人工强制混合充氧对分层型水库细菌群落演替的影响

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Abstract

To explore the influence of artificial forced mixing and oxygenating on the bacterial community structure, we analyzed the bacterial community structure in Xi'an Jinpen reservoir from August 2018 to April 2019. The results showed that Cyanobacteria、Actinobacteria and Proteobacteria were the dominating bacteriaes in the whole water. The abundance of Cyanobacteria decreased from 11.7%~19.2% to 6.3%~8.9% due to the artificial forced mixing and oxygenating. The abundance of Cyanobacteria decreased from 18.3%、11.7%、19.2% to 8.9%、6.3%、7.9% in surface、middle and bottom water. The difference of the bacteria structure and the dispersion between samples were reduced because of the artificial forced mixing effect. Theabundances of Actinobacteria and Proteobacteria gradually change from "middle > bottom > surface" and "surface > bottom > middle" to be consistent in the surface、middle and bottom water. Thecontent of dissolved oxygen and the abundance of aerobic bacteria were increased due to the artificial forced oxygenation effect at the bottom. The abundances of Polynucleobacter、Methylocystis、Methylobacter increased from 0.06%、0.18%、0.02% to 1.06%、2.20%、1.96%. According to the redundancy analysis, the mainfactors that affected bacterial community composition were the thermal stratification stability,water temperature, DO, TP and TN.

Key words： artificial forced mixing and oxygenating Jinpen reservoir the bacterial community structure influence factors

Received: 25 September 2019

PACS:	X524
	X172

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	Articles by authors
	ZHANG Han
	HUANG Ting-lin
	LI Nan
	ZHANG Hai-han
	QI Yun-zhi
	SI Fan
	LU Lin-chao
	WANG Chen-xu

Cite this article:

ZHANG Han,HUANG Ting-lin,LI Nan等. The effect of artificial forced mixingand oxygenating on the bacterial community succession in the stratified reservoir[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(4): 1732-1739.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I4/1732

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