淮河中游种质资源保护区浮游植物功能群演替特征及其驱动因子  

Succession characteristics and driving factors of phytoplankton functional groups in the germplasm resources reserve of middle reaches of Huaihe River

作　　者：王东伟 陈永进[2] 周彦锋[1,2] 张敏莹[2] 俞振飞[2] WANG Dongwei;CHEN Yongjin;ZHOU Yanfeng;ZHANG Minying;YU Zhenfei(Wuxi Fisheries College,Nanjing Agricultural University,Wuxi 214081,Jiangsu,China;Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization,Ministry of Agriculture and Rural Affairs,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Wuxi 214081,Jiangsu,China)

机构地区：[1]南京农业大学无锡渔业学院,江苏无锡214081 [2]中国水产科学研究院淡水渔业研究中心,农业农村部淡水渔业和种质资源利用重点实验室,江苏无锡214081

出　　处：《生态学杂志》2023年第11期2646-2654,共9页Chinese Journal of Ecology

基　　金：安徽省重点水域水生生物资源监测项目(ZF2021⁃18⁃0786);中国水产科学研究院基本科研业务费资助(2020TD61);国家重点研发计划项目(2020YFD0900500)资助。

摘　　要：为探究淮河中游种质资源保护区浮游植物功能群特征及其驱动因子,于2020年对淮河荆涂峡鲤、长吻鮠国家级水产种质资源保护区开展为期一年的季度采样调查。基于功能群分类法探究保护区浮游植物群落结构时空特征,使用相关性分析、冗余分析对数据集进行分析,并采用河流生态健康指数来探究保护区水生态现状。结果表明:保护区浮游植物功能群划分为27个,优势功能群为H1、J、P、Y、X2、D和MP,其季节演变趋势呈现MP/P/Y(冬季)⁃H1/J/P/Y(春季)⁃H1/P/X2(夏季)⁃D/X2(秋季)的趋势,其中功能群P在春、夏和冬季均为优势功能群;H1、P和X2为保护区各区域共有优势功能群,D为涡河特有优势功能群;冗余分析结果显示,叶绿素a、高锰酸盐指数(COD_(Mn))和pH为保护区浮游植物优势功能群演替的主要驱动因子;保护区生态健康指数变动范围为1.29~3.98,均值为3.07±0.72,水体总体呈现“好”的水质状态。A one⁃year quarterly sampling survey in 2020 was conducted to explore the characteristics and driving factors of phytoplankton functional groups in the Jingtuxia Cyprinus carpio and Leiocassis longirostris national aquatic germplasm resources reserve of Huaihe River.Based on functional group classification,the temporal and spatial vari⁃ations of phytoplankton community structure in the reserve were examined.Correlation analysis and redundancy analysis were used to analyze the data sets,and river ecological health index was used to explore water status in the reserve.The results showed that the phytoplankton in the reserve could be classified into 27 functional groups,and dominant functional groups were H1,J,P,Y,X2,D and MP.The seasonal variation followed a pattern of MP/P/Y(winter)⁃H1/J/P/Y(spring)⁃H1/P/X2(summer)⁃D/X2(autumn),with functional group P as the dominant functional group in spring,summer and winter.H1,P,and X2 were the common dominant functional groups in each region of the reserve,and D was the unique dominant functional group of Guohe River.Redundancy analysis results showed that chlorophyll a,permanganate index(COD_(Mn)),and pH were the main driving factors for the suc⁃cession of phytoplankton dominant functional groups in the reserve.The ecological health index of the reserve ranged from 1.29 to 3.98,with an average of 3.07±0.72,and the water quality was generally good.

关 键 词：种质资源保护区 浮游植物功能群 生态健康指数 驱动因子 

分 类 号：Q948.8[生物学—植物学]