基于SST的东海原甲藻比生长率时空分布规律研究

以东海近岸海域为研究区，结合2005年—2016年月均海水温度卫星遥感产品，根据比生长率的温度响应关系，模拟了东海原甲藻比生长率的时空分布。在此基础上，分析了东海原甲藻比生长率的月际变化、年际变化，并与赤潮发生频次进行了对比分析，结果表明，东海原甲藻在每年4月—6月间的比生长率较高，相应的赤潮高发时段也出现在该时段；其中，5月份东海原甲藻赤潮发生频次约占全年的69%，这与藻种比生长率月际变化有较好的一致性；赤潮一般发生在月度增温阶段，且赤潮发生频次与增温幅度呈正相关；此外，赤潮发生频次与比生长率年际变化趋势总体有一定相关性，但个别年份有所出入。本文研究结果可为进一步定量开展海洋生态系统评价技术，及其对气候变化的响应研究提供参考。

Study on spatial-temporal distribution of specific growth rate of Prorocentrum donghaiense Lu based on SST

The spatial-temporal distribution of specific growth rate of P.donghaiense was simulated based on the relationship between temperature and growth rate, using the monthly average sea surface temperature (SST) from 2005 to 2016 in the coastal waters of the East China Sea.Monthly and inter-annual variation of the specific growth rate were analyzed and compared with red tides in frequency.The results showed that the average specific growth rate was higher from April to June every year, which was consistent with the times of red tides in the coastal waters of the East China Sea.On average, the frequency of red tides in May accounted for about 69 % of the year, while was consistent with the monthly specific growth rate.Red tide caused by P.donghaiense usually occurs in warming months and the frequency of it is positively correlated with temperature increase.The times of red tides were consistent with the inter-annual variation of the specific growth rate of P.donghaiense except for individual years in the coastal waters of the East China.The result can provide a reference for further quantitative analysis of marine ecosystem and its response to climate change.