江苏海域赤潮分布特征研究

摘要

利用1997-2014年江苏海域赤潮发生记录资料,系统分析了江苏海域赤潮的分布特征,并对赤潮生物的种类和特征进行研究.结果表明,江苏海域赤潮发生平均2次/年,年发生频率并没有明显的趋势性变化.赤潮发生具有显著的季节特征,多发生在5-9月,又以5月份发生频率最高,7月份次之.赤潮发生区域主要集中在连云港海州湾海域和南通以东海域.连云港海域爆发的赤潮多为有毒的甲藻赤潮,少数为硅藻;南通海域赤潮种多为硅藻.连云港附近海域赤潮优势种的变化很可能与该海域营养盐的变化有关.%According to the record of red tides in the sea area of Jiangsu from 1997 to 2014,the characteristics of red tides in the sea area of Jiangsu are analyzed,and the species of red tide organism are discussed.The results show that the occurrence frequency of red tides is two times per year with no obvious trend change.The occurrence of red tides has significant seasonal characteristics,which most occurs from May to September.And among those months,May ranks first,followed by July.The red tide occurs mainly in the Haizhou Bay of Lianyungang and the east of Nantong coast.The dominant species are dinoflagellate species in the Lianyungang coast and diatom species in Nantong coast.The change of the dominant species in the Lianyungang coast is probably related to the changes of nutrients in that sea area.