湖泊科学2026，Vol.38Issue(3)：919-930,12.DOI:10.18307/2026.0311
呼伦湖蓝藻水华驱动因子及防控对策
Driving factors and control measures of cyanobacterial bloom in Lake Hulun
摘要
Abstract
In 2022,frequent cyanobacterial blooms occurred in Lake Hulun,covering nearly the entire lake surface,degrading a-quatic landscapes,and posing serious threats to ecosystem health.To investigate the drivers of these large-scale blooms,water sam-ples were collected from surface,middle,and bottom layers at 13 sampling sites during spring,summer,and autumn of 2022.Cy-anobacterial species composition,abundance,biomass,and key water quality indicators were analyzed.A total of 22 cyanobacteri-al species were identified,with 10 dominant groups observed over the study period.Microcystis spp.remained the dominant genus across all seasons.The abundance and biomass of cyanobacteria varied significantly in different periods and depths.The abundance(2.58×109 cells/L)and biomass(3.30×102 mg/L)of cyanobacteria in summer were 1-2 orders of magnitude higher than those in spring and autumn.In spring,the abundance and biomass of cyanobacteria were the highest in the bottom layer of the lake,and the highest in the surface layer of the lake in summer and autumn.Correlation and redundancy analyses revealed seasonal differ-ences in influencing factors,identifying water temperature,nitrogen and phosphorus concentrations,dissolved oxygen,and pH as key environmental drivers of bloom dynamics.For management,we recommend moderate nutrient control with a dual nitrogen-phosphorus reduction strategy,along with enhanced bloom prediction,early warning,and emergency response capabilities.These measures are essential for mitigating bloom risks in eutrophic lakes such as Lake Hulun and may inform future cyanobacterial bloom control strategies in similar ecosystems.关键词
呼伦湖/富营养化/蓝藻水华/驱动因子/控制策略Key words
Lake Hulun/eutrophication/cyanobacteria water bloom/driving factors/control strategy引用本文复制引用
李兴月,刘晓民,刘廷玺,张生,王梓行,卢宗福,王文娟,杨耀天..呼伦湖蓝藻水华驱动因子及防控对策[J].湖泊科学,2026,38(3):919-930,12.基金项目
内蒙古自治区科技领军人才团队项目(2022LJRC0007)、内蒙古农业大学基本科研业务费专项资金项目(BR22-12-04)和内蒙古自治区教育厅一流学科科研专项项目(YLXKZX-NND-010)联合资助. （2022LJRC0007）
