上海海洋大学学报2024，Vol.33Issue(5)：1176-1186,11.DOI:10.12024/jsou.20240204435
千岛湖浮游植物群落时空变化及其与环境因子的关系
Temporal and spatial changes of phytoplankton communities and their relationship with environmental factors in Qiandao Lake
摘要
Abstract
The dynamic changes of phytoplankton community and its relationship with major environmental factors are important for understanding the changes of lake and reservoir water environment and carrying out water environmental quality assessment.In this study,a monthly survey of phytoplankton and water environmental factors in Qiandao Lake was conducted from 2021 to 2022,and the characteristics of phytoplankton community structure,spatial and temporal distribution pattern and main environmental driving factors were analyzed,in order to provide important basic data for understanding the latest water environment changes and ecosystem evolution in Qiandao Lake.The results showed that a total of 240 species belonging to 8 phyla were identified,with Chlorophyta(51.67％ ),Bacillariophyta(21.67％ )and Cyanophyta(17.84％ )as the main species,and Cyanophyta and Bacillariophyta as the main dominant species.The average annual biological density from 2021 to 2022 was(404.21±116.59)×104 cells/L,and the average annual biomass was(0.84±0.22)mg/L,showing significant spatio-temporal differences in both biological density and biomass.Cyanophyta had the highest biological density and biomass of phytoplankton.Shannon diversity index showed significant seasonal differences,but no significant spatial differences,and there was no spatio-temporal difference in other indices.Spearman correlation analysis showed that phytoplankton density and biomass were significantly positively correlated with water temperature,ammonia nitrogen and permanganate index,and negatively correlated with transparency.RDA analysis showed that water temperature,ammonia nitrogen and nitrite were the main environmental factors affecting the distribution of phytoplankton dominant species in Qiandao Lake.关键词
千岛湖/浮游植物/环境因子/群落结构/相关性分析Key words
Qiandao Lake/phytoplankton/environmental factors/community structure/correlation analysis分类
生物科学引用本文复制引用
童璐,刘丹,段娇阳,胡忠军,盘家永,卢小利,崔帅康,刘其根..千岛湖浮游植物群落时空变化及其与环境因子的关系[J].上海海洋大学学报,2024,33(5):1176-1186,11.基金项目
国家重点研发计划(2023YFD2400900) （2023YFD2400900）
