中国近海生物－光学特征及其与初级生产力关系的研究

Investigation on optical property, phytoplanton and primary productivity at different station in Yellow Sea and East China Sea and study on absorption of pure sea water CDOM CPOM CPIM and phytoplanton was carried out. The results showed that the color and brightness of the ocean provide a wealth of information regarding the composition and concentration of particulate and dissolved matter, color providing clues about the nature of absorbing materials and brightness the suspended particle concentration. In Eusturine area, the attenuation coefficiency of upward radiance is high due to the high turbidity. It refers as Case II water. In continenal slope area, the K, is low. And, between the two area, there is a transition area with medium attenuation coefficient. The primary productivity here is often high with frequent red tides. During red tide events, the attenuation coefficient increases and the nature of spectrum changes. Based on this feature, Satellite Remote Ocean color can be applied for the monitoring of red tides. The vertical profile of chlorophyll a and primary productivity is determined largely by the vertical mixing and vertical structure of temperature and salinity in water column.

大气中二氧化碳浓度正以1ppm/年的速率增加，必将导致全球气候与海平面的变化。浮游植物光合作用是海洋中有机碳生产的基础，它在碳的生物化学循环中起关键作用。光是海洋初级生产的关键因子。本项目将通过对海水生物－光学特性的研究，将中国近海划分为不同的“生物－光学区域”，然后研究不同区域中“海水生物－光学性质”与初级生产力的相关关系。