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1995年 9月在杭州湾和长江口至舟山海区进行了浮游植物细胞丰度、叶绿素a浓度和初级生产力的现场观测研究 .结果表明 ,表层水浮游植物平均细胞丰度为(2 2 6 8± 6 3 33)× 1 0 4个 /dm3;平均叶绿素a浓度为 2 80± 3 46 μg/dm3,小于 2 0μm的微型和微微型浮游生物细胞对叶绿素a的贡献占 71 % ;平均初级生产力 (C)为6 92 5± 1 1 92 4mg/ (m2 ·d) ,小于 2 0 μm的微型和微微型浮游生物细胞对总生产力的贡献占 6 8% .河口区悬浮物质浓度高 ,浮游植物光合作用受光的限制 ,各项生物参数与真光层深度紧密相关 .生物锋区位于真光层深度 1 0～ 2 0m、盐度 2 6～ 32的长江冲淡水稀释区 .同时探讨了浮游植物细胞活性 (R)与光合作用同化数 (AN)、叶绿素a与初级生产力、叶绿素a与海面光谱反射率的相互关系 ,为海洋水色遥感在初级生产力的应用研究提供科学依据
Phytoplankton cell abundance, chlorophyll-a concentration and primary productivity in Hangzhou Bay and the Yangtze River estuary to Zhoushan sea area were measured in September 1995. The results showed that the average abundance of phytoplankton in the surface water was (2 2 6 8 ± The average chlorophyll a concentration was 2 80 ± 3 46 μg / dm 3. The contribution of mini and pico plankton cells to chlorophyll a was less than 20%, and the average primary productivity ( C) was 6 92 5 ± 1 1 92 4 mg / (m 2 · d), and the contribution of micro and picoplankton cells smaller than 20 μm to total productivity was 68%. The estuarine area had a high concentration of suspended matter and phytoplankton photosynthesis The biological parameters are closely related to the depth of the euophoric layer.The biological frontalis is located in the dilute dilution area of the Yangtze River with the depth of 10 ~ 20 m and the salinity of 26 ~ 32 in the euphotic zone.The phytoplankton cell activity R and photosynthesis assimilation number (AN), chlorophyll a and primary productivity, chlorophyll a and sea surface spectral reflectance, and provide a scientific basis for the application of ocean color remote sensing in primary productivity research