%0 Journal Article
%T Characteristics of Phytoplankton Community Changes in Dianshan Lake During Peak Period of Algal Blooms<br>淀山湖水华高发期浮游植物群落变化特征研究
%A XU Chun-yan
%A YANG Jie
%A MA Ming-rui
%A HU Xue-qin
%A YOU Wen-hui
%A <br>徐春燕
%A 杨洁
%A 马明睿
%A 胡雪芹
%A 由文辉
%J 环境科学
%D 2012
%I 
%X Based on the investigation data of phytoplankton in Dianshan Lake from May to October in 2009,the characteristics of phytoplankton community and the dominant species succession are studied. The results show that Cyanophyta and Chlorophta are the main taxa. Cyanophyta is dominant in cell abundance and Chlorophta is dominant in species variety. From the flat distribution, the species variety and density of Cyanophyta are higher in west and southwest. The peak of cell density reaches 23.40×107 cells·L-1 in September due to the occurrence of cyanobacterial bloom, Cyanophyta account for 90.3 percents, with significant differences in each point (ANOVA, P<0.05). An obvious succession of phytoplankton species is found, Microcystis of Cyanophyta become the dominant taxa and then conglutinated together to form water bloom. Temperature and pH are the main factors that affect the cyanobacterial bloom, and wind direction is an important reason for the horizontal distribution of the bloom-forming Microcystis. The phytoplankton diversity index is poor in central and western sites, diversity index decreases during cyanobacterial bloom and the community structures are simple.
%K phytoplankton
%K species composition
%K cell density
%K dominant species
%K diversity index
%K correlation analysis<br>浮游植物
%K 种类组成
%K 细胞密度
%K 优势种
%K 多样性指数
%K 相关分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=C4328194C4128722DEF3F46A64D4114F&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=E158A972A605785F&sid=BE14F47B38DC36BB&eid=CF89D3C02791C82E&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=38