太湖无锡水域中藻源性磷对水体总磷贡献的研究

杨喆; 朱冰川; 张军毅; 宋挺; 戴玺铭; 徐源; 周文丽; 华圣明; 拓明香

引用本文:	杨喆,朱冰川,张军毅,宋挺,戴玺铭,徐源,周文丽,华圣明,拓明香.太湖无锡水域中藻源性磷对水体总磷贡献的研究[J].环境监控与预警,2025,17(1):51-55
	YANG Zhe,ZHU Bingchuan,ZHANG Junyi,SONG Ting,DAI Ximing,XU Yuan,ZHOU Wenli,HUA Shengming,TA Mingxiang.Study on the Contribution of Algae-derived Phosphorus to Total Phosphorus in Wuxi Watershed of the Lake Taihu[J].Environmental Monitoring and Forewarning,2025,17(1):51-55

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太湖无锡水域中藻源性磷对水体总磷贡献的研究
杨喆¹，朱冰川¹，张军毅²，宋挺¹，戴玺铭¹，徐源¹，周文丽¹，华圣明¹，拓明香³
1. 江苏省无锡环境监测中心，江苏无锡 214121；2. 江南大学环境与生态学院，江苏无锡 214266；3. 西北农林科技大学，陕西咸阳 712100

摘要:

为探究太湖中藻源性磷对总磷的贡献，分析水体总磷的波动与蓝藻水华暴发之间的关系，以太湖无锡水域为对象，结合当前浮游植物、总磷的采样和分析技术规范，调查了藻类聚集区域的藻种组成、藻密度及水体中不同形态的磷质量浓度，分析了藻源性磷对水体总磷的贡献。结果表明，蓝藻水华主要优势种为微囊藻，单个微囊藻细胞平均磷质量为1.46×10^-10 mg，即当水体中微囊藻密度为10⁸个/L时，对水体总磷贡献量约为0.014 6 mg/L；在藻类聚集程度不同的水域中，藻源性磷对总磷的贡献率为2.7% ～ 55.4%。该研究有助于建立蓝藻藻密度与藻源性磷之间的定量关系，探究不同藻类聚集程度的水体中藻源性磷对总磷的贡献，确定了太湖无锡水域中藻源性磷是引起总磷监测值波动的重要因素。

关键词: 太湖藻源性磷蓝藻水华总磷贡献

DOI：DOI：10.3969/j.issn.1674-6732.2025.01.008

分类号:X835

基金项目:江苏省生态环境监测科研基金项目（2302）

Study on the Contribution of Algae-derived Phosphorus to Total Phosphorus in Wuxi Watershed of the Lake Taihu

YANG Zhe¹， ZHU Bingchuan¹， ZHANG Junyi²， SONG Ting¹， DAI Ximing¹， XU Yuan¹， ZHOU Wenli¹， HUA Shengming¹， TA Mingxiang³

1. Jiangsu Wuxi Environmental Monitoring Center， Wuxi， Jiangsu 214121， China； 2. School of Environment and Ecology, Jiangnan University, Wuxi, Jiangsu 214266, China; 3. Northwest A&F University， Xianyang， Shaanxi 712100， China

Abstract:

This study took Wuxi watershed of Lake Taihu as the object to explore the contribution of algae-derived phosphorus to total phosphorus in Lake Taihu and analyze the relationship between the fluctuation of total phosphorus in the water body and the cyanobacterial blooms. By combining the current technical specifications for sampling and analysis of phytoplankton and total phosphorus， this study investigated the composition of algae species， algae density， and phosphorus content in different forms in algae-accumulated areas， and analyzed the contribution of algae-derived phosphorus to total phosphorus in the water body. The results showed that the dominant species of cyanobacterial blooms were Microcystis sp.， and the average phosphorus content of one Microcystis sp. cell was about 1.46×10^-10 mg. Specifically， 10⁸ cells/L of Microcystis spp. would contribute 0.0146 mg/L of phosphorus content for the total phosphorus in water. In water bodies with different degrees of algae aggregation， the contribution rate of algae-derived phosphorus to total phosphorus ranged from 2.7% to 55.4%. This study established the quantitative relationship between algal density and algal phosphorus， explored the contribution of algae-derived phosphorus to total phosphorus in water bodies with different algal concentrations， and confirmed that the algae-derived phosphorus was an important factor causing the fluctuation of total phosphorus value in Wuxi watershed of the Lake Taihu.

Key words: Lake Taihu Algae derived phosphorus Cyanobacterial blooms Total phosphorus Contribution