选择亚热带富营养化浅水湖泊,研究了不同磷供给对人工附着基上附着藻类的影响.结果表明,磷供给的增加显著促进了附着藻类的丰度和生物量的增加.附着藻类群落优势种类为硅藻和绿藻,硅藻优势种为直链藻Melosira sp.、针杆藻Synedra sp.和脆杆藻Fragilaria sp.,绿藻优势种为四尾栅藻Scenedesumus quadricauda、二角盘星藻Pediastrum duplex和鼓藻Cosmarium sp..磷供给的增加对硅藻群落的种类组成影响不大,但增加了绿藻的种类数量.结果显示,磷是附着藻类群落发展的关键因子,要控制附着藻类以保护沉水植被必须减少磷的输入.%This paper investigated the impact of phosphorus on periphyton communities in a subtropical eutrophic lake. The results showed that increase in phosphorus supply significantly increased the abundance and biomass of periphyton. Dominant groups of periphyton were Bacillariophyta and Chlorophyta. Dominant species included Melosira sp. ,Synedra sp. ,Fragilaria sp. ,Scenedesumus quadricauda,Pedias-trum duplex and Cosmarium sp. The increase in phosphorus had no effect on species number of Bacillariophyta, but increased the species number of Chlorophyta. The study suggests that phosphorus is the key factor controlling the development of periphyton, and reduction in phosphorus input is needed in order to protect submerged macrophytes.
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