水阳江宣城段浮游动物群落结构特征及其影响因子  

Structural characteristics and influencing factors of zooplankton community in the Xuancheng section of the Shuiyang River

作　　者：郑志侠 朱晓岗 叶碧碧[2] 袁震[2] 杨文涛 刘延年 ZHENG Zhixia;ZHU Xiaogang;YE Bibi;YUAN Zhen;YANG Wentao;LIU Yannian(School of Biology,Food and Environment,Hefei University,Hefei 230601,China;National Engineering Laboratory for Lake Pollution Control and Ecological Restoration,Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]合肥大学生物食品与环境学院,合肥230601 [2]中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室,北京100012

出　　处：《生物学杂志》2025年第2期75-83,共9页Journal of Biology

基　　金：安徽省高校自然科学研究项目(KJ2020ZD59);宣城市青弋江、水阳江生态安全调查评估项目。

摘　　要：为阐明水阳江宣城段浮游动物群落结构的时空分布特征及其水环境影响因子,应用非度量多维尺度分析(NMDS)浮游动物群落的演替规律,采用冗余分析(RDA)研究浮游动物分布与水环境因子之间的相关性,于2022年8月、11月和2023年3月、6月对水阳江宣城段12个采样点位进行浮游动物调查。结果显示,共检出浮游动物4类151种,以轮虫类为主。各月份中以6月物种数为最多,3月最少,中下游河段物种数多于上游;优势类群16种,以原生生物和轮虫类为主,并且存在多个水体富营养化指示种。浮游动物现存量和多样性指数H′、J、D存在时空差异。浮游动物群落结构在时空上呈现一定的差异性与一致性。8月浮游动物受NO_(3)^(-)-N和TN影响较大,11月受NO_(3)^(-)-N、NH_(4)^(+)-N、DO共同影响,3月受WT影响,6月受COD、NO_(3)^(-)-N、pH、PO_(4)^(3-)-P共同影响。整体来看,研究区水体已呈富营养化,为α中污型。To elucidate the spatiotemporal distribution characteristics and water environmental influencing factors of zooplankton community structure in the Xuancheng section of the Shuiyang River,non-metric multidimensional scaling(NMDS)was applied to analyze the succession law of zooplankton communities and redundancy analysis(RDA)was used to investigate the correlation between zooplankton distribution and water environmental factors.Zooplankton surveys were conducted at 12 sampling points in the Xuancheng section of the Shuiyang River in August and November 2022,March and June 2023,respectively.The results showed that a total of 151 species of zooplankton in 4 categories were detected,mainly rotifera.The number of species was the highest in June and the lowest in March,and the number of species in the middle and lower reaches of the river was higher than that in the upper reaches.There were 16 dominant species,mainly Protozoa and Rotifera,and there were multiple indicator species of eutrophication in water bodies.There were temporal and spatial differences in zooplankton stock and diversity index H′,J and D.The structure of zooplankton community showed certain differences and consistency in time and space.In August,zooplankton were greatly affected by NO_(3)^(-)-N and TN,NO_(3)^(-)-N,NH_(4)^(+)-N and DO in November,WT in March,COD,NO_(3)^(-)-N,pH and PO_(4)^(3-)-P in June.On the whole,the water body in the study area has been eutrophicated,which isαmedium pollution.

关 键 词：水阳江宣城段 浮游动物 群落结构 环境因子 

分 类 号：Q14[生物学—生态学] X524[生物学—普通生物学]