DOI: 10.1002/2017JG004139
Scopus记录号: 2-s2.0-85042231810
论文题名: Acclimation of Biogenic Volatile Organic Compound Emission From Subarctic Heath Under Long-Term Moderate Warming
作者: Tang J. ; Valolahti H. ; Kivimäenpää M. ; Michelsen A. ; Rinnan R.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 1 起始页码: 95
结束页码: 105
语种: 英语
英文关键词: Arctic
; BVOC
; climate change
; CO2 exchange
; isoprene
; tundra
Scopus关键词: biogenic emission
; carbon dioxide
; climate change
; experimental study
; gas exchange
; isoprene
; long-term change
; monoterpene
; respiration
; subarctic region
; temperature effect
; tundra
; vegetation dynamics
; volatile organic compound
; warming
英文摘要: Biogenic volatile organic compound (BVOC) emissions from subarctic ecosystems have shown to increase drastically in response to a long-term temperature increase of only 2°C. We assessed whether this increase takes place already after 3 years of warming and how the increase changes over time. To test this, we measured BVOC emissions and CO2 fluxes in a field experiment on a subarctic wet heath, where ecosystem plots were subjected to passive warming by open top chambers for 3 (OTC3) or 13 years (OTC13) or were kept as unmanipulated controls. Already after 3 years of moderate temperature increase of 1–2°C, warming increased the emissions of isoprene (five- to sixfold) and monoterpenes (three- to fourfold) from the subarctic heath. The several-fold higher BVOC emissions in the warmed plots are likely a result of increased vegetation biomass and altered vegetation composition as a shift in the species coverage was observed already after 3 years of warming. Warming also increased gross ecosystem production and ecosystem respiration, but the increases were much lower than those for BVOCs. Our results demonstrate that the strong BVOC responses to warming already appeared after 3 years, and the BVOC and CO2 fluxes had acclimated to this warming after 3 years, showing no differences with another 10 years of warming. This finding has important implications for predicting CO2 and BVOC fluxes in subarctic ecosystems. ©2017. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114721
Appears in Collections: 气候减缓与适应
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作者单位: Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Copenhagen, Denmark; Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark; Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
Recommended Citation:
Tang J.,Valolahti H.,Kivimäenpää M.,et al. Acclimation of Biogenic Volatile Organic Compound Emission From Subarctic Heath Under Long-Term Moderate Warming[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(1)