生态与农村环境学报2026，Vol.42Issue(5)：622-632,11.DOI:10.19741/j.issn.1673-4831.2025.0217
长荡湖悬浮颗粒物季节变化及其附着细菌群落结构特征研究
Research on Seasonal Variation of Suspended Particulate Matter and Characteristics of Attached Bacterial Com-munity Structure in Changdang Lake
摘要
Abstract
Understanding the seasonal dynamics of suspended particulate matter(SPM)and the response mechanism of the attached bacterial community in Changdang Lake is crucial for clarifying the ecological effects of the"particulate mat-ter-microorganism"interaction in overwater shallow lakes under hydrological fluctuations.In June,August and November 2024,the temporal and spatial variation characteristics of SPM particle size and water ecological environment indicators,as well as the attached bacterial community of SPM in Changdang Lake,were analyzed.The results showed that the medi-an particle size(D50)of SPM in June,August and November ranged from 7.81 to 10.45 μm,651.83 to 884.75 μm,and 6.92 to 48.52 μm,respectively.The overall average chemical oxygen demand(COD),ammonia nitrogen(NH4+-N),total nitrogen(TN)and total phosphorus(TP)in Changdang Lake met the surface water quality standards of Class IV.Correlation analysis indicated that D50 was positively correlated with NH4+-N(P<0.05)and negatively correlated with DO and pH(P<0.01).There were 10 phyla with a proportion greater than 1%in SPM.Among them,Proteobacteria was the highest(29.8%),followed by Cyanobacteria(28.34%)and Bacteroidota(15.69%).Phenylobacterium,HgcI clade and Comamonas were the key species in the network.Among the nitrogen cycling functional genes,DNRA(dissimilatory nitrate reduction to ammonium)genes were dominant,followed by nitrification genes,while the abundance of nitration-re-lated genes was relatively low,indicating that the synthesis of proteins by algae using nitrate plays a dominant role in the nitrogen cycling of the water body in Changdang Lake.The research results provide theoretical basis and technical support for the restoration of water transparency and the regulation of microbial functions in eutrophication control.关键词
浅水湖泊/悬浮颗粒物/粒径/微生物群落/共现网络Key words
shallow lake/suspended particulate matter/particle size/microbial community/co-occurrence network分类
资源环境引用本文复制引用
赵艳阳,汤勇生,张体浪,完颜健飞,张松贺..长荡湖悬浮颗粒物季节变化及其附着细菌群落结构特征研究[J].生态与农村环境学报,2026,42(5):622-632,11.基金项目
2023年度江苏省建设系统科技项目(2023ZD111,2023ZD113) （2023ZD111,2023ZD113）
