气候变化领域集成服务门户(CCPortal): Synergistic effects of four climate change drivers on terrestrial carbon cycling

CCPortal

DOI	10.1038/s41561-020-00657-1
	Synergistic effects of four climate change drivers on terrestrial carbon cycling
	Reich P.B.; Hobbie S.E.; Lee T.D.; Rich R.; Pastore M.A.; Worm K.
发表日期	2020
ISSN	17520894
起始页码	787
结束页码	793
卷号	13 期号:12
英文摘要	Disentangling impacts of multiple global changes on terrestrial carbon cycling is important, both in its own right and because such impacts can dampen or accelerate increases in atmospheric CO2 concentration. Here we report on an eight-year grassland experiment, TeRaCON, in Minnesota, United States, that factorially manipulated four drivers: temperature, rainfall, CO2 and nitrogen deposition. Net primary production increased under warming, elevated CO2 and nitrogen deposition, and decreased under diminished summer rainfall. Treatment combinations that increased net primary production also increased soil CO2 emissions, but less so, and hence ecosystem carbon storage increased overall. Productivity, soil carbon emissions and plant carbon stock responses to each individual factor were influenced by levels of the other drivers, in both amplifying and dampening ways. Percentage increases in productivity, soil carbon emissions and plant carbon stocks in response to two, three or four global changes experienced jointly were generally much greater than those expected based on the effects of each individual driver alone. Multiple global change drivers had a profound combined influence on observed outcomes that would have been poorly predicted by knowledge of each driver alone. If such interacting impacts of multiple global change drivers on carbon cycling occur widely among ecosystems, accurately projecting biosphere responses to multifactorial global changes will remain a major challenge in the decades ahead. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	carbon dioxide; carbon emission; carbon storage; global change; grassland; knowledge; net primary production; nitrogen; rainfall; soil carbon; Minnesota; United States; Matthiola
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206821
作者单位	Department of Forest Resources, University of Minnesota, St Paul, MN, United States; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; Department of Ecology, Evolution, and Behavior, University of Minnesota, St Paul, MN, United States; Department of Biology, University of Wisconsin-Eau Claire, Eau Claire, WI, United States; Smithsonian Environmental Research Center, Edgewater, MD, United States
推荐引用方式 GB/T 7714	Reich P.B.,Hobbie S.E.,Lee T.D.,et al. Synergistic effects of four climate change drivers on terrestrial carbon cycling[J],2020,13(12).
APA	Reich P.B.,Hobbie S.E.,Lee T.D.,Rich R.,Pastore M.A.,&Worm K..(2020).Synergistic effects of four climate change drivers on terrestrial carbon cycling.Nature Geoscience,13(12).
MLA	Reich P.B.,et al."Synergistic effects of four climate change drivers on terrestrial carbon cycling".Nature Geoscience 13.12(2020).