福建长乐海区一次东海原甲藻赤潮生消过程分析

The analysis for dynamic process of a Prorocentrum donghaiense bloom in Changle sea area of Fujian Province

本文通过对2010年5月2—10日发生在福建长乐海区的一次东海原甲藻赤潮进行跟踪监测,分析并探讨了该赤潮生消过程。结果表明:东海原甲藻可在光照较强的气象条件下发生赤潮;本次赤潮暴发后东海原甲藻仍能快速增长并聚集,且主要利用硝酸氮作为氮营养成分;该赤潮生物在赤潮过程中承受低磷贫瘠环境胁迫的能力较强。对监测过程中海区各环境因子主成分分析也表明,本次赤潮限制因子有:硝酸氮、亚硝酸氮、水温以及盐度等。

Based on continuous monitoring, this paper analyzed and discussed the process of a Prorocentrum donghaiense bloom, which occurred in Changle Sea Zone of Fujian Province during May 2 and May 10 in 2010. This red tide organism could form red tide under weather condition of intense illumination; this organism mainly utilizes nitrate as its nitrogen nutrient after the formation, and it also has remarkable ability to with-stand the stress of low phosphorus in the environment. In addition, the principal components analysis of envi-ronmental factors in Changle sea area during the monitoring process showed that limiting factors of this red tide included NO3 - N, NO2 - N, water temperature, salinity, et al.