气候变化领域集成服务门户(CCPortal): Pulse labelling of deep soil layers in forest with 13CH4: testing a new method for tracing methane in the upper horizons, understorey vegetation and tree stems using laser-based spectrometry

CCPortal

DOI	10.1007/s10533-021-00775-x
	Pulse labelling of deep soil layers in forest with 13CH4: testing a new method for tracing methane in the upper horizons, understorey vegetation and tree stems using laser-based spectrometry
	Plain C.; Epron D.
发表日期	2021
ISSN	1682563
起始页码	215
结束页码	222
卷号	153 期号:2
英文摘要	Methane emissions from plants in wetlands are mainly due to internal transport, from the anoxic soil layers where methane is produced, to the atmosphere. This pathway has not yet been clearly demonstrated for upland forest vegetation, where methane can be produced in deep soil layers. We developed a new method to trace methane transfer from the deep soil. We conducted a 13CH4 pulse labelling at 40-cm soil depth and then monitored 13CH4 in the upper horizons, at the soil surface (with or without understorey vegetation) and emitted by tree stems until the total disappearance of the labelled gas. Most of the injected 13CH4 was oxidized in the soil despite high soil water content. The understorey vegetation did not contribute to 13CH4 emission by the soil. We prove that tree stems can emit methane produced in an upland forest soil, even when the said soil is a net methane sink. We conclude that pulse labelling with 13CH4 and tracing by laser-based spectrometry is a promising tool approach to study the transport of methane from production to emission. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
英文关键词	Greenhouse gas; Laser-based spectrometry; Methane diffusion; Soil methane oxidation; Stable isotopes
语种	英语
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184613
作者单位	Université de Lorraine, AgroParisTech, INRAE, UMR Silva, Nancy, 54000, France; Graduate School of Agriculture, Laboratory of Forest Hydrology, Kyoto University, Kyoto, 606-8502, Japan
推荐引用方式 GB/T 7714	Plain C.,Epron D.. Pulse labelling of deep soil layers in forest with 13CH4: testing a new method for tracing methane in the upper horizons, understorey vegetation and tree stems using laser-based spectrometry[J],2021,153(2).
APA	Plain C.,&Epron D..(2021).Pulse labelling of deep soil layers in forest with 13CH4: testing a new method for tracing methane in the upper horizons, understorey vegetation and tree stems using laser-based spectrometry.Biogeochemistry,153(2).
MLA	Plain C.,et al."Pulse labelling of deep soil layers in forest with 13CH4: testing a new method for tracing methane in the upper horizons, understorey vegetation and tree stems using laser-based spectrometry".Biogeochemistry 153.2(2021).