气候变化领域集成服务门户(CCPortal): Separating direct and indirect effects of rising temperatures on biogenic volatile emissions in the Arctic

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DOI	10.1073/pnas.2008901117
	Separating direct and indirect effects of rising temperatures on biogenic volatile emissions in the Arctic
	Rinnan R.; Iversen L.L.; Tang J.; Vedel-Petersen I.; Schollert M.; Schurgers G.
发表日期	2020
ISSN	0027-8424
起始页码	32476
结束页码	32483
卷号	117 期号:51
英文摘要	Volatile organic compounds (VOCs) are released from biogenic sources in a temperature-dependent manner. Consequently, Arctic ecosystems are expected to greatly increase their VOC emissions with ongoing climate warming, which is proceeding at twice the rate of global temperature rise. Here, we show that ongoing warming has strong, increasing effects on Arctic VOC emissions. Using a combination of statistical modeling on data from several warming experiments in the Arctic tundra and dynamic ecosystem modeling, we separate the impacts of temperature and soil moisture into direct effects and indirect effects through vegetation composition and biomass alterations. The indirect effects of warming on VOC emissions were significant but smaller than the direct effects, during the 14-y model simulation period. Furthermore, vegetation changes also cause shifts in the chemical speciation of emissions. Both direct and indirect effects result in large geographic differences in VOC emission responses in the warming Arctic, depending on the local vegetation cover and the climate dynamics. Our results outline complex links between local climate, vegetation, and ecosystem-atmosphere interactions, with likely local-to-regional impacts on the atmospheric composition. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Climate change; Ecosystem modelling; Ecosystem-atmosphere interactions; Vegetation change
语种	英语
scopus关键词	volatile organic compound; air pollution; Arctic; arctic tundra; Article; atmosphere; biomass; chemical analysis; climate warming; controlled study; ecosystem; environmental impact; environmental temperature; geographic distribution; priority journal; simulation; soil moisture; statistical model; vegetation dynamics
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160185
作者单位	Rinnan, R., Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Copenhagen O, DK-2100, Denmark, Center for Permafrost (CENPERM), University of Copenhagen, Copenhagen K, DK-1350, Denmark; Iversen, L.L., Center for Permafrost (CENPERM), University of Copenhagen, Copenhagen K, DK-1350, Denmark, Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720, United States; Tang, J., Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Copenhagen O, DK-2100, Denmark, Center for Permafrost (CENPERM), University of Copenhagen, Copenhagen K, DK-1350, Denmark, Department of Physical Geography and Ecosystem Science, Lund University, Lund, SE-22362, Sweden; Vedel-Petersen, I., Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Copenhagen O, DK-2100, Denmark; Schollert, M., Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Copenhagen O, DK-2100, Denmark, Center for Perm...
推荐引用方式 GB/T 7714	Rinnan R.,Iversen L.L.,Tang J.,et al. Separating direct and indirect effects of rising temperatures on biogenic volatile emissions in the Arctic[J],2020,117(51).
APA	Rinnan R.,Iversen L.L.,Tang J.,Vedel-Petersen I.,Schollert M.,&Schurgers G..(2020).Separating direct and indirect effects of rising temperatures on biogenic volatile emissions in the Arctic.Proceedings of the National Academy of Sciences of the United States of America,117(51).
MLA	Rinnan R.,et al."Separating direct and indirect effects of rising temperatures on biogenic volatile emissions in the Arctic".Proceedings of the National Academy of Sciences of the United States of America 117.51(2020).