【摘要】 为了解海河干流水体富营养化状况,于2012年8月对海河干流水质、浮游生物进行了调查。结果表明,海河干流综合营养状态指数(TLI(∑))为73.1,处于重富营养水平。浮游植物共计7门91种,丰度平均值为1051.6×104cells/L,以蓝、绿藻为主,优势种为微小色球藻(Chroococcus minutus)、水华微囊藻(Microcystis flos-aquae)和衣藻属(Chlamydomonas sp.)。浮游动物共计18种,丰度平均值为63.18 ind/L,优势种包括萼花臂尾轮虫(Brachionus calyciflorus)、近邻剑水蚤(Cyclops vicinus)、小栉蚤(Daphnia cristata)、跨立小剑水蚤(Microcyclops varicans)、裸腹蚤属(Moina sp.)、低额蚤属(Simocephlaus sp.)和幼体(Nauplius spp.)。依据多样性指数对海河干流浮游生物进行评价,表明海河干流处于中污染水平。更多还原

【Abstract】 In August of 2012,the water quality and plankton community structure were investigated in Haihe river to evaluate its trophic state. The comprehensive trophic level index( TLI( ∑)) was 73. 1,which indicating severe eutrophication. Total of91 phytoplankton species were identified. The average of phytoplankton abundance was 1051. 6 × 104 cells / L. The phytoplankton community was mainly composed by Cyanophyta and Chlorophyta. Chroococcus minutus,Microcystis flos-aquae and Chlamydomonas sp. Were the dominated species. Total of 18 zooplankter species were identified. The average of zooplankter abundance was63. 18 ind / L. Brachionus calyciflorus,Cyclops vicinus,Daphnia cristata,Microcyclops varicans,Moina sp.,Simocephlaus sp.and Nauplius spp. were the dominated species. According to the diversity index,Haihe river was at the medium pollution level.更多还原