Post-drought decline of the Amazon carbon sink.
Yan Yang,Sassan Saatchi,Sassan Saatchi,Liang Xu,Liang Xu,Y. Yu,Sungho Choi,Nathan Phillips,Robert E. Kennedy,Michael Keller,Michael Keller,Yuri Knyazikhin,Ranga B. Myneni +12 more
TLDR
The long-term legacy of these droughts with persistent loss of carbon stocks after the 2005 drought is shown, leading to a significant positive climate feedback and exacerbating warming trends.Abstract:
Amazon forests have experienced frequent and severe droughts in the past two decades. However, little is known about the large-scale legacy of droughts on carbon stocks and dynamics of forests. Using systematic sampling of forest structure measured by LiDAR waveforms from 2003 to 2008, here we show a significant loss of carbon over the entire Amazon basin at a rate of 0.3 ± 0.2 (95% CI) PgC yr−1 after the 2005 mega-drought, which continued persistently over the next 3 years (2005–2008). The changes in forest structure, captured by average LiDAR forest height and converted to above ground biomass carbon density, show an average loss of 2.35 ± 1.80 MgC ha−1 a year after (2006) in the epicenter of the drought. With more frequent droughts expected in future, forests of Amazon may lose their role as a robust sink of carbon, leading to a significant positive climate feedback and exacerbating warming trends.read more
Citations
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Hanging by a thread? Forests and drought
TL;DR: Recent progress is examined in understanding of how the future looks for forests growing in a hotter and drier atmosphere.
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Interannual variation of terrestrial carbon cycle: Issues and perspectives
Shilong Piao,Shilong Piao,Xuhui Wang,Kai Wang,Xiangyi Li,Ana Bastos,Josep G. Canadell,Philippe Ciais,Philippe Ciais,Pierre Friedlingstein,Stephen Sitch +10 more
TL;DR: Both improving Earth system models (ESMs) with the progressive understanding on the fast processes manifested at interannual time-scale and expanding carbon cycle observations at broader spatial and longer temporal scales are critical to better prediction on evolution of the carbon-climate system.
Journal ArticleDOI
Ghosts of the past: how drought legacy effects shape forest functioning and carbon cycling
TL;DR: A novel data synthesis finds that legacy effects differ drastically in both size and length across the US depending on if they are identified in tree rings versus gross primary productivity, and emphasises that a holistic view of legacy effects - from tissues to whole forests - will advance understanding of legacy Effects.
Journal ArticleDOI
The role of forest conversion, degradation, and disturbance in the carbon dynamics of Amazon indigenous territories and protected areas
Wayne S. Walker,Seth R. Gorelik,Alessandro Baccini,Jose Luis Aragon-Osejo,Carmen Josse,Chris Meyer,Marcia N. Macedo,Cicero Augusto,Sandra Ríos,Tuntiak Katan,Alana Almeida de Souza,Saul Cuellar,Andres Llanos,Irene Zager,Gregorio Díaz Mirabal,Kylen Solvik,Mary Farina,Paulo Moutinho,Stephan Schwartzman +18 more
TL;DR: A comprehensive accounting of aboveground carbon dynamics inside and outside Amazon protected lands is provided, finding that ITs and PNAs stored more than one-half of the region’s carbon in 2016 but were responsible for just 10% of the net change (−1,290 MtC).
Journal ArticleDOI
Satellite-observed pantropical carbon dynamics
Lei Fan,Lei Fan,Jean-Pierre Wigneron,Philippe Ciais,Jérôme Chave,Martin Brandt,Rasmus Fensholt,Sassan Saatchi,Ana Bastos,Amen Al-Yaari,Koen Hufkens,Koen Hufkens,Yuanwei Qin,Xiangming Xiao,Chi Chen,Ranga B. Myneni,Roberto Fernandez-Moran,Arnaud Mialon,Nemesio Rodriguez-Fernandez,Yann Kerr,Feng Tian,Josep Peñuelas +21 more
TL;DR: Low-frequency L-band passive microwave observations are used to compute a direct and spatially explicit quantification of annual aboveground carbon (AGC) fluxes and show that the tropical net AGC budget was approximately in balance during 2010 to 2017.
References
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A Large and Persistent Carbon Sink in the World’s Forests
Yude Pan,Richard Birdsey,Jingyun Fang,Jingyun Fang,Richard A. Houghton,Pekka E. Kauppi,Werner A. Kurz,Oliver L. Phillips,Anatoly Shvidenko,Simon L. Lewis,Josep G. Canadell,Philippe Ciais,Robert B. Jackson,Stephen W. Pacala,A. David McGuire,Shilong Piao,Aapo Rautiainen,Stephen Sitch,Daniel J. Hayes +18 more
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Supporting Online Material for A Large and Persistent Carbon Sink in the World's Forests
Yude Pan,Richard A. Birdsey,Jingyun Fang,Richard A. Houghton,Pekka E. Kauppi,Werner A. Kurz,Oliver L. Phillips,Anatoly Shvidenko,Simon L. Lewis,Philippe Ciais,Robert B. Jackson,Stephen W. Pacala,A. David McGuire,Shilong Piao,Aapo Rautiainen,Stephen Sitch,Daniel J. Hayes +16 more
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