衬砌对河道底泥细菌群落同质化的影响

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Abstract Taking the North Canal in Beijing-Tianjin-Hebei Basin as research area., a comparative analysis of bacterial community diversity, composition and pattern of environmental factors between the upstream and the mid-down stream samples was carried out. The results showed that engineering projects of bottom and bank in the mid-down stream of the North Canal of Beijing-Tianjin-Hebei Basin promoted the homogeneity of the bacterial community. Comparing to the spatial scaling patterns of upstream samples (0.0002), the value of bacterial communities in the mid-down stream (0.00002) was significantly lower and the distribution pattern of samples in the NMDS plot was more intensive. The homogenized community in the mid-down stream showed the lower richness due to the higher fragment type of the non-abundant species, lower fragment type and lower relative abundance of the abundant species. The analysis of RDA model (P=0.002) showed that the engineering projects, the total phosphorus and the antibiotics of macrolide and tetracycline were the key environmental factors. Engineering projects of bottom and bank was closely related to the diversity of Fibrobacteres, Gracilibacteria, Acidobacteria, Acidothermia and the relative abundance of Fischerbacteria, Kiritimatiellaeota, Actinobacteria, Cyanobacteria.

Key words： the North Canal River sediment the bacterial community lining diversity spatial change

Received: 29 June 2021

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X172

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	Articles by authors
	ZHAO Jun-ying
	ZHANG Wei
	GUO Xiao-yu
	SU Zhen-hua
	DI Yan-ming
	DONG Zhi

Cite this article:

ZHAO Jun-ying,ZHANG Wei,GUO Xiao-yu等. Lining promotes the homogenization of bacterial communities in sediments[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(2): 854-862.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I2/854

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