DOI: 10.1038/ngeo2692
论文题名: Large increases in Arctic biogenic volatile emissions are a direct effect of warming
作者: Kramshøj M. ; Vedel-Petersen I. ; Schollert M. ; Rinnan A. ; Nymand J. ; Ro-Poulsen H. ; Rinnan R.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期: 5 起始页码: 349
结束页码: 352
语种: 英语
Scopus关键词: aerosol formation
; biogenic emission
; climate change
; cloud cover
; emission inventory
; high temperature
; light availability
; solar radiation
; tundra
; vegetation dynamics
; volatile organic compound
; warming
; Arctic
英文摘要: Biogenic volatile organic compounds are reactive gases that can contribute to atmospheric aerosol formation. Their emission from vegetation is dependent on temperature and light availability. Increasing temperature, changing cloud cover and shifting composition of vegetation communities can be expected to affect emissions in the Arctic, where the ongoing climate changes are particularly severe. Here we present biogenic volatile organic compound emission data from Arctic tundra exposed to six years of experimental warming or reduced sunlight treatment in a randomized block design. By separately assessing the emission response of the whole ecosystem, plant shoots and soil in four measurements covering the growing season, we have identified that warming increased the emissions directly rather than via a change in the plant biomass and species composition. Warming caused a 260% increase in total emission rate for the ecosystem and a 90% increase in emission rates for plants, while having no effect on soil emissions. Compared to the control, reduced sunlight decreased emissions by 69% for the ecosystem, 61-65% for plants and 78% for soil. The detected strong emission response is considerably higher than observed at more southern latitudes, emphasizing the high temperature sensitivity of ecosystem processes in the changing Arctic. © 2016 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106011
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Universitetsparken 15, Copenhagen, Denmark; Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, ∅ster Voldgade 10, Copenhagen K, Denmark; Department of Food Science, University of Copenhagen, Rolighedsvej 26, Frederiksberg C, Denmark; Greenland Institute of Natural Resources, Kivioq 2, Nuuk, Greenland
Recommended Citation:
Kramshøj M.,Vedel-Petersen I.,Schollert M.,et al. Large increases in Arctic biogenic volatile emissions are a direct effect of warming[J]. Nature Geoscience,2016-01-01,9(5)