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.
Bacterial Community Structure in Urban Lake Sediments and Its Response to Pollutants
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第42卷
Number:
第9期
Page:
73-78
Column:
Date of publication:
2026-05-01
- Keywords:
- urban lake; sediment; bacteria; environmental factor; community structure
- 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.
Last Update:
2026-05-01