清潩河(许昌段)浮游生物群落结构及其与环境因子关系  

Plankton community structure and its relationship with environmental factors in Qingyi River(Xuchang section)

作　　者：安婉玉 郝子垚 黎亚辉 于鲁冀[1,2] An Wanyu;Hao Ziyao;Li Yahui;Yu Luji(School of Ecology and Environment,Zhengzhou University,Zhengzhou 450001,China;Research Center for Environmental Policy&Assessment of Zhengzhou University,Zhengzhou 450000,China;Henan Zhongfu Industrial Co.,Ltd.,Zhengzhou 451252,China)

机构地区：[1]郑州大学生态与环境学院,郑州450001 [2]郑州大学环境政策规划评价研究中心,郑州450000 [3]河南中孚实业股份有限公司,郑州451252

出　　处：《河南师范大学学报（自然科学版）》2023年第5期138-144,I0013,I0014,共9页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家水体污染控制与治理科技重大专项(2015ZX07204-002)。

摘　　要：清潩河是典型的基流匮乏型河流,水生态环境质量空间差异明显,为探究浮游生物群落结构特征及其与水环境的关联性,于2021年7月在清潩河(许昌段)开展浮游生物及环境因子调查,基于综合水质标识指数及生物多样性指数分析水体污染程度,并利用典范对应分析法分析干流与支流河段浮游生物群落结构的关键影响因子.结果显示:本次调查共检出浮游植物8门204种,群落结构为绿藻-硅藻-蓝藻型;检出浮游动物4门88种,群落结构以轮虫、原生动物为主;浮游生物多样性指数及综合水质标识指数均显示清潩河(许昌段)水质为轻度污染,但浮游生物优势种显示其有富营养化可能.典范对应分析结果显示,不同河段影响浮游生物优势种密度的关键影响因子有所不同:干流及支流浮游植物群落结构分别受WT、TP、DO、NO^(-)_(3)-N和COD_(Cr)、TN、NO^(-)_(2)-N、原生动物的影响,干流及支流浮游动物群落结构分别受TSS、甲藻和NO^(-)_(2)-N、COD_(Cr)、金藻、隐藻的影响.Qingyi River is a basal flow-scarce river,which has the obvious spatial differences in the quality of the water ecological environment.To explore the structural characteristics of plankton communities and their correlation with the aquatic environment,Plankton and environmental factor surveys were carried out in the Qingyi River(Xuchang section)in July 2021.This study evaluated the water quality in Qingyi river by using the improved comprehensive water quality identification index(WQI)and biodiversity index,and explored the relationships between the structures of the zooplankton and phytoplankton communities and environmental factors using canonical correspondence analysis(CCA).The results showed that 204 phytoplankton species belonged to 8 phyla,among which Chlorophyta、Bacillariophyta and Cyanophyta had higher richness.In addition,88 zooplankton species belonged to 4 major categories,dominated by Protozoa and Rotifer.The diversity of plankton and 、WQI indicates that the water body is light pollution,but the dominant species of plankton show the possibility of increasing eutrophication.Meanwhile,the results of CCA showed that the main influencing factors of the structure of the plankton community in the main stream and tributaries are different.The community structure of main stream phytoplankton was mainly affected by WT,TP,DO and NO^(-)_(3)-N,while in the tributaries,by COD_(Cr),TN,NO^(-)_(2)-N and protozoal density.The community structure of main stream zooplankton was mainly affected by TSS and Dinophyta,while in the tributaries,by NO^(-)_(2)-N,COD_(Cr),Chrysophyta and Crytophyta density.

关 键 词：清潩河 浮游生物 群落结构 环境因子 水质标识指数 

分 类 号：X835[环境科学与工程—环境工程]