The Response of a Phytoplankton Community to Ecosystem Restoration in Huizhou West Lake
The Response of a Phytoplankton Community to Ecosystem Restoration in Huizhou West Lake
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DOI：
10.3724/sp.j.1142.2010.40453
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
C. Liang;Zhang Xiufeng;Liu Zhengwen
中科院分区：
文献类型：
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作者：
C. Liang;Zhang Xiufeng;Liu Zhengwen
惠州西湖实施生态系统修复工程（广东省）自2004年以来，沉水植物现在占主导地位的恢复区，对恢复区和平湖市的浮游植物进行了调查，（未修复区域）结果表明，在2008年6月至2009年5月期间，浮游植物的群落结构和数量均发生了变化，浮游植物的年平均生物量和细胞密度分别为0.31 mg/L和2.75×106 cells/L，明显低于平湖（3.27 mg/L和197.46×106 cells/L）。恢复区浮游植物种类丰富度指数为3.70，明显高于平湖（2.68）.本研究表明，通过重新-建立水生植物优势是控制浮游植物生长发育、改善湖泊水环境的有效途径。
An ecosystem restoration project has been carried out in Huizhou West Lake(Guangdong province) since 2004.Submerged macrophytes now dominate the restored area,and water clarity and quality have significantly improved.We investigated the phytoplankton in both the restored area and Pinghu(un-restored area) from June 2008 to May 2009 to reveal the response of phytoplankton to ecosystem restoration of the lake.Results showed that both the community structure and the quantity of phytoplankton in the restored area changed greatly compared to the un-restored area.The annual average biomass and cell density were 0.31 mg/L and 2.75×106 cells/L,respectively,which was much lower than for Pinghu(3.27 mg/L and 197.46×106 cells/L).In Pinghu,Cyanophyta dominated for most of the year and some species,such as Pseudoanabaena sp.,became the most abundant species.Conversely,species of Cryptophyta,Chrysophytax,and Pyrrophyta dominated in the restored area.In addition,Margalef species richness index of phytoplankton in the restored area was 3.70,significantly higher than in Pinghu(2.68).The present study showed that ecosystem restoration by re-establishing macrophyte dominance is an efficient way to control the development of phytoplankton and improve the aquatic environment of lakes.