气候变化领域集成服务门户(CCPortal): Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests

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DOI	10.1038/s41586-023-05971-3
	Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests
	Tavares, Julia Valentim; Oliveira, Rafael S.; Mencuccini, Maurizio; Signori-Mueller, Caroline; Pereira, Luciano; Diniz, Francisco Carvalho; Gilpin, Martin; Zevallos, Manuel Marca J.; Yupayccana, Carlos Salas A.; Acosta, Martin; Mullisaca, Flor Perez; Barros, Fernanda de V.; Bittencourt, Paulo; Jancoski, Halina; Scalon, Marina Correa; Marimon, Beatriz S.; Menor, Imma Oliveras; Marimon Jr, Ben Hur; Fancourt, Max; Chambers-Ostler, Alexander; Esquivel-Muelbert, Adriane; Rowland, Lucy; Meir, Patrick; da Costa, Antonio Carlos Lola; Nina, Alex; Sanchez, Jesus M. B.; Tintaya, Jose S.; Chino, Rudi S. C.; Baca, Jean; Fernandes, Leticia; Cumapa, Edwin R. M.; Santos, Joao Antonio R.; Teixeira, Renata; Tello, Ligia; Ugarteche, Maira T. M.; Cuellar, Gina A.; Martinez, Franklin; Araujo-Murakami, Alejandro; Almeida, Everton; da Cruz, Wesley Jonatar Alves; Pasquel, Jhon del Aguila; Aragao, Luis; Baker, Timothy R.; de Camargo, Plinio Barbosa; Brienen, Roel; Castro, Wendeson; Ribeiro, Sabina Cerruto; de Souza, Fernanda Coelho; Cosio, Eric G.; Cardozo, Nallaret Davila; Silva, Richarlly da Costa; Disney, Mathias; Espejo, Javier Silva; Feldpausch, Ted R.; Ferreira, Leandro; Giacomin, Leandro; Higuchi, Niro; Hirota, Marina; Honorio, Euridice; Huasco, Walter Huaraca; Lewis, Simon; Llampazo, Gerardo Flores; Malhi, Yadvinder; Mendoza, Abel Monteagudo; Morandi, Paulo; Moscoso, Victor Chama; Muscarella, Robert; Penha, Deliane; Rocha, Mayda Cecilia; Rodrigues, Gleicy; Ruschel, Ademir R.; Salinas, Norma; Schlickmann, Monique; Silveira, Marcos; Talbot, Joey; Vasquez, Rodolfo; Vedovato, Laura; Vieira, Simone Aparecida; Phillips, Oliver L.; Gloor, Emanuel; Galbraith, David R.
发表日期	2023
ISSN	0028-0836
EISSN	1476-4687
起始页码	111
结束页码	+
卷号	617 期号:7959
英文摘要	Tropical forests face increasing climate risk(1,2), yet our ability to predict their response to climate change is limited by poor understanding of their resistance to water stress. Although xylem embolism resistance thresholds (for example, ?(50)) and hydraulic safety margins (for example, HSM50) are important predictors of drought-induced mortality risk(3-5), little is known about how these vary across Earth's largest tropical forest. Here, we present a pan-Amazon, fully standardized hydraulic traits dataset and use it to assess regional variation in drought sensitivity and hydraulic trait ability to predict species distributions and long-term forest biomass accumulation. Parameters ?(50) and HSM50 vary markedly across the Amazon and are related to average long-term rainfall characteristics. Both ?(50) and HSM50 influence the biogeographical distribution of Amazon tree species. However, HSM50 was the only significant predictor of observed decadal-scale changes in forest biomass. Old-growth forests with wide HSM50 are gaining more biomass than are low HSM(50 )forests. We propose that this may be associated with a growth-mortality trade-off whereby trees in forests consisting of fast-growing species take greater hydraulic risks and face greater mortality risk. Moreover, in regions of more pronounced climatic change, we find evidence that forests are losing biomass, suggesting that species in these regions may be operating beyond their hydraulic limits. Continued climate change is likely to further reduce HSM50 in the Amazon(6,7), with strong implications for the Amazon carbon sink.
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:001002447800019
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/281191
作者单位	University of Leeds; Uppsala University; Universidade Estadual de Campinas; Universidade de Sao Paulo; Autonomous University of Barcelona; Centro de Investigacion Ecologica y Aplicaciones Forestales (CREAF-CERCA); ICREA; University of Exeter; Universidade de Sao Paulo; Universidade Estadual de Campinas; Ulm University; Universidad Nacional de San Antonio Abad del Cusco; Universidade Federal do Acre (UFAC); Universidade de Sao Paulo; Universidade Estadual de Campinas; Universidade do Estado de Mato Grosso; Universidade Federal do Parana; University of Oxford; Centre National de la Recherche Scientifique (CNRS); INRAE; CIRAD; Universite de Montpellier; Institut de Recherche pour le Developpement (IRD); University of Birmingham; University of Edinburgh; Australian National University; Universidade Federal do Para; Pontificia Universidad Catolica del Peru; Universidad Nacional de la Amazonia Peruana; Universidade Federal do Oeste do Para; Universidad Nacional de la Amazonia Peruana; Instituto Nacional de Pesq...
推荐引用方式 GB/T 7714	Tavares, Julia Valentim,Oliveira, Rafael S.,Mencuccini, Maurizio,et al. Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests[J],2023,617(7959).
APA	Tavares, Julia Valentim.,Oliveira, Rafael S..,Mencuccini, Maurizio.,Signori-Mueller, Caroline.,Pereira, Luciano.,...&Galbraith, David R..(2023).Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests.NATURE,617(7959).
MLA	Tavares, Julia Valentim,et al."Basin-wide variation in tree hydraulic safety margins predicts the carbon balance of Amazon forests".NATURE 617.7959(2023).