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王朝晖, 陈菊芳, 杞桑, 江天久, 齐雨藻. 肇庆星湖浮游植物状况及其富营养化评价[J]. 植物科学学报, 2000, 18(5): 405-411.
引用本文: 王朝晖, 陈菊芳, 杞桑, 江天久, 齐雨藻. 肇庆星湖浮游植物状况及其富营养化评价[J]. 植物科学学报, 2000, 18(5): 405-411.
Wang Zhaohui, Chen Jufang, Qi Sang, Jiang Tianjiu, Qi Yuzao. STUDIES ON QUANTITATIVE DISTRIBUTION AND SPECIES COMPOSITION OF PHYTOPLANKTON IN STAR LAKE AND THE EVALUATION OF ITS TROPHIC STATUS[J]. Plant Science Journal, 2000, 18(5): 405-411.
Citation: Wang Zhaohui, Chen Jufang, Qi Sang, Jiang Tianjiu, Qi Yuzao. STUDIES ON QUANTITATIVE DISTRIBUTION AND SPECIES COMPOSITION OF PHYTOPLANKTON IN STAR LAKE AND THE EVALUATION OF ITS TROPHIC STATUS[J]. Plant Science Journal, 2000, 18(5): 405-411.

肇庆星湖浮游植物状况及其富营养化评价

STUDIES ON QUANTITATIVE DISTRIBUTION AND SPECIES COMPOSITION OF PHYTOPLANKTON IN STAR LAKE AND THE EVALUATION OF ITS TROPHIC STATUS

  • 摘要: 研究了1996年4月至1997年7月肇庆星湖5个子湖泊浮游植物种类和数量变化。在1996年4月至1997年7月6次采样中,共鉴定出浮游植物82种,其中绿藻门37种,其次为硅藻和蓝藻门,优势种有鼓藻、栅藻、衣藻、席藻、直链藻、多甲藻和裸藻等。大多数采样点年平均浮游植物密度为104个/L至105个/L,整个湖泊年平均密度为4.28×105个/L。星湖各子湖泊全年的总氮、总磷含量分别低于1mg/L和0.1mg/L,以叶绿素a、总氮、总磷、氨氮、COD和BOD为参数的营养状态指数(TLI),除波海湖外均小于50。根据浮游植物种类和密度及综合营养状态指数评价结果,星湖的富营养化状况属于中营养化至富营养化之间,其中波海湖已达到富营养化水平,5个湖泊的富营养化程度由高至低依次为:波海湖、仙女湖、里湖、青莲湖、中心湖。

     

    Abstract: Studies were carried out in five small lakes of Star Lake,Zhaoqing,Guangdong Province,from April 1996 to June 1997. Eighty two species including 37 species of Chlorophyta,18 species of Cyanophyta,18 species of diatoms and 9 species of other algae were identified in samples of fifteen stations by six times sampling.The dominant species were Cosmarium,Scenedesmus,Chlamydomonas,Phormidium,Melosira,Peridinium and Euglena.Annual mean cell densities were between 104 and 105 cells per liter in most samples,the highest densities were observed in Xiannühu and Bohaihu.4.28×105 cells per liter of annual mean cell density was obtained in whole lake.Total Nand Pconcentrations were below 1.0 and 0.1 mg/Lin all sampling stations respectively.The Trophic Level Index (TLI) of Chla,TN,TP,NH3 N,COD and BOD were lower than 50 except Bohaihu.Based on results obtained,the trophic status of Star Lake was between meso eutrophication and eutrophication.The trophic levels of its five small lakes,from the highest to the lowest,were Bohaihu,Xiannühu,Lihu,Qinglianhu and Zhongxinhu successively.

     

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