神农架大九湖泥炭湿地甲烷通量特征及其与土壤微生物群落组成的关系

谌佳伟; 葛继稳; 冯亮; 周颖; 甘娟; 李永福; 张志麒

doi:10.3799/dqkx.2019.289

Volume 45 Issue 3

Mar. 2020

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Article Navigation > Earth Science > 2020 > 45(3): 1082-1092

Chen Jiawei, Ge Jiwen, Feng Liang, Zhou Ying, Gan Juan, Li Yongfu, Zhang Zhiqi, 2020. Methane Flux Characteristics and Its Relationship with Soil Microbial Community Composition of Dajiuhu Peatland in Shennongjia. Earth Science, 45(3): 1082-1092. doi: 10.3799/dqkx.2019.289

Citation:

Chen Jiawei, Ge Jiwen, Feng Liang, Zhou Ying, Gan Juan, Li Yongfu, Zhang Zhiqi, 2020. Methane Flux Characteristics and Its Relationship with Soil Microbial Community Composition of Dajiuhu Peatland in Shennongjia. Earth Science, 45(3): 1082-1092. doi: 10.3799/dqkx.2019.289

Citation:

Chen Jiawei, Ge Jiwen, Feng Liang, Zhou Ying, Gan Juan, Li Yongfu, Zhang Zhiqi, 2020. Methane Flux Characteristics and Its Relationship with Soil Microbial Community Composition of Dajiuhu Peatland in Shennongjia. Earth Science, 45(3): 1082-1092. doi: 10.3799/dqkx.2019.289

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Methane Flux Characteristics and Its Relationship with Soil Microbial Community Composition of Dajiuhu Peatland in Shennongjia

doi: 10.3799/dqkx.2019.289

Chen Jiawei^{1,2,3
,
,},
Ge Jiwen^{1,2,3
,
,
,},
Feng Liang^2,3,
Zhou Ying⁴,
Gan Juan⁵,
Li Yongfu⁶,
Zhang Zhiqi⁷

1.
Laboratory of Basin Hydrological and Wetland Eco-Restoration, China University of Geosciences, Wuhan 430074, China
2.
Hubei Key Laboratory of Wetland Evolution and Ecological Restoration, China University of Geosciences, Wuhan 430074, China
3.
Institute of Ecology and Environmental Sciences, China University of Geosciences, Wuhan 430074, China
4.
Wuhan No.6 Shangzhi Middle School, Wuhan 430014, China
5.
Wuhan Wetland Institute of Ecology and Environmental Sciences, Wuhan 430074, China
6.
Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
7.
Shennongjia National Park Administration Bureau, Shennongjia Forestry District 442417, China

Received Date: 2019-08-24
Publish Date: 2020-03-15

Abstract

Abstract

Although the methane flux characteristics and the composition of soil microbial community in the Dajiuhu peatland in Shennongjia have been studied to some extent, there are few studies on the relationship and impact of microbial community and methane flux. Using eddy covariance method and high throughput sequencing technology, methane flux and structure of microorganism were investigated at the Dajiuhu peatland from March 2016 to February 2017. The results show that the Dajiuhu peatland was the source of CH₄ during the study period, with an annual total discharge of 5 566.27 mg·m^-2 and a daily average emission rate of 10.96 nmol·m^-2·s^-1. The average fluxes of the four seasons were 12.06, 22.47, 3.02, 2.92 nmol·m^-2·s^-1, respectively. The dominant bacterium in the study area were Crenarchaecta (54.6%), Euryarchaeota (18.9%), and Acidobacteria (12.6%). Univariate analysis was performed on the Shannon index for different season samples with a p value of 0.000 127. The results showed that the change of the monthly methane emission flux during this year had clearly inverted " U" type curve, and CH₄ emission rate in summer was the highest which was the lowest in winter. There were significant differences in soil microbial composition between different seasons. There was a strong positive correlation between the microbial community composition and the methane emission flux during summer and a strong negative correlation during winter. Abundance of Parcubacteria showed a significant positive correlation with CH₄ flux, while abundance of Crenarchaecta showed a significant negative correlation with CH₄ flux.
- peatland,
- eddy covariance,
- methane flux,
- microbial community composition,
- Dajiuhu,
- ecology

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