Cumulative impacts of coastline variation on hydrodynamic condition and environmental capacity of Jiaozhou Bay

This paper examines the definition and the generic typology of cumulative effects. The most important environmental problem caused by the development is the cumulative effects. Based on this theory, this paper selects Jiaozhou Bay as a typical coastal region, studies the cumulative effects on the hydrodynamic force environment and marine environmental capacity which caused by human reclaiming, and forecasts the hydrodynamic force and capacity change in the 2010 coastline planning. The results show the tide prism of Jiaozhou Bay is sensitive to coastline change and sea area. On the basis of coastline change, the velocity and direction of respective point in three respective year changes with different extent, which indicates that the water flow form can evidently influence coastline. It can be seen that, large areas of reclamation in Front Bay and Haixi Bay brings impact on the entire Jiaozhou Bay's water power condition, thus, the tendency of the environmental capacity for the pollutants of Jiaozhou Bay is still decreasing.