紧水滩水库后生浮游动物群落结构及水质营养状态评价  

Evaluation of Metazooplankton Community Structure and Water Quality in Jinshuitan Reservoir

作　　者：吕梦茹 丁奕帆 张瑞 刘洋 阚冬奇 张真[2] 刘其根[2] 杨家新 LV Meng-ru;DING Yi-fan;ZHANG Rui;LIU Yang;KAN Dong-qi;ZHANG Zhen;LIU Qi-gen;YANG Jia-xin(Jiangsu Province School of Marine Science and Engineering,Nanjing Normal University,Nanjing 210023,China;College of Fisheries and Life Science,Shanghai Ocean University,Shanghai 200090,China)

机构地区：[1]南京师范大学海洋科学与工程学院,江苏南京210023 [2]上海海洋大学水产与生命学院,上海200090

出　　处：《长江流域资源与环境》2023年第2期354-364,共11页Resources and Environment in the Yangtze Basin

基　　金：国家重点研发计划项目(2019YFD0900605)。

摘　　要：为了解紧水滩水库后生浮游动物(以下简称浮游动物)群落结构及水质营养状态,于2019年10月(秋)、2020年1月(冬)、2020年5月(春)和2020年8月(夏)对浙江丽水紧水滩水库后生浮游动物群落结构和水体理化因子进行了调查研究。结果共鉴定出33种浮游动物,分属于3类21属,其中枝角类物种数最多(13种),轮虫次之(11种)、桡足类最少(9种),且以枝角类和轮虫为主。浮游动物丰度夏季最高(311.7 ind.·L^(-1)),冬季最低(135.5 ind.·L^(-1)),枝角类和桡足类丰度占比较高。聚类分析结果表明该水库春、冬季浮游动物群落结构较为相似,夏、秋季较为相似。水库浮游动物优势种仅有虫宿温剑水蚤Thermocyclops vermifer、长额象鼻溞Bosmina longirostris和简弧象鼻溞B.coregoni 3种,优势度低,群落结构较单一。多样性指数(1.75<H'<2.64、0.71<J<0.90、1.93<D<3.80)显示紧水滩水库水质为轻-中度污染状态。冗余分析(RDA)结果表明,影响浮游动物群落结构的主要环境因子为水温(WT)、水深(WD)、总氮(TN)、总磷(TP)、溶解氧(DO)和pH值,另外,透明度(SD)、高锰酸盐指数(CODMn)对浮游动物群落结构也有一定程度影响。To explore the community structure of metazooplankton(referred to as zooplankton)and the status of water quality in Jinshuitan reservoir,the zooplankton community and water quality parameters were investigated and analyzed from October 2019(autumn),January 2020(winter),May 2020(spring),and August 2020(summer).Totally 33 species of zooplankton distributed in 21 genera and 3 phyla were identified.Among them,the species of cladocera were the most(13 species),followed by rotifer(11 species)and copepods(9 species),Cladocera and ritifer were the dominant zooplankton.The abundance of zooplankton was the highest in summer(311.7 ind.·L^(-1))and the lowest in winter(135.5 ind.·L^(-1)).Cladocera and copepods were more abundance.Moreover,the result of cluster analysis indicated that the zooplankton structures from spring and winter were similar,and zooplankton structures from summer and autumn were similar.Only three species,Thermocyclops vermifer,Bosmina longirostris,and B.coregoni,were dominant,demonstrating low dominance and simple structure of zooplankton community in the reservoir.The diversity indices(1.75<H'<2.64,0.71<J<0.90,and 1.93<D<3.80)showed that the pollution levels of water quality in the reservoir is slight or intermediate.The results of redundancy analysis(RDA)indicated that water temperature(WT),water depth(WD),total nitrogen(TN),pH,total phosphorus(TP)and dissolved oxygen(DO)were main factors affecting zooplankton community structure,while transparency(SD)and permanganate index(CODMn)also have effects on the zooplankton community structure.

关 键 词：紧水滩水库 浮游动物 水质因子 聚类分析 冗余分析(RDA) 

分 类 号：X826[环境科学与工程—环境工程]