【摘要】 为研究海河干流汛期富营养化状况,于2013年8月对海河干流进行了浮游植物调查和水质监测,并采用冗余分析(RDA),研究了浮游植物群落与环境因子的关系。结果表明,浮游植物共计5门37种(属),优势种为水华微囊藻(Microcystis flos-aquae)、微小色球藻(Chroococcus minutus)、颤藻属(Oscillatoria sp.)、钝顶螺旋藻(Spirulina platensis)和梅尼小环藻(Cyclotella meneghiniana)。浮游植物丰度范围为583.00~12 021.00×104cells·L-1,生物量范围为4.01~45.70 mg·L-1,以蓝藻为主,海河干流处于重富营养状态。RDA分析结果表明,硝酸盐氮是显著影响海河干流浮游植物丰度变化的主要环境因子。控制营养盐的输入是防治海河干流蓝藻水华的主要措施。更多还原

【Abstract】 In order to study the trophic state of Haihe River,the phytoplankton community structure and water quality were investigated and the relationships between of them were analysed based on redundancy analysis(RDA) in Haihe river in August of 2013.Total of 37 phytoplankton species were indentified,which was mainly composed by Cyanophyta,Microcystis flos- aquae,Chroococcus minutes,Oscillatoria sp.,Spirulina platensis and Cyclotella meneghiniana were dominated species.The phytoplankton abundance ranged from 583.00 to 12 021.00 × 104 cells / L,and biomass varied from 4.01 to 45.70mg/L,the trophic state of Haihe River is in the eutrophic level.According to redundancy analysis(RDA),nitrate nitrogen was the main factor affecting the phytoplankton community.Nutrient control is a hydrodynamic method to control cyanobacteria blooming in Haihe River.更多还原