祁连山多年冻土区甲烷通量与甲烷微生物群落组成的关系

毛楠; 刘桂民; 李莉莎; 李小明; 张博; 徐海燕; 吴晓东

doi:10.3799/dqkx.2021.037

Volume 47 Issue 2

Feb. 2022

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Mao Nan, Liu Guimin, Li Lisha, Li Xiaoming, Zhang Bo, Xu Haiyan, Wu Xiaodong, 2022. Methane Fluxes and Their Relationships with Methane-Related Microbes in Permafrost Regions of the Qilian Mountains. Earth Science, 47(2): 556-567. doi: 10.3799/dqkx.2021.037

Citation:

Mao Nan, Liu Guimin, Li Lisha, Li Xiaoming, Zhang Bo, Xu Haiyan, Wu Xiaodong, 2022. Methane Fluxes and Their Relationships with Methane-Related Microbes in Permafrost Regions of the Qilian Mountains. Earth Science, 47(2): 556-567. doi: 10.3799/dqkx.2021.037

Citation:

Mao Nan, Liu Guimin, Li Lisha, Li Xiaoming, Zhang Bo, Xu Haiyan, Wu Xiaodong, 2022. Methane Fluxes and Their Relationships with Methane-Related Microbes in Permafrost Regions of the Qilian Mountains. Earth Science, 47(2): 556-567. doi: 10.3799/dqkx.2021.037

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Methane Fluxes and Their Relationships with Methane-Related Microbes in Permafrost Regions of the Qilian Mountains

doi: 10.3799/dqkx.2021.037

Mao Nan^{1, 2
,},
Liu Guimin^{1
,
,},
Li Lisha¹,
Li Xiaoming¹,
Zhang Bo¹,
Xu Haiyan¹,
Wu Xiaodong²

1.
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
2.
Cryosphere Research Station on the Qinghai-Tibet Plateau, State Key Laboratory of Cryospheric Science, Northwest Institute of the Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 2021-10-11
Publish Date: 2022-02-25

Abstract

Abstract

Global warming may cause the decomposition of organic carbon in permafrost regions and release methane (CH₄) into the atmosphere, while the correlation between methane fluxes in permafrost regions and the structure of methane-related microbes and the abundance of functional genes remains unclear. In this study, we selected the permafrost region of the Qilian Mountains in the northern Qinghai-Tibet Plateau, and the field work was conducted from June 2019 to January 2020. The CH₄ fluxes were measured at different altitudes using static chamber-gas chromatography. The soil physical and chemical variables and abundances of CH₄ function genes were analyzed. The results show that the methane fluxes largely increased with the altitude. It appeared as a source at 4 100 m and 3 900 m, while other altitude areas appear as carbon sinks. The soil moisture content, conductivity and mcrA gene abundance were positively correlated with CH₄ fluxes. The results showed that CH₄ flux at different altitudes in the permafrost regions of Qilian Mountains were affected by soil moisture content and mcrA gene abundance, while organic carbon content mainly affected microbial diversity.
- permafrost,
- methane flux,
- functional gene,
- microbes,
- environmental geology

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Methane Fluxes and Their Relationships with Methane-Related Microbes in Permafrost Regions of the Qilian Mountains

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