全球变暖增加了强台风的强度和频度，因此加大了台风对海洋生态系统的影响。台风可以引起一系列海洋物理过程，进而影响海洋生态系统，包括海水温盐度、浮游植物和海洋初级生产力等。浮游植物粒径不同，可分为微微型、微型和小型，其环境响应和生态效应不同。我们亟需认识浮游植物粒径组成及其光合作用相关因素对台风的响应。本项目拟用航测和卫星遥感数据对南海北部台风前后海水浮游植物粒径组成及其相关因素进行系统研究，阐明浮游植物粒径组成与海水溶解氧浓度、二氧化碳分压对台风的响应过程和机理；研究浮游植物不同粒径的遥感特征，探索构建南海三种粒径浮游植物遥感反演模型；构建南海台风扰动下海洋物理-化学-生态耦合的生态动力学模型。该研究有助于全面认识台风的生态效应及其在全球气候变化与碳循环中的作用，为南海渔业资源开发提供科学依据。

With global warming, typhoon activity has been strengthening in both intensity and spatial coverage in the past several decades. Typhoons have a huge impacts on marine ecosystems, they can change the distribution of sea temperature, salinity, chlorophyll a concentration, phytoplankton, and thus can change marine primary productivity. Marine phytoplankton size classes can be divided into 3: picoplankton, nanoplankton, and microplankton; those 3 classes, together with their related marine ecological factors, such as pressure of carbon dioxide and seawater dissolved oxygen, have different response to typhoon. Up to now, however, our understanding of the response of the phytoplankton size classes, and related seawater dissolved oxygen, partial pressure of carbon dioxide, to typhoon is very limited. .This project, using in situ and satellite data, will investigate the impacts of typhoons on phytoplankton size classes and their ecological environmental factors in the South China Sea, and expound the response process of marine ecosystem to typhoon. The relationship between the maximum chlorophyll a specific photosynthetic rate and the sea surface temperature as well as the chlorophyll a concentration of three selected size classes of phytoplankton will be established. A new model of primary productivity for the three size classes of phytoplankton will be built by modifying the Vertically Generalized Production Model. By further accounting for other ecological factors, we will develop a coupled physical-chemical-biological model to study ecological effects of typhoon in the northern South China Sea. .The implementation of this project will lead to a more comprehensive understanding of typhoon’s ecological effects and its contribution to the global changes and carbon cycling, and also provide the scientific support for the fishery resources development and management; therefore, also contribute to the national ocean development strategy..