A primary study on ecological risk caused by the heavy metals in coastal sediments

A system for assessment of the potential ecological risk caused by the heavy metals in coastal was established based on the mend element abundance in various environmental media and the marine organisms. The results of metal toxicity investigations, the effects of metal existing form in marine marine sediments on the metal absorption by marine marine and the sensitivity of marine ecosystem to the metal toxicity were also considered The ecological risk of Honghai Bay was evaluated as an example. The results from this evaluation could be ed as a reference of maximum Capacity for large scale aquaculture in the semi-closed bays of South China Sea.