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为了研究我国东海海域近年来赤潮发生年际变化趋势及其影响因素,对渤海、黄海、东海和南海四大海域2000～2006年赤潮年发生次数及年累计发生面积进行分析比较,着重分析了影响东海赤潮发生的主要因素,长江口营养盐含量的变化趋势、长江口营养盐含量与东海赤潮现象的关联。结果表明,东海赤潮发生频率最高,且年累计发生面积位于我国海域之首;指出营养盐含量的年变化量对东海赤潮发生现象具有重要影响。
In order to study the interannual variation trend of red tide and its influencing factors in the East China Sea in recent years, the annual occurrence and accumulative occurrence area of red tide in the Bohai Sea, Yellow Sea, East China Sea and South China Sea from 2000 to 2006 were analyzed and compared, The main factors affecting the occurrence of red tide in the East China Sea, the changing trend of nutrient content in the Yangtze Estuary and the correlation between the nutrient content in the Yangtze Estuary and the red tide in the East China Sea. The results showed that the occurrence frequency of red tide was the highest in East China Sea, and the annual cumulative occurrence area was the highest in our country. It was pointed out that the annual variation of nutrient content had an important influence on the occurrence of red tide in the East China Sea.