The zones of coexisting distribution can be influenced by hydrological conditions . in this paper , a method is used to estimate the biomass contribution of per population to total biomass that combined flow cytometric analyzing data and size - fractionated chlorophyll a data . the results of autumn cruise shows that synechococcus is a important contributor to pico - chlorophyll a , especially in e2 , e6 , e7 also be true to total chlorophyll a , which the percent value is 69 % , 56 % , 56 % respectively 本文还尝试把流式细胞计分析的数据与叶绿素a分级数据结合，粗略估计微微型浮游植物各类型的叶绿素a贡献，对秋季结果分析表明，在秋季聚球藻是pico一叶绿素a的主要贡献者，在e2 、 e7 、 e6站甚至是总叶绿素a的主要贡献者，分别达到69 % 、 56 % 、 56 % ，不过本法还存在许多缺陷，有待于进一步探讨。
