Zhang Hongliang and Zhang Aijun, Branch of North China Sea, S.O.A

Abstract

Red tide is a calamity caused by the destruction of ecological equilibrium. In this article, we analyze the situation of the breakout of red tide in recent years and study the ecological characteristic of plankton. We find that the occurrences of red tide in areas of Huang Hai and Bo Hai are always accompanied by the abnormity of phytoplankton community structure (community succession), maritime eutrophication, reduction of fishery productivity, steady water dynamical conditions and ecological factors such as plenteous sunlight. Considering all the ecological factors mentioned above, we put forward a method of predicting ecological unbalance, applied in the middle period and long period prediction of Huang Hai and Bo Hai, and precisely select experimental maritime space and the startstop time of investigation. This method settles the foundation of red tide prediction and accumulates a lot of scientific data of the research on red tide prediction.