globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2008901117
论文题名:
Separating direct and indirect effects of rising temperatures on biogenic volatile emissions in the Arctic
作者: Rinnan R.; Iversen L.L.; Tang J.; Vedel-Petersen I.; Schollert M.; Schurgers G.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:51
起始页码: 32476
结束页码: 32483
语种: 英语
英文关键词: Climate change ; Ecosystem modelling ; Ecosystem-atmosphere interactions ; Vegetation change
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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163889
Appears in Collections:气候变化与战略

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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 Permafrost (CENPERM), University of Copenhagen, Copenhagen K, DK-1350, Denmark, Systems Ecology Section, Department of Ecological Science, Vrije Universiteit Amsterdam, Amsterdam, 1081 HV, Netherlands; Schurgers, G., Center for Permafrost (CENPERM), University of Copenhagen, Copenhagen K, DK-1350, Denmark, Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen K, DK-1350, Denmark

Recommended Citation:
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]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(51)
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