Articles | Volume 15, issue 3
https://doi.org/10.5194/esd-15-763-2024
https://doi.org/10.5194/esd-15-763-2024
Research article
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13 Jun 2024
Research article | Highlight paper |  | 13 Jun 2024

The impacts of elevated CO2 on forest growth, mortality, and recovery in the Amazon rainforest

Yitong Yao, Philippe Ciais, Emilie Joetzjer, Wei Li, Lei Zhu, Yujie Wang, Christian Frankenberg, and Nicolas Viovy

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on esd-2024-5', Anonymous Referee #1, 28 Feb 2024
    • AC1: 'Reply on RC1', Yitong Yao, 09 Apr 2024
  • RC2: 'Comment on esd-2024-5', Anonymous Referee #2, 09 Mar 2024
    • AC2: 'Reply on RC2', Yitong Yao, 09 Apr 2024

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Reconsider after major revisions (13 Apr 2024) by Anping Chen
AR by Yitong Yao on behalf of the Authors (13 Apr 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (15 Apr 2024) by Anping Chen
RR by Anonymous Referee #2 (19 Apr 2024)
RR by Anonymous Referee #1 (22 Apr 2024)
ED: Publish as is (22 Apr 2024) by Anping Chen
AR by Yitong Yao on behalf of the Authors (25 Apr 2024)  Manuscript 
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Chief editor
The Amazon rainforest plays a crucial role in global carbon storage, and even a minor destabilization could result in considerable carbon loss. This study uses a process-based model to show that elevated CO2 concentrations have multiple and sometimes contrasting effects on the Amazon forest's carbon dynamics and vulnerability. The study thus provides valuable insights into the rainforest’s evolution in the context of more frequent and intense future climate extremes.
Short summary
Elevated CO2 concentration (eCO2) is critical for shaping the future path of forest carbon uptake, while uncertainties remain about concurrent carbon loss. Here, we found that eCO2 might amplify competition-induced carbon loss, while the extent of drought-induced carbon loss hinges on the balance between heightened biomass density and water-saving benefits. This is the first time that such carbon loss responses to ongoing climate change have been quantified separately over the Amazon rainforest.
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