气候变化领域集成服务门户(CCPortal): CH4 uptake along a successional gradient in temperate alpine soils

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DOI	10.1007/s10533-019-00630-0
	CH4 uptake along a successional gradient in temperate alpine soils
	Brachmann C.G.; Hernandez-Ramirez G.; Hik D.S.
发表日期	2020
ISSN	1682563
卷号	147 期号:2
英文摘要	The effects of climate change appear to be amplified in mountains compared with lowland areas, with rapid changes in plant community composition, soil properties, and increased substrate for biological development following retreat of glaciers. Associated soil gaseous fluxes in alpine ecosystems contribute to the global balance of greenhouse gases, but methane and carbon dioxide soil fluxes and their controls are not well known. We used a dynamic closed-chamber method to measure methane and carbon dioxide fluxes along a successional gradient during the peak growing season in the North Selkirk Mountains, British Columbia, Canada. Soil physico-chemical properties, vegetation cover, and topographic variables were quantified to determine mechanisms influencing these fluxes. Mean methane uptake ranged from − 155 µg CH4-C m− 2 h−1 in well vegetated sites to zero in recently deglaciated terrain. Soil total carbon (TC) and water content were the primary drivers of methane uptake. Sites with TC greater than 4% and moisture below 0.22 water fraction by volume (w.f.v) corresponded to the strongest methane sinks. Increased vegetation cover and relatively drier soil conditions, anticipated with future climate change, suggest that methane uptake may increase in these alpine ecosystems. © 2020, Springer Nature Switzerland AG.
英文关键词	Alpine; Columbia mountains; Deglaciated terrain; Methane; Soil fluxes
学科领域	alpine environment; carbon dioxide; carbon dioxide enrichment; carbon flux; deglaciation; growing season; methane; plant community; soil moisture; temperate environment; British Columbia; Canada; Columbia Mountains; Selkirk Mountains
语种	英语
scopus关键词	alpine environment; carbon dioxide; carbon dioxide enrichment; carbon flux; deglaciation; growing season; methane; plant community; soil moisture; temperate environment; British Columbia; Canada; Columbia Mountains; Selkirk Mountains
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/120392
作者单位	Department of Biological Sciences, University of Alberta, Edmonton, Canada; Department of Renewable Resources, University of Alberta, Edmonton, Canada; Department of Biological Sciences, Simon Fraser University, Burnaby, Canada; Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden
推荐引用方式 GB/T 7714	Brachmann C.G.,Hernandez-Ramirez G.,Hik D.S.. CH4 uptake along a successional gradient in temperate alpine soils[J],2020,147(2).
APA	Brachmann C.G.,Hernandez-Ramirez G.,&Hik D.S..(2020).CH4 uptake along a successional gradient in temperate alpine soils.Biogeochemistry,147(2).
MLA	Brachmann C.G.,et al."CH4 uptake along a successional gradient in temperate alpine soils".Biogeochemistry 147.2(2020).