常德市城市水系及景观湖泊浮游植物群落结构及其对环境因子的响应  

Variation of the phytoplankton community and its responses to environmental factors in landscape water body of Changde City

作　　者：谭梦婷 胡丽丽 杨春英 陈玲 向梓娟 曾凡志 周全民 Tan Mengting;Hu Lili;Yang Chunying;Chen Ling;Xiang Zijuan;Zeng Fanzhi;Zhou Quanmin(College of Life and Environmental Sciences,Hunan University of Arts and Science,Changde 415000,China;Engineering Research Center of Aquatic Organism Resources and Environmental Ecology,Changde 415000,China;Normal College,Hunan University of Arts and Science,Changde 415000,China)

机构地区：[1]湖南文理学院生命与环境科学学院,湖南常德415000 [2]水产生物资源与环境生态湖南省工程研究中心,湖南常德415000 [3]湖南文理学院师范学院,湖南常德415000

出　　处：《湖南文理学院学报（自然科学版）》2022年第3期70-75,共6页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：湖南文理学院博士启动项目(19BSQD24);湖南文理学院大学生创新创业训练计划项目(XDC2020047);湖南省教育厅基金项目(19C1270)。

摘　　要：2020年9月—2021年6月对常德市柳叶湖、穿紫河、丁玲公园、白马湖公园等城市景观水体5个点位的浮游植物群落及其主要水环境因子进行调查,分析了水体中浮游植物群落时空差异及其与水质环境因子之间的关系。结果显示:5个点位共鉴定出浮游植物8门98种;柳叶湖区域夏秋季蓝藻种类多,丰度高,主要优势种为微囊藻(Microcystis sp.)、平裂藻(Merismopedia sp.)、隐球藻(Aphanocapsa sp.)、浮生鱼腥藻(Dolichospermum planctonica)等,冬季以隐藻属(Cryptomonas sp)为优势种;穿紫河大小河街点位以绿藻种类居多,且藻生物量最高,夏季以实球藻(Pandorina sp.)和颗粒直链藻极狭变种(Melosira granulata var.angustissima)为优势种;丁玲公园和白马湖公园为绿藻–硅藻型水体,蓝藻种类相对较少,春季优势蓝藻为蓝纤维藻(Dactylococcopsis sp.)。RDA相关性分析结果表明蓝藻丰度与水体总磷、水温和叶绿素a正相关,硅藻、隐藻在冬季为优势种群,且与总氮呈正相关关系。Five sampling sites were selected from Lake Liuye,River Chuanzi,Park Dingling and Baima from September 2020 to June 2021 to study the distribution of phytoplankton communities and main aquatic environmental factors.The relationship between phytoplankton structure and environmental parameters was analyzed.The results show that a total of 98 species belonging to 8 phyla were identified.The abundance and categories of cyanobacteria were the richest in Lake Liuye and the dominant species were Microcystis sp.,Merismopedia sp.,Aphanocapsa sp.and Dolichospermum planctonica.In addition,Cryptomonas sp was dominant in winter.The categories of Chlorophyta were rich and the average biomass of phytoplankton was the highest in River Chuanzi;the dominant species were Pandorina sp.and Melosira granulata var.angustissima in summer.Chlorophyta and Bacillariophyta were abundant in Lake Dingling and Lake Baima and the categories of cyanobacteria were less in the two lakes;the dominant species was Dactylococcopsis sp.RDA analyses showed that the abundance of cyanobacteria was positively correlated with TP,WT and Chl a;Diatom and Cryptophyta were dominant in winter and positively correlated with TN.

关 键 词：常德市 景观水体 浮游植物 环境因子 

分 类 号：X52[环境科学与工程—环境工程] Q948.8[生物学—植物学]