globalchange  > 气候变化事实与影响
DOI: 10.1002/2015GB005133
Scopus记录号: 2-s2.0-84978081640
论文题名:
Amazon forest response to repeated droughts
作者: Feldpausch T; R; , Phillips O; L; , Brienen R; J; W; , Gloor E; , Lloyd J; , Lopez-Gonzalez G; , Monteagudo-Mendoza A; , Malhi Y; , Alarcón A; , Álvarez Dávila E; , Alvarez-Loayza P; , Andrade A; , Aragao L; E; O; C; , Arroyo L; , Aymard C; G; A; , Baker T; R; , Baraloto C; , Barroso J; , Bonal D; , Castro W; , Chama V; , Chave J; , Domingues T; F; , Fauset S; , Groot N; , Honorio Coronado E; , Laurance S; , Laurance W; F; , Lewis S; L; , Licona J; C; , Marimon B; S; , Marimon-Junior B; H; , Mendoza Bautista C; , Neill D; A; , Oliveira E; A; , Oliveira dos Santos C; , Pallqui Camacho N; C; , Pardo-Molina G; , Prieto A; , Quesada C; A; , Ramírez F; , Ramírez-Angulo H; , Réjou-Méchain M; , Rudas A; , Saiz G; , Salomão R; P; , Silva-Espejo J; E; , Silveira M; , ter Steege H; , Stropp J; , Terborgh J; , Thomas-Caesar R; , van der Heijden G; M; F; , Vásquez Martinez R; , Vilanova E; , Vos V; A
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期:7
起始页码: 964
结束页码: 982
语种: 英语
英文关键词: carbon ; forest productivity ; precipitation ; tree mortality ; vegetation dynamics ; water deficit
Scopus关键词: biological production ; biomass allocation ; climate change ; community response ; drought ; forest dynamics ; growth form ; growth rate ; mortality ; phytomass ; precipitation (climatology) ; spatiotemporal analysis ; water availability ; Amazon Basin ; Amazon River ; Amazonia
英文摘要: The Amazon Basin has experienced more variable climate over the last decade, with a severe and widespread drought in 2005 causing large basin-wide losses of biomass. A drought of similar climatological magnitude occurred again in 2010; however, there has been no basin-wide ground-based evaluation of effects on vegetation. We examine to what extent the 2010 drought affected forest dynamics using ground-based observations of mortality and growth from an extensive forest plot network. We find that during the 2010 drought interval, forests did not gain biomass (net change: −0.43 Mg ha−1, confidence interval (CI): −1.11, 0.19, n = 97), regardless of whether forests experienced precipitation deficit anomalies. This contrasted with a long-term biomass sink during the baseline pre-2010 drought period (1998 to pre-2010) of 1.33 Mg ha−1 yr−1 (CI: 0.90, 1.74, p < 0.01). The resulting net impact of the 2010 drought (i.e., reversal of the baseline net sink) was −1.95 Mg ha−1 yr−1 (CI:−2.77, −1.18; p < 0.001). This net biomass impact was driven by an increase in biomass mortality (1.45 Mg ha−1 yr−1 CI: 0.66, 2.25, p < 0.001) and a decline in biomass productivity (−0.50 Mg ha−1 yr−1, CI:−0.78, −0.31; p < 0.001). Surprisingly, the magnitude of the losses through tree mortality was unrelated to estimated local precipitation anomalies and was independent of estimated local pre-2010 drought history. Thus, there was no evidence that pre-2010 droughts compounded the effects of the 2010 drought. We detected a systematic basin-wide impact of the 2010 drought on tree growth rates across Amazonia, which was related to the strength of the moisture deficit. This impact differed from the drought event in 2005 which did not affect productivity. Based on these ground data, live biomass in trees and corresponding estimates of live biomass in lianas and roots, we estimate that intact forests in Amazonia were carbon neutral in 2010 (−0.07 Pg C yr−1 CI:−0.42, 0.23), consistent with results from an independent analysis of airborne estimates of land-atmospheric fluxes during 2010. Relative to the long-term mean, the 2010 drought resulted in a reduction in biomass carbon uptake of 1.1 Pg C, compared to 1.6 Pg C for the 2005 event. ©2016. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77833
Appears in Collections:气候变化事实与影响

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作者单位: Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; School of Geography, University of Leeds, Leeds, United Kingdom; Department of Life Sciences, Imperial College London, Ascot, United Kingdom; School of Marine and Tropical Biology, James Cook University, Cairns, QLD, Australia; Universidad Nacional San Antonio Abad del Cusco, Cusco, Peru; Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, United Kingdom; Instituto Boliviano de Investigación Forestal, Santa Cruz de la Sierra, Bolivia; Fundación Con-Vida, Medellín, Colombia; Center for Tropical Conservation, Duke University, Durham, NC, United States; National Institute for Research in Amazonia, Manaus, Brazil; National Institute for Space Research, São Paulo, Brazil; Museo de Historia Natural Noel Kempff Mercado, Universidad Autonóma Gabriel René Moreno, Santa Cruz de la Sierra, Bolivia; UNELLEZ-Guanare, Programa de Ciencias del Agro y el Mar, Herbario Universitario (PORT), Guanare, Venezuela; International Center for Tropical Botany, Department of Biological Sciences, Florida International University, Miami, FL, United States; INRA, UMR Ecologie des Forêts de Guyane, Kourou, French Guiana; Universidade Federal do Acre, Rio Branco, Brazil; INRA, UMR 1137 “Ecologie et Ecophysiologie Forestiere”, Champenoux, France; Graduate Program in Ecology and the Management of Natural Resources, Acre Federal University, Rio Branco, AC, Brazil; Université Paul Sabatier CNRS, UMR 5174 Evolution et Diversité Biologique, Toulouse, France; Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil; Centre for Tropical Environmental and Sustainability Science and College of Science and Engineering, James Cook University, Cairns, QLD, Australia; Department of Geography, University College London, London, United Kingdom; Universidade do Estado de Mato Grosso, Nova Xavantina, Brazil; FOMABO, Manejo Forestal en las Tierras Tropicales de Bolivia, Sacta, Bolivia; Facultad de Ingeniería Ambiental, Universidad Estatal Amazónica, Puyo, Ecuador; Universidad Autonoma del Beni, Campus Universitario, Riberalta, Bolivia; Doctorado Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, Colombia; Universidad Nacional de la Amazonía Peruana, Iquitos, Peru; Facultad de Ciencias Forestales y Ambientales, Universidad de Los Andes, Mérida, Venezuela; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Garmisch-Partenkirchen, Germany; Museu Paraense Emílio Goeldi, Belém, Brazil; Naturalis Biodiversity Center, Leiden, Netherlands; Institute of Biological and Health Sciences, Federal University of Alagoas, Maceió, Brazil; Iwokrama International Centre for Rainforest Conservation and Development, Georgetown, Guyana; School of Geography, University of Nottingham, Nottingham, United Kingdom; Jardín Botánico de Missouri, Prolongacion Bolognesi Mz.e, Pasco, Peru; Instituto de Investigaciones para el Desarrollo Forestal, Universidad de Los Andes, Mérida, Venezuela; Universidad Autónoma del Beni, Riberalta, Bolivia; Centro de Investigación y Promoción del Campesinado Norte Amazónico, Riberalta, Bolivia

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Feldpausch T,R,, Phillips O,et al. Amazon forest response to repeated droughts[J]. Global Biogeochemical Cycles,2016-01-01,30(7)
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