【作者】 姜作发； 战培荣； 赵吉伟； 赵春刚； 董崇智； 唐富江；

【Author】 Jiang Zuofa Zhan Peirong Zhao Jiwei Zhao Chungang Dong Chongzhi Tang Fujiang (Heilongjiang river fishery research institute of Chinese Academy of fishery sciences,Harbin 150070)

【机构】 中国水产科学研究院黑龙江水产研究所；

【摘要】 2001年5月、7月、9月对兴凯湖浮游植物种类及数量的变动进行了研究。浮游植物共计67种,以绿藻为主,占34．3％,硅藻占28．4％,蓝藻占23．9％。浮游植物生物量为0．8491 mg／L,硅藻最高,0．6304 mg／L,占74．2％,隐藻次之占18．3％。浮游植物数量为127．66×104 ind．／L,主要以蓝藻为主,54．17×104 ind．／L,占42．4％, 硅藻次之35．54×104 ind．／L,占27．8％。生物量季节分布以秋季最高0．9559 mg／L, 春季次之0．9274 mg／L,夏季最低0．6639 mg／L,水平分布Ⅲ>Ⅰ>Ⅱ。数量季节变以夏季最高204．62×104 ind．／L,秋季最低72．54×104 ind．／L;水平分布Ⅰ>Ⅱ >Ⅲ。从浮游植物种类组成、生物量、数量结合理化性状和生态条件评价,兴凯湖属中营养型湖泊,生态环境良好。更多还原

【Abstract】 The phytoplankton constitution of Xingkai Lake was investigated in May,July and September 2001. There are 67 species of phytoplankton , in which Chlorophyta accounts for 34.3 % , Bacillariophyta 28.4 % and Cyanophyta 23.9 %. The biomass totaled 0.849 1 mg/L, in which Bacillariophyta takes the first position of 74.2% and Crypto-phyta takes 18.35% in second. The density of phytoplankton is 127.66×104 ind. /L and the major species is Cyanophyta which accounts for 42.4% while Bacillariophyta take the second position of 27.8 %. The biomass in Autumn(0.955 9 mg/L) were more than that in spring(0.927 4 mg/L)and the biomass in spring were more than that in summer(0.663 9 mg/L) while we can know the zone distribution(Ⅲ>Ⅰ>Ⅱ). The density in summer get to the tip of the year(204.62×104 ind. /L) and that in the autumn decline to the lowest level(72.54×104 ind. /L) while we can know the zone dis-tribution(Ⅲ>Ⅰ>Ⅱ) . According to the constitution and the biomass of the phytoplankton, we can know that the lake of Xingkai is middle nutritious and the ecology condition is fine water quality.更多还原