气候变化领域集成服务门户(CCPortal): Extensive atmospheric methane consumption by alpine forests on Tibetan Plateau

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DOI	10.1016/j.agrformet.2023.109589
	Extensive atmospheric methane consumption by alpine forests on Tibetan Plateau
	Qu, Songbo; Xu-Ri; Yu, Jiaoneng; Borjigidai, Almaz
发表日期	2023
ISSN	0168-1923
EISSN	1873-2240
卷号	339
英文摘要	The uptake rates of methane (CH4) in alpine regions remain highly uncertain. Southeast Tibet holds one of the highest alpine forest ecosystems worldwide, which provides us with an ideal experimental site for CH4 uptake rates observation. Therefore, we conducted a two-year observation from August 2019 to July 2021 at an alpine forest site to collect CH4 uptake data with minute time resolution. Our findings showed that alpine forest ecosystem consumed 5.06 kg ha-1 yr-1 CH4 which was higher than previous estimations made by the process -based models. Soil temperature was an important positive controller of CH4 consumption when soil volumetric water content (% VWC) remained lower than 15% but had no effect on CH4 consumption when VWC exceeded 15%. Soil moisture exerted strong negative control on CH4 consumption when soil temperature was greater than 2 degrees C. Our results underscore the crucial role that alpine forest CH4 uptake plays in maintaining the CH4 balance of the Tibetan Plateau and the environmental tipping point with this minute scale observation, which imply the alpine forest to be a CH4 sink with rising temperature in the future.
关键词	CH4 consumption Tibetan Plateau Alpine forest Greenhouse gases High time-resolution observation
英文关键词	NITROUS-OXIDE FLUXES; IN-SITU MEASUREMENTS; SOIL; CH4; EMISSIONS; MODEL; N2O; TEMPERATURE; OXIDATION; WETLANDS
WOS研究方向	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001031801000001
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283604
作者单位	Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Qu, Songbo,Xu-Ri,Yu, Jiaoneng,et al. Extensive atmospheric methane consumption by alpine forests on Tibetan Plateau[J]. 中国科学院青藏高原研究所,2023,339.
APA	Qu, Songbo,Xu-Ri,Yu, Jiaoneng,&Borjigidai, Almaz.(2023).Extensive atmospheric methane consumption by alpine forests on Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,339.
MLA	Qu, Songbo,et al."Extensive atmospheric methane consumption by alpine forests on Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 339(2023).