth with two harbor potential areas, and it is reasonable to set up an industrial area which needs the good capacity of port transportation. The main shortcomings of the old plan of sea reclamation land are: The area of the sea reclamation land is too large to get a good benefit; Large earthworks are difficult to get; Especially the Caofeidian shoal tidal channel was blocked. The Caofeidian shoal tidal channel is an important tidal channel in the shoal area, and it has a key role to maintain the Laolonggou harbor potential area and sea environments, and it should be kept. The suggestions from marine experts promoted the modification of the Caofeidian plan of sea reclamation land. Recently a new Caofeidian plan of sea reclamation land has unveiled, and some main modifications are: The Caofeidian shoal tidal channel will be reopened; the NEE shoal tidal system will be restored; a large port will be set up in Laolonggou area and the Laolonggou harbor potential areas can be protected and utilized; earthwork balance is improved; coastline is increased; and sea environment influences are reduced. Of course, further modifications of the new plan are needed. Tianjin-Tanggu-Caofeidian area is one of the two main ground subsidence areas in China. Preparation should be done to relieve the troubles which result from ground subsidence, ocean calamity and earthquakes. The area of the sea reclamation land should be controlled. The principles of less reclamation land from sea and more inspection of the sea environment should be followed. Sea reclamation land should be carried out step by step under the endurable situation of the sea environmental capacity.

Key words: Caofeidian, plan of sea reclamation land, shoal tidal channel, sea environment impact