生态学报2025，Vol.45Issue(12)：5649-5659,11.DOI:10.20103/j.stxb.202408252012
闽三角典型水库藻类水华和pH对降雨气象条件的响应
Responses of algal bloom and pH to rainfall meteorological conditions in a typical reservoir of golden triangle of southern Fujian Province
摘要
Abstract
Under the backdrop of global warming,extreme weather events such as typhoons and storms are increasingly complicating the ecological processes in subtropical reservoirs.Based on five years of continuous monitoring data from 2019 to 2023 at Shanmei Reservoir in Fujian,we explored the response characteristics and mechanisms of algal blooms and high pH events to different rainfall-related meteorological conditions.The results show that algal blooms typically occurred from April to August,with filamentous cyanobacteria being the dominant species in terms of abundance.The maximum number of days per year with pH exceeding 9 reached 139,primarily occurring from April to August.The thermal stratification intensity in the euphotic layer(temperature difference per meter≥0.20 ℃),the number of non-rainy days within 7 days(fewer than 4 rainy days within 7 days),and total nitrogen(less than 1.80 mg/L)significantly contributed to the dominance of cyanobacterial abundance.Significant factors,including the thermal stratification intensity in the euphotic layer(temperature difference per meter ≥ 0.15 ℃),the number of non-rain days within 7 days(more than 7 non-rain days)and total phosphorus(≥ 0.034 mg/L)were key to pH increase(higher than 9).These results reveal the intrinsic relationships between meteorological conditions,cyanobacteria,and pH,and identify the meteorological and environmental threshold values when cyanobacterial dominance occurs and pH exceeds 9,thereby providing scientific basis for developing water quality management and protection strategies for urban drinking-water reservoirs in the golden triangle of southern Fujian Province under future climate change scenarios.关键词
蓝藻水华/亚热带水库/pH/热分层/真光层Key words
cyanobacterial bloom/subtropical reservoir/pH/thermal stratification/euphotic layer引用本文复制引用
陈辉煌,杨军,金磊,卢亦帆,王江滨,薛媛媛,罗安琪,王靖斌,张宏腾,Nwabuisi Simon Onyekachi..闽三角典型水库藻类水华和pH对降雨气象条件的响应[J].生态学报,2025,45(12):5649-5659,11.基金项目
国家重点研发计划项目(2022YFF1301302,2023YFC3304300) （2022YFF1301302,2023YFC3304300）
福建省对外合作项目(2022I0039) （2022I0039）
厦门市自然科学基金面上项目(3502Z202473082) （3502Z202473082）
