The effect of artificial forced mixingand oxygenating on the bacterial community succession in the stratified reservoir
ZHANG Han1,2, HUANG Ting-lin1,2, LI Nan1,2, ZHANG Hai-han1,2, QI Yun-zhi3, SI Fan1,2, LU Lin-chao1,2, WANG Chen-xu1,2
1. Shanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. Key Laboratory of Northwest Water Resource, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, China;
3. Xi'an Water Group HeiheJinpen Reservoir Management Company, Xi'an 710401, China
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.
张晗, 黄廷林, 李楠, 张海涵, 齐允之, 司凡, 路林超, 王晨旭. 人工强制混合充氧对分层型水库细菌群落演替的影响[J]. 中国环境科学, 2020, 40(4): 1732-1739.
ZHANG Han, HUANG Ting-lin, LI Nan, ZHANG Hai-han, QI Yun-zhi, SI Fan, LU Lin-chao, WANG Chen-xu. The effect of artificial forced mixingand oxygenating on the bacterial community succession in the stratified reservoir. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(4): 1732-1739.
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