中文摘要：

为了研究海河下游天津段浮游生物的分布特征,在海河下游七个区域共设置28个调查站位,于2013年5月、7月、9月对各站位表层水体的浮游动植物丰度、生物量进行采样调查和分析。调查期间共发现浮游植物117种,浮游动物20种,浮游植物的平均丰度为8.145×10^4cells/L,主要优势种为蓝纤维藻（Dactylococcopsis）、颤藻（Oscillatoria）、四尾栅藻（Scenedesmus quadricauda（Turp.）de Bréb）、纤维藻（Ankistrodesmus）,以蓝、绿藻为主;浮游动物的平均丰度为7.679×10^4 ind/L,主要优势种为近邻剑水蚤（Cyclops vicinus）、短尾秀体溞（Diaphanosoma brachyurum（Liévin,））、萼花臂尾轮虫（Brachionus calyciflorus）。

英文摘要：

In order to study the haihe river downstream distribution characteristic of tianjin section of plankton,seven in the haihe river downstream region a total of 28 set survey stance,in May 2013,July,September to a surface water floating plants and animals of every abundance,biomass of sampling investigation and analysis.Were found during the survey period and 117 kinds of phytoplankton,zooplankton 20 kinds,phytoplankton abundance to an average of 8.145×104 cells/L,The main dominant 1species：Dactylococcopsis、Oscillatoria、Scenedesmus quadricauda（Turp.）de Bréb、Ankistrodesmus,give priority to with blue and green algae.Zooplankton abundance to an average of 7.679×104 ind/L,The main dominant species Cyclops vicinus、Diaphanosoma brachyurum（Liévin,）、Brachionus calyciflorus.