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.
作者
曾晨军
黄本胜
刘树锋
李虎成
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)
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)。
关键词
同沙水库
浮游植物
群落结构
多样性指数
环境因子
tongsha reservoir
phytoplankton
community structure
biodiversity indices
environmental factors
作者简介
曾晨军(1990-),男,博士,主要从事生态水力学研究工作。
