湖泊科学2025，Vol.37Issue(6)：1962-1977,16.DOI:10.18307/2025.0617
湖冰中浮游植物群落特征及其环境因子关系
Characteristics of phytoplankton communities in lake ice and their relationship with envi-ronmental factors
摘要
Abstract
Phytoplankton play a key role in maintaining ecosystem stability and function.However,research on the community structure of phytoplankton in lake ice during the ice-covered period and its relationship with environmental factors remains limited.To reveal the characteristics of phytoplankton communities in lake ice and their influencing factors,a sampling survey was conduc-ted in February 2023 on the phytoplankton and physicochemical indicators in the ice of Lake Dongjuyanhai,Wuliangsuhai,Hasu-hai,and Chagannaoer.The results showed:(1)A total of 132 species of phytoplankton were identified in the ice layers of Lake Wuliangsuhai,Lake Dongjuyanhai,Lake Chagannaoer,and Lake Hasuhai,with Cyanophyta dominating in abundance,accounting for 50.01％.In terms of species number,Chlorophyta and Bacillariophyta accounted for 34.85％and 33.33％,respectively.(2)In Lake Dongjuyanhai ice,26 species of phytoplankton were identified,with Chlorella sp.as the dominant species;in Lake Wuliangsuhai ice,80 species were identified,with Limnothrix sp.as the dominant species;in Lake Hasuhai ice,54 species were identified,with Microcystis sp.as the dominant species;and in Lake Chagannaoer ice,34 species were identified,with Ulothrix zonata as the dominant species.(3)The ecosystem in the ice of Lake Dongjuyanhai is relatively simple,with low phytoplankton diversity;the phytoplankton diversity in the ice of Lake Wuliangsuhai is higher;the phytoplankton diversity in the ice of Lake Ha-suhai and Lake Chagannaoer is at a moderate level.The similarity of algae among different lakes varies significantly,with the high-est similarity between Lake Wuliangsuhai and Lake Hasuhai,the largest difference between Lake Dongjuyanhai and Lake Wuliang-suhai,and Lake Chagannaoer exhibiting some uniqueness.(4)In the ice layers of different lakes,the survival of dominant phyto-plankton species was influenced by a combination of environmental factors,including salinity,temperature,total nitrogen,and to-tal phosphorus,with significant differences in the response of different species to these factors.Future studies should focus on the dynamic relationship between dominant phytoplankton species and environmental factors in ice layers to better guide lake ecological conservation.关键词
湖冰/分层冰/优势种/群落结构/相关性Key words
Lake ice/stratified ice/dominant species/community structure/correlation引用本文复制引用
张昊,史小红,卢俊平,赵胜男,孙标,崔志谋,全栋,卢宗福,孙嘉乐..湖冰中浮游植物群落特征及其环境因子关系[J].湖泊科学,2025,37(6):1962-1977,16.基金项目
国家自然科学基金项目(U2443225,52260028,52369014,52260029)、内蒙古自治区科技计划项目(2023YFDZ0022,2025YFHH0188)、内蒙古自治区直属高校基础研究资金项目(BR251202)、内蒙古湿地生态系统定位观测与研究站能力提升项目(BR251009)和内蒙古自治区科技领军人才团队项目(2022LJRC0007)联合资助. （U2443225,52260028,52369014,52260029）
