作　　者： ; ; ; ; ; (杨昌珍）; (刘寅初）;

机构地区： 湖南农业大学动物科学技术学院

出　　处： 《水生态学杂志》 2009年第5期12-18,共7页

摘　　要： 于2008年8月对湖南省西洞庭湖区40个典型养殖水体的浮游植物和水质理化指标进行了调查与分析。结果表明,40个养殖水体中共发现浮游植物67属101种,优势种类为铜绿微囊藻(Microcystis aeruginosa)、银灰平裂藻(Merismopedia glauca)、卷曲鱼腥藻(Anabaena circinalis)、水华鱼腥藻(Anabaena flos-aquae)、小席藻(Phormid-ium tenue)、十字藻(Crucigenia apiculata)、二形栅藻(Scenedesmus dimorphus)、四尾栅藻(Scenedesmus quadricauda)、集星藻(Actinastrum hantzschii)、卵形隐藻(Cryptomonas ovata)、羽纹脆杆藻(Fragilaria pinnata)、简单舟形藻(Navicula simplex)、尖针杆藻(Synedra acus)。浮游植物平均密度高达3.19×107个/L,变动范围9.46×104～1.32×109个/L。浮游植物密度与蓝藻密度存在良好的相关性,相关系数达到0.940(P<0.0001)。Shannon-Wiener多样性指数(H′)的变化范围为1.00～3.74。利用浮游植物细胞密度和多样性指数作为水体状况评价指标,初步评价表明,对于人工养殖水体而言,采用半精养模式的水体污染程度相对最轻。 In Augest 2008, the phytoplankton and water quality in 40 aquacultural waters were investigated and analyzed in West Dongting Lake Area. A total of 67 genera and 101 species of phytoplankton were detected, of which Microcystis aeruginosa, Merismopedia glauca, Anabaena circinalis, Anabaena flos-aquae, Phormidium tenue, Crucigenia apiculata , Scenedesmus dimorphus , Scenedesmus quadricauda , Actinastrum hantzschii , Cryptomonas ovata , Fragilaria pinnata, Navicula simplex and Synedra acus were dominant. The average cell density of phytoplankton was 3.19 x 107 cells/L （9.46×10^4～1.32×10^9cells/L）. There was a significant correlation between cell densities of phytoplankton and cyanobaeteria （R = 0. 940, P 〈 0. 0001 ）. The Shannon-Wiener diversity index （H＇） ranged from 1.00 to 3.74. Water quality assessment was calculated by using diversity index and cell density of phytoplankton. It was indicated that semi-intensive aquacuhural waterbodies were polluted lightly, compared with the other three kinds of aquacuhural waterbodies.

关 键 词： 西洞庭湖区 养殖水体 浮游植物 多样性指数 水质评价

领　　域： [环境科学与工程]