Methane Production Explained Largely by Water Content in the Heartwood of Living Trees in Upland Forests

doi:10.1146/annurev-arplant-042916-041049

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	Methane Production Explained Largely by Water Content in the Heartwood of Living Trees in Upland Forests
	Wang, Zhi-Ping ; Han, Shi-Jie ; Li, Huan-Long ; Deng, Feng-Dan ; Zheng, Yan-Hai ; Liu, Hai-Feng ; Han, Xing-Guo
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
	2017
卷号	122 期号:10 页码:2479-2489
关键词	tree stem in situ CH4 concentration stem CH4 emission threshold relationship anoxic condition
ISSN号	2169-8953
DOI	10.1146/annurev-arplant-042916-041049
文献子类	Article
英文摘要	Most forests worldwide are located in upland landscapes. Previous studies have mainly focused on ground methane (CH4) flux in upland forests, and living tree stem-based CH4 processes and fluxes are thus relatively poorly understood. This study investigated the relationship between CH4 concentration and water content in the heartwood of living trees in midtemperate, warm temperate, and subtropical upland forests and also measured seasonal changes of in situ stem CH4 flux and the CH4 concentration and water content in the heartwood of Populus davidiana Dode in a warm temperate upland forest. We found that approximately 4-13% of tree stems or approximately 8-31% of tree species had a substantial CH4 concentration of 10,000LL(-1) in their heartwood across the three types of upland forests. The heartwood CH4 concentration was related to water content by a power function. A threshold of water content occurred beyond which CH4 was produced at high levels in the heartwood. The CH4 emissions from the breast height stems of P. davidiana ranged from 202.1 to 331.6gm(-2)h(-1) on a stem surface area basis during July-October 2016 and were significantly linearly correlated with the CH4 concentration or water content in the heartwood throughout the experimental period, but the linear correlation was not significant at daily and monthly scales. Temperature was not a limiting factor for CH4 production during July-October 2016, and thus, most of the CH4 production may be explained by water content in the heartwood of living trees in upland forests.
学科主题	Plant Sciences
电子版国际标准刊号	2169-8961
出版地	WASHINGTON
WOS关键词	TEMPERATE ; RESPIRATION ; EMISSIONS ; WETWOOD ; SPRUCE ; SOILS
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000401335200017
资助机构	National Key Research and Development Program of China [2016YFA0600803] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370493, 41471441]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/22097]
专题	植被与环境变化国家重点实验室
作者单位	1.Henan Univ, Sch Life Sci, Kaifeng, Peoples R China 2.[Li, Huan-Long 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.[Wang, Zhi-Ping 5.Li, Huan-Long 6.Deng, Feng-Dan 7.Zheng, Yan-Hai 8.Liu, Hai-Feng 9.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhi-Ping,Han, Shi-Jie,Li, Huan-Long,et al. Methane Production Explained Largely by Water Content in the Heartwood of Living Trees in Upland Forests[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2017,122(10):2479-2489.
APA	Wang, Zhi-Ping.,Han, Shi-Jie.,Li, Huan-Long.,Deng, Feng-Dan.,Zheng, Yan-Hai.,...&Han, Xing-Guo.(2017).Methane Production Explained Largely by Water Content in the Heartwood of Living Trees in Upland Forests.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,122(10),2479-2489.
MLA	Wang, Zhi-Ping,et al."Methane Production Explained Largely by Water Content in the Heartwood of Living Trees in Upland Forests".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 122.10(2017):2479-2489.