HOUXiaohui,CAOXinxi,LIMengying,et al.Bacterial Community Structure in Urban Lake Sediments and Its Response to Pollutants[J].China Water & Wastewater,2026,42(9):73-78.
城市湖泊沉积物细菌群落结构及对污染物的响应
- Title:
- Bacterial Community Structure in Urban Lake Sediments and Its Response to Pollutants
- Keywords:
- urban lake; sediment; bacteria; environmental factor; community structure
- 摘要:
- 为给城市湖泊沉积物污染治理和生态修复提供重要基础数据，以开封市龙亭湖沉积物为研究对象，分析了沉积物细菌物种多样性和群落丰度、细菌群落结构与物种相关性、细菌群落的主要环境影响因素。结果表明，随着沉积物深度的增加，碳氮磷的输入及沉积过程导致细菌物种多样性和群落丰度显著下降；不同采样点及不同深度沉积物的细菌菌属相对丰度存在显著差异，但优势菌属均为Paenisporosarcina，其相对丰度最高可达70.86%。同一采样点相邻深度沉积物细菌菌属相关性较高，而深度间隔较大的沉积物细菌菌属相关性显著降低；以各采样点最底层的沉积物为参照，细菌菌属相关性显著降低分别发生在L1的100~110 cm、L2的80~90 cm、L3的70~80 cm和L6的50~60 cm深度处，表明沿水流方向沉积物细菌菌属相关性降低现象出现的深度越来越浅，这意味着沿水流方向采样点沉积物形成过程受到外界干扰的时间越来越晚。此外，沉积物深度、有机碳和总磷含量是影响沉积物细菌菌属群落结构的主要因素。
- Abstract:
- In order to provide important basic data for pollution control and ecological restoration of urban lake sediments, the sediments of Longting Lake in Kaifeng City was investigated. The analysis focused on bacterial species diversity and community abundance, bacterial community structure and species correlations, as well as the main environmental factors influencing the bacterial community. The results showed that with increasing sediment depth, the input and deposition of carbon, nitrogen, and phosphorus led to a significant decline in bacterial species diversity and community abundance. The relative abundance of bacterial genera varied significantly in sediments with different sampling points and depths, but the dominant genus was consistently Paenisporosarcina, with its highest relative abundance reaching 70.86%. At the same sampling point, the correlation of bacterial genera was high in adjacent sediment depths, but significantly lower in sediments with large depth intervals. Compared with the deepest sediment layer at each sampling point, a significant decrease in bacterial genus correlation occurred at depths of 100-110 cm at L1, 80-90 cm at L2, 70-80 cm at L3, and 50-60 cm at L6. This indicated that the depth at which the significant decrease in correlation of bacterial genera became shallower along the direction of water flow, meaning that the time when sediment formation at sampling points was affected by external disturbances became progressively later along the flow direction. Furthermore, sediment depth, organic carbon content, and total phosphorus content were identified as the main factors influencing the structure of the dominant bacterial community in the sediments.
相似文献/References:
[1]薛甜,石烜,赵楠,等.污水管网不同汇流条件下沉积物运移分布规律[J].中国给水排水,2023,39(7):107.
XUETian,SHIXuan,ZHAONan,et al.Migration and Distribution of Sediment in Sewage Sewer Network under Different Confluence Conditions[J].China Water & Wastewater,2023,39(9):107.
[2]罗晓萍,姜应和,程静,等.合流制管道沉积物冲刷模拟试验研究[J].中国给水排水,2023,39(11):132.
LUOXiao-ping,JIANGYing-he,CHENGJing,et al.Laboratory-scale Study on Scouring of Sediment in Combined Sewer System[J].China Water & Wastewater,2023,39(9):132.
[3]袁海伟,胡露,钟涛,等.铸铁供水管道沉积物污染富集特征[J].中国给水排水,2025,41(11):85.
YUANHai-wei,HULu,ZHONGTao,et al.Characteristics of Sediment Accumulation in Cast Iron Water Supply Pipelines[J].China Water & Wastewater,2025,41(9):85.
[4]李昕隆,许峥,张敏,等.微生物作用下不同类型沉积物的起动研究[J].中国给水排水,2025,41(11):130.
LIXin-long,XU Zheng,ZHANGMin,et al.Initiation of Different Types of Sediment under Microbial Influence[J].China Water & Wastewater,2025,41(9):130.