同沙水库夏季浮游植物群落结构特征及影响因子分析  

Characteristics and Influencing Factors of Phytoplankton Community Structure in Summer of the Tongsha Reservoir

作　　者：曾晨军 黄本胜[1,2] 刘树锋 李虎成[3] 崔静思 吴蕴怡 杨凌玲 卢敏萍 ZENG Chenjun;HUANG Bensheng;LIU Shufeng;LI Hucheng;CUI Jingsi;WU Yunyi;YANG Lingling;LU Minping(Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510635,China;Guangdong Key Laboratory of Hydrodynamic Research,Guangzhou 510635,China;Maoming Water Authority,Maoming 525399,China;Guangdong University of Technology,Guangzhou 510006,China;Dongguan Water Authority,Dongguan 523000,China)

机构地区：[1]广东省水利水电科学研究院,广州510635 [2]河口水利技术国家地方联合工程实验室,广州510635 [3]茂名市水务局,广东茂名525399 [4]广东工业大学,广州510006 [5]东莞市水务局,广东东莞523000

出　　处：《广东水利水电》2023年第4期71-76,共6页Guangdong Water Resources and Hydropower

基　　金：国家自然科学基金面上项目(编号:42277060);广东省水利科技创新项目(编号:2020-21)。

摘　　要：为评估同沙水库水生态状况,于2021年8月在同沙水库开展了浮游植物样品的采集和水质状况的调查。依据Shannon-Wiener多样性指数(H')、Pielou均匀度指数(J)和浮游植物密度对水质和水体营养状态进行评价,采用Spearman相关性分析浮游植物与环境因子间的关系。结果表明:本次采样调查共鉴定出浮游植物6门48种,绿藻门种类数最多,占47.9%,蓝藻门次之(27.1%),优势种以蓝藻门微小平裂藻(Merismopedia tenuissima)、点形平裂藻(Merismopedia punctata)、微囊藻(Microcystis)为主,蓝藻门浮游植物密度、生物量均高于绿藻门。夏季同沙水库各采样点水质类型均为清洁—寡污染型,水体营养状态为富营养型,pH和NH_(4)^(+)-N是影响同沙水库浮游植物群落结构的主要环境因子。In order to assess water ecoenvironm ent in Tongsha Reservoir,we investigated the water quality and phytoplankton community in August 2021.Water quality and nutrient status were evaluated based on Shannon-Wiener diversity(H'),Pielou’s evenness indices(J)and phytoplankton density.The relationship between phytoplankton and environmental factors was analyzed using Spearman correlation analysis.The results showed that 48 phytoplankton species from 6 phyla were identified during the investigation.Chlorophyta and Cyanophyta account for 47.9%and 27.1%of all species,respectively.The dominant species of phytoplankton were Merismopedia tenuissima,Merismopedia punctata and Microcystis.The phytoplankton density and biomass of Cyanophyta were higher than Chlorophyta.The water quality of Tongsha Reservoir was in a clean to oligopollution state,and the nutritient status of Tongsha Reservoir was eutrophic.Spearman correlation analysis showed the main environmental factors affecting the phytoplankton community structure in the Tongsha Reservoir were pH and NH_(4)^(+)-N in summer.

关 键 词：同沙水库 浮游植物 群落结构 多样性指数 环境因子 

分 类 号：X522[环境科学与工程—环境工程]