Abstract：Using high-throughput sequencing, we investigated the diversity, structure and function of water and sediment microbial community in the Chaobai River, and discussed the difference in the vertical distribution pattern between Chaobai River and natural river. The results showed that the microbial communities in water and sediment not only had obvious distribution boundaries and ranges in the NMDS, but also the richness, evenness and comprehensive diversity index of the microbial communities in water were significantly lower than those in sediment. Proteobacteria and cyanobacteria were dominant phyla and subdominant phyla in water and sediments, respectively, and their relative abundance in water was significantly higher than that in sediments. Functions related to the light reaction, represented by chloroplasts, had a higher abundance in the water. In contrast, sulfur_respiration, a function related to the sulphur cycle, and methanogenesis, a function related to methane production, were highly abundant in sediments. The solid-liquid phase exchange process resulted in bacteria in the following sediment and water being more diverse and of similar composition compared to natural rivers. Cyanobacteria were encouraged to survive and grow in sediments due to the high ability of water and sediment to exchange materials. Therefore, the incubation process of pathogenic microorganisms in solid phase can be effectively controlled by managing the input of pathogenic microorganisms in reclaimed water supply, thus reducing the secondary release risk of pathogenic microorganisms in the river.
张伟, 王敏, 郭逍宇. 典型城市河流上覆水和沉积物细菌群落分析[J]. 中国环境科学, 2023, 43(7): 3688-3695.
ZHANG Wei, WANG Min, GUO Xiao-yu. Characteristic analysis of bacterial community in water and sediment in typical urban rivers. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(7): 3688-3695.
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