贵州高原猫跳河流域浮游植物功能群组成特征及其与环境因子之间的关系  

Composition characteristics of phytoplankton functional groups and its relationship with environmental factors in Maotiao River Basin of Guizhou Plateau

作　　者：刘英龙 李秋华[1,2] 刘晨 肖晶 LIU Yinglong;LI Qiuhua;LIU Chen;XIAO Jing(Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province,Guizhou Normal University,Guiyang 550001,China;Guizhou International Science and Technology Cooperation Research Base-Water Ecology International Joint Research Center,Guiyang 550001,China)

机构地区：[1]贵州师范大学,贵州省山地环境信息系统和生态环境保护重点实验室,贵阳550001 [2]贵州省国际科技合作基地水生态国际联合研究中心,贵阳550001

出　　处：《生态学杂志》2023年第4期880-888,共9页Chinese Journal of Ecology

基　　金：科技部国家基础资源调查专项项目(2019FY101900);贵州省科技厅项目(黔科合平台人才[2020]6009、黔科合支撑[2020]4Y009号)资助。

摘　　要：猫跳河是典型喀斯特河流,其下游水库为贵阳市重要饮用水源。为探究猫跳河流域浮游植物功能群组成的动态变化特征及其与环境因子的相关性,基于冗余分析、相关性分析方法,于2020年6月、8月和11月对浮游植物与理化指标进行采样分析。结果表明:猫跳河流域调查期间共检出浮游植物7门67种(属),其中绿藻门种类最多;浮游植物群落结构呈时空异构,各采样断面浮游植物细胞丰度变化范围为0.11×10^(6)~17.71×10^(6)cells·L^(-1),生物量变化范围为29.85~1256.16μg·L^(-1);猫跳河流域浮游植物可划分为24个功能群,其中B、MP、S1、Y和D为猫跳河流域主要优势功能群,功能群D的生物量在8月达到峰值1256.85μg·L^(-1),主要优势功能群适应生境均为浑浊的中富营养水体;浮游植物功能群呈现显著时间演替特征。冗余分析结果显示:水温、pH和电导率是影响猫跳河流域浮游植物功能类群动态分布的主要环境因素。Maotiao River is a typical karst river,whose downstream reservoir is an important source of drinking water in Guiyang.To explore the variations of the composition of phytoplankton functional groups and its correlation with environmental factors in the Maotiao River Basin,phytoplankton were sampled and river physicochemical parameters were analyzed in June,August and November 2020,based on redundancy analysis and correlation analysis methods.During the investigation period,7 phyla and 67 species(genera)of phytoplankton were recorded in the Maotiao River Basin,with the most species from Chlorophyta.The phytoplankton community structure varied temporally and spatially.The phytoplankton cell abundance across sampling sections ranged 0.11×10^(6)^(-1)7.71×10^(6) cells·L^(-1),and biomass ranged 29.85-1256.16μg·L^(-1).The phytoplankton in the Maotiao River Basin could be divided into 24 functional groups,with B,MP,S1,Y,and D were the dominant functional groups.The biomass of functional group D peaked at 1256.85μg·L^(-1)in August.The dominant functional groups were adapted to turbid meso-eutrophic water bodies.The phytoplankton functional groups showed significant temporal succession.The results of redundancy analysis showed that water temperature,pH,and electrical conductivity were the main environmental factors affecting the variations of phytoplankton functional groups in the Maotiao River Basin.

关 键 词：浮游植物功能群 冗余分析 环境因子 猫跳河流域 

分 类 号：Q948.8[生物学—植物学]