北方城市景观河道浮游藻类群落结构特征

摘要

The community structure and species diversity of planktonic algae, and the relationships between planktonic algae and the physicochemical parameters of Jinhe River were analyzed. A total of 81 planktonic algae species belonging to 5 phyla and 39 genera were identified, among which Chlorophyta was dominant and followed by Euglena and Bacillariphyta. The dominant species were Spirulina masima, Cryptomonas erosa, Lepocinclis pseudotexta, Cryptomonas ovata and Chilomonas para-maecium. The results showed that the composition and distribution of algae species and water quality changes matched in principle, indicating that Jinhe River was at the state of the severe eutrophication.%为了解北方城市半封闭景观水体浮游藻类的群落组成,以津河为例,于2009年9月对其浮游藻类进行了调查,初步分析了浮游藻类的群落结构、物种多样性及浮游藻类与津河理化参数的相互关系.结果表明,共计调查浮游藻类81种,39属,绿藻种类最多,其次是硅藻和裸藻;优势种主要是极大螺旋藻(Spirulinamasima)、啮蚀隐藻(Cryptomonas erosa Her.)、伪编织鳞孔藻(Lepocinclis pseudotexta)、卵形隐藻(Cryptomonas ovata Ehr.)、素隐藻(Chilomonas paramaecium)；津河的浮游藻类组成、分布特点与津河的水质变化基本吻合,揭示了津河正处于重度富营养化状态的事实.