气候变化领域集成服务门户(CCPortal): Disturbance suppresses the aboveground carbon sink in North American boreal forests

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DOI	10.1038/s41558-021-01027-4
	Disturbance suppresses the aboveground carbon sink in North American boreal forests
	Wang J.A.; Baccini A.; Farina M.; Randerson J.T.; Friedl M.A.
发表日期	2021
ISSN	1758678X
英文摘要	Climate change is altering vegetation and disturbance dynamics in boreal ecosystems. However, the aggregate impact of these changes on boreal carbon budgets is not well understood. Here we combined multiple satellite datasets to estimate annual stocks and changes in aboveground biomass (AGB) across boreal northwestern North America. From 1984 to 2014, the 2.82 × 106 km2 study region gained 434 ± 176 Tg of AGB. Fires resulted in losses of 789 ± 48 Tg, which were mostly compensated by post-fire recovery of 642 ± 86 Tg. Timber harvests contributed to losses of 74 ± 5 Tg, which were partly offset by post-harvest recovery of 32 ± 9 Tg. Earth system models overestimated AGB accumulation by a factor of 3 (+1,519 ± 171 Tg), which suggests that these models overestimate the terrestrial carbon sink in boreal ecosystems and highlights the need to improve representation of fire and other disturbance processes in these models. ? 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178807
作者单位	Department of Earth System Science, University of California, Irvine, CA, United States; Department of Earth and Environment, Boston University, Boston, MA, United States; The Woodwell Climate Research Center, Falmouth, MA, United States; Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT, United States
推荐引用方式 GB/T 7714	Wang J.A.,Baccini A.,Farina M.,et al. Disturbance suppresses the aboveground carbon sink in North American boreal forests[J],2021.
APA	Wang J.A.,Baccini A.,Farina M.,Randerson J.T.,&Friedl M.A..(2021).Disturbance suppresses the aboveground carbon sink in North American boreal forests.Nature Climate Change.
MLA	Wang J.A.,et al."Disturbance suppresses the aboveground carbon sink in North American boreal forests".Nature Climate Change (2021).