巴河春季浮游动物群落结构及其与环境因子关系初探——以巴州区段为例
Preliminary Exploration of the Relationship between Plankton Community Structure and Environmental Factors during Spring in the Bahe River:A Case Study of the Bazhong Section
刘欣 1刘良 1刘镇豪 1秦强 1张绍斌 2张富斌1
作者信息
- 1. 西华师范大学 环境科学与工程学院,四川 南充 637009
- 2. 四川省巴中生态环境监测中心站,四川 巴中 636000
- 折叠
摘要
为探究巴河巴州区段春季浮游动物群落结构及其与环境因子的关系,2020 年 3 月在巴河巴州区段设置 7 个采样点,分别采集水质和浮游动物样品.水质分析结果表明:调查江段整体呈轻度富营养化状态;浮游动物共采集到 40 种,桡足类(Copepoda)和轮虫(Rotifera)为优势类群,浮游动物平均密度为 6 170.1 ind.·L-1,平均生物量为 38.36 mg·L-1.聚类分析和NMDS表明,在 40%的相似度上可将所有采样点分为 3 组.相似性分析(ANOSIM)结果表明,浮游动物群落结构存在显著的空间差异(R=0.593,P=0.029).冗余分析(RDA)结果发现,TN、NO3-N,TP,Chl-α、N∶P是影响巴河巴州区段春季浮游动物群落结构的主要环境因子.各采样点浮游动物Shannon-Wiener(H′)多样性指数范围为 0.82～2.29,Margalef丰富度指数(D)范围为 0.36～1.24,Pielou均匀度指数(J')范围为 0.32～0.96.基于多样性指数的水质评价结果显示,巴河巴州区段水体整体呈中污染至重污染型.本研究结果揭示了巴河巴州区段浮游动物群落结构与人为活动强弱存在一定的关系,可为巴河巴州区段水生态系统管理提供基础资料和科学依据.
Abstract
This study established 7 sampling points in the Bazhou region in March 2020 to collect water quality and zooplankton sam-ples,in order to investigate community structure of zooplankton and it's relationship with environmental factors in the Bazhou section of the Bahe river.The water quality analysis results showed that the whole research section was slightly eutrophication.A total of 40 species of zooplankton were collected.Copepoda and Rotifera were found to be dominant groups.The average density of zooplankton was 6 170.1 ind.·L-1,and the average biomass was 38.36 mg·L-1.The results of cluster analysis and NMDS showed that all sites were divided into 3 groups at 40%similarity.Similarity analysis(ANOSIM)showed that there were significant spatial differences in zoo-plankton community structure(R=0.593,P=0.029).The results of redundancy analysis(RDA)showed that TN,NO3-N,TP,Chl-α,N:P were the main environmental factors affecting the community structure of spring zooplankton in Bahe Bazhou section.Shannon-Wiener(H')diversity index ranged from 0.82 to 2.29,Margalef richness index(D)ranged from 0.36 to 1.24,and Pielou evenness in-dex(J')ranged from 0.32 to 0.96.The results of water quality evaluation based on diversity index showed that the water body in the Bazhou section of the Bahe river was medium to heavy pollution.The results showed that there was a certain relationship between the community structure of zooplankton and the strength of human activities in the Bazhou section of the Bahe river,and it could provide basic data and scientific basis for water ecosystem management in the Bazhou section of the Bahe river.
关键词
浮游动物/多样性指数/水质评价/巴河/水利工程Key words
zooplankton/diversity index/water quality assessment/Bahe river/hydraulic engineering引用本文复制引用
基金项目
四川省科技计划(2022NSFSC1646)
四川省科技计划(2022NSFSC1730)
西华师范大学博士科研启动金项目(21E034)
出版年
2024
国家科技期刊平台
NSTL
万方数据