澜沧江小湾库区2017—2019夏季浮游植物功能群特征及其环境驱动因子  

Characteristics of phytoplankton functional groups and their environmental drivers in Xiaowan Reservoir area of Lancang River during the summer of 2017-2019

作　　者：彭梦 吴嘉伟 李罗新[3] 谭凤霞[1,2] 何秋杰 吴泽成 柴毅[1,2] PENG Meng;WU Jia-wei;LI Luo-xin;TAN Feng-xia;HE Qiu-jie;WU Ze-cheng;CHAI Yi(Engineering Research Center of Wetland Ecology and Agricultural Utilization,Ministry of Education,Yangtze University,Jingzhou 434025,Hubei,China;College of Animal Science,Yangtze University,Jingzhou 434025,Hubei,China;Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences,Wuhan 430223,China;Yunnan Xiaowan Ecological Fishery Limited Company,Fengqing 677000,Yunnan,China)

机构地区：[1]长江大学湿地生态与农业利用教育部工程研究中心,湖北荆州434025 [2]长江大学动物科学学院,湖北荆州434025 [3]中国水产科学研究院长江水产研究所,武汉430223 [4]云南小湾生态渔业有限公司,云南凤庆677000

出　　处：《生态学杂志》2022年第1期50-57,共8页Chinese Journal of Ecology

基　　金：湿地生态与农业利用教育部工程研究中心(KFT202006)资助。

摘　　要：为探究澜沧江小湾库区夏季浮游植物功能群的特征及其关键驱动因子,于2017—2019年8月进行采样调查。采用浮游植物功能群(FG)、冗余分析以及Pearson相关分析对数据进行分析。结果表明:调查共鉴定出浮游植物7门71种,其中绿藻门种类最多(34种,占比47.89%);依据FG分类法将鉴定出的71种藻类归纳分为23个功能群,根据优势度指数>0.2鉴定出重要功能群5种,不同年份优势功能群不同。功能群与环境因子的相关性分析结果显示,硝态氮和铵态氮是小湾库区主要限制因子,2017—2019年小湾库区始终处于氮限制状态。综合分析表明,浮游植物功能群特征与水环境因子之间有较好的一致性。小湾库区生态处于中度富营养化至富营养化状态,浮游植物功能群特征对小湾库区的生境特征表现出较好的指示作用。To explore the characteristics and key driving factors of phytoplankton functional groups in Xiaowan Reservoir area of Lancang River,a survey was conducted in August during 2017 to 2019.Data were analyzed by using functional groups classification,redundancy analysis and Pearson correlation analysis.A total of 71 species of phytoplankton from 7 phyla were identified,among which chlorophyta were the most phytoplankton species(34 species,accounting for 47.89%).The 71 species were classified into 23 functional groups according to functional group classification.The top 5 important functional groups were identified according to the dominance index(>0.2).The identities of important functional groups showed interannual variations.Results of the correlation analysis between functional groups and environmental factors showed that nitrate and ammonium were the main limiting factors in Xiaowan Reservoir,and the reservoir area was limited by nitrogen from 2017 to 2019.Results of comprehensive analysis showed that the characteristics of phytoplankton functional groups were consistent with the changes of water environmental factors.Xiaowan Reservoir was generally at the state of moderate eutrophication to eutrophication.The habitat characteristics of Xiaowan Reservoir area could be well indicated by phytoplankton functional groups.

关 键 词：小湾水库 浮游植物功能群 水环境因子 冗余分析 

分 类 号：Q948.8[生物学—植物学]