气候变化领域集成服务门户(CCPortal): Important role of forest disturbances in the global biomass turnover and carbon sinks

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DOI	10.1038/s41561-019-0427-2
	Important role of forest disturbances in the global biomass turnover and carbon sinks
	Pugh T.A.M.; Arneth A.; Kautz M.; Poulter B.; Smith B.
发表日期	2019
ISSN	17520894
EISSN	1752-0908
卷号	12 期号:9 页码:730-+
英文摘要	Forest disturbances that lead to the replacement of whole tree stands are a cornerstone of forest dynamics, with drivers that include fire, windthrow, biotic outbreaks and harvest. The frequency of disturbances may change over the next century with impacts on the age, composition and biomass of forests. However, the disturbance return time, that is, the mean interval between disturbance events, remains poorly characterized across the world’s forested biomes, which hinders the quantification of the role of disturbances in the global carbon cycle. Here we present the global distribution of stand-replacing disturbance return times inferred from satellite-based observations of forest loss. Prescribing this distribution within a vegetation model with a detailed representation of stand structure, we quantify the importance of stand-replacing disturbances for biomass carbon turnover globally over 2001–2014. The return time varied from less than 50 years in heavily managed temperate ecosystems to over 1,000 years in tropical evergreen forests. Stand-replacing disturbances accounted for 12.3% (95% confidence interval, 11.4–13.7%) of the annual biomass carbon turnover due to tree mortality globally, and in 44% of the forested area, biomass stocks are strongly sensitive to changes in the disturbance return time. Relatively small shifts in disturbance regimes in these areas would substantially influence the forest carbon sink that currently limits climate change by offsetting emissions. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
WOS研究方向	Geology
scopus关键词	age; biomass; carbon sink; climate change; community structure; environmental disturbance; evergreen forest; forest ecosystem; forest fire; mortality; return period; stand structure; temperate environment; tropical forest; vegetation dynamics
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/102684
作者单位	School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom; Birmingham Institute of Forest Research, University of Birmingham, Birmingham, United Kingdom; Karlsruhe Institute of Technology, IMK-IFU, Garmisch-Partenkirchen, Germany; Department of Forest Health, Forest Research Institute Baden-Württemberg, Freiburg, Germany; Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
推荐引用方式 GB/T 7714	Pugh T.A.M.,Arneth A.,Kautz M.,et al. Important role of forest disturbances in the global biomass turnover and carbon sinks[J],2019,12(9):730-+.
APA	Pugh T.A.M.,Arneth A.,Kautz M.,Poulter B.,&Smith B..(2019).Important role of forest disturbances in the global biomass turnover and carbon sinks.Nature Geoscience,12(9),730-+.
MLA	Pugh T.A.M.,et al."Important role of forest disturbances in the global biomass turnover and carbon sinks".Nature Geoscience 12.9(2019):730-+.