气候变化领域集成服务门户(CCPortal): Tropical tree mortality has increased with rising atmospheric water stress

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DOI	10.1038/s41586-022-04737-7
	Tropical tree mortality has increased with rising atmospheric water stress
	Bauman, David; Fortunel, Claire; Delhaye, Guillaume; Malhi, Yadvinder; Cernusak, Lucas A.; Bentley, Lisa Patrick; Rifai, Sami W.; Aguirre-Gutierrez, Jesus; Menor, Imma Oliveras; Phillips, Oliver L.; McNellis, Brandon E.; Bradford, Matt; Laurance, Susan G. W.; Hutchinson, Michael F.; Dempsey, Raymond; Santos-Andrade, Paul E.; Ninantay-Rivera, Hugo R.; Chambi Paucar, Jimmy R.; McMahon, Sean M.
发表日期	2022
ISSN	0028-0836
EISSN	1476-4687
起始页码	528
结束页码	+
卷号	608 期号:7923
英文摘要	Evidence exists that tree mortality is accelerating in some regions of the tropics(1,2), with profound consequences for the future of the tropical carbon sink and the global anthropogenic carbon budget left to limit peak global warming below 2 degrees C. However, the mechanisms that may be driving such mortality changes and whether particular species are especially vulnerable remain unclear(3-8). Here we analyse a 49-year record of tree dynamics from 24 old-growth forest plots encompassing a broad climatic gradient across the Australian moist tropics and find that annual tree mortality risk has, on average, doubled across all plots and species over the last 35 years, indicating a potential halving in life expectancy and carbon residence time. Associated losses in biomass were not offset by gains from growth and recruitment. Plots in less moist local climates presented higher average mortality risk, but local mean climate did not predict the pace of temporal increase in mortality risk. Species varied in the trajectories of their mortality risk, with the highest average risk found nearer to the upper end of the atmospheric vapour pressure deficit niches of species. A long-term increase in vapour pressure deficit was evident across the region, suggesting that thresholds involving atmospheric water stress, driven by global warming, may be a primary cause of increasing tree mortality in moist tropical forests.
语种	英语
WOS研究方向	Multidisciplinary Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000797332400006
来源期刊	NATURE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280746
作者单位	Smithsonian Institution; Smithsonian Environmental Research Center; University of Oxford; CIRAD; Centre National de la Recherche Scientifique (CNRS); Universite de Montpellier; Institut de Recherche pour le Developpement (IRD); INRAE; Royal Botanic Gardens, Kew; James Cook University; California State University System; Sonoma State University; University of New South Wales Sydney; University of California System; University of California Berkeley; Naturalis Biodiversity Center; University of Leeds; United States Department of the Interior; United States Geological Survey; Commonwealth Scientific & Industrial Research Organisation (CSIRO); Australian National University; Universidad Nacional de San Antonio Abad del Cusco
推荐引用方式 GB/T 7714	Bauman, David,Fortunel, Claire,Delhaye, Guillaume,et al. Tropical tree mortality has increased with rising atmospheric water stress[J],2022,608(7923).
APA	Bauman, David.,Fortunel, Claire.,Delhaye, Guillaume.,Malhi, Yadvinder.,Cernusak, Lucas A..,...&McMahon, Sean M..(2022).Tropical tree mortality has increased with rising atmospheric water stress.NATURE,608(7923).
MLA	Bauman, David,et al."Tropical tree mortality has increased with rising atmospheric water stress".NATURE 608.7923(2022).