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National science review
Feb, 2021;8 (2): nwaa145.

Empirical estimates of regional carbon budgets imply reduced global soil heterotrophic respiration.

Philippe Ciais, Yitong Yao, Thomas Gasser, Alessandro Baccini, Yilong Wang, Ronny Lauerwald, Shushi Peng, Ana Bastos, Wei Li, Peter A Raymond, Josep G Canadell, Glen P Peters, Rob J Andres, Jinfeng Chang, Chao Yue, A Johannes Dolman, Vanessa Haverd, Jens Hartmann, Goulven Laruelle, Alexandra G Konings, Anthony W King, Yi Liu, Sebastiaan Luyssaert, Fabienne Maignan, Prabir K Patra, Anna Peregon, Pierre Regnier, Julia Pongratz, Benjamin Poulter, Anatoly Shvidenko, Riccardo Valentini, Rong Wang, Grégoire Broquet, Yi Yin, Jakob Zscheischler, Bertrand Guenet, Daniel S Goll, Ashley-P Ballantyne, Hui Yang, Chunjing Qiu, Dan Zhu
Author Information
  1. Philippe Ciais: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  2. Yitong Yao: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  3. Thomas Gasser: International Institute for Applied Systems Analysis (IIASA), Laxenburg A-2361, Austria.
  4. Alessandro Baccini: Woods Hole Research Center, Falmouth, MA 02540, USA.
  5. Yilong Wang: The Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100871, China.
  6. Ronny Lauerwald: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  7. Shushi Peng: Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China. ORCID
  8. Ana Bastos: Department für Geographie, Ludwig-Maximilians-Universität München, München D-80333, Germany.
  9. Wei Li: Department of Earth System Science, Tsinghua University, Beijing 100084, China.
  10. Peter A Raymond: Yale School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511, USA.
  11. Josep G Canadell: Global Carbon Project, CSIRO Oceans and Atmosphere, Canberra ACT 2601, Australia.
  12. Glen P Peters: CICERO Center for International Climate Research, Oslo 0349, Norway.
  13. Rob J Andres: Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
  14. Jinfeng Chang: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  15. Chao Yue: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  16. A Johannes Dolman: Department of Earth Science, Vrije Universiteit Amsterdam, Amsterdam HV 1081, The Netherlands.
  17. Vanessa Haverd: CSIRO Oceans and Atmosphere, Canberra ACT 2601, Australia.
  18. Jens Hartmann: Institute for Geology, CEN-Center for Earth System Research and Sustainability, University of Hamburg, Hamburg D-20146, Germany.
  19. Goulven Laruelle: Department Geoscience, Environment & Society, Université Libre de Bruxelles, Bruxelles 1050, Belgium.
  20. Alexandra G Konings: Department of Earth System Science, Stanford University, Stanford, CA 94305, USA.
  21. Anthony W King: Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
  22. Yi Liu: School of Geographical Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China.
  23. Sebastiaan Luyssaert: Department of Ecological Sciences, Vrije Universiteit Amsterdam, Amsterdam HV 1081, The Netherlands.
  24. Fabienne Maignan: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  25. Prabir K Patra: Research Institute for Global Change, JAMSTEC, Kanagawa 236-0001, Japan.
  26. Anna Peregon: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  27. Pierre Regnier: Department Geoscience, Environment & Society, Université Libre de Bruxelles, Bruxelles 1050, Belgium.
  28. Julia Pongratz: Department Geoscience, Environment & Society, Université Libre de Bruxelles, Bruxelles 1050, Belgium.
  29. Benjamin Poulter: NASA Goddard Space Flight Center, Biospheric Sciences Lab., Greenbelt, MD 20771, USA.
  30. Anatoly Shvidenko: International Institute for Applied Systems Analysis (IIASA), Laxenburg A-2361, Austria.
  31. Riccardo Valentini: Department for Innovation in Biological, Agro-food and Forest systems (DIBAF), University of Tuscia, Viterbo 01100, Italy.
  32. Rong Wang: Department of Environmental Science and Engineering, Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Institute of Atmospheric Sciences, Fudan University, Shanghai 200433, China.
  33. Grégoire Broquet: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  34. Yi Yin: Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
  35. Jakob Zscheischler: Climate and Environmental Physics and Oeschger Centre for Climate Change Research, University of Bern, Bern 3012, Switzerland.
  36. Bertrand Guenet: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  37. Daniel S Goll: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  38. Ashley-P Ballantyne: Department of Ecosystem and Conservation Science, University of Montana, Missoula, MT 59801, USA.
  39. Hui Yang: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France. ORCID
  40. Chunjing Qiu: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
  41. Dan Zhu: Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette 91191, France.
PMID: 34691569 DOI: 10.1093/nsr/nwaa145

Abstract

Resolving regional carbon budgets is critical for informing land-based mitigation policy. For nine regions covering nearly the whole globe, we collected inventory estimates of carbon-stock changes complemented by satellite estimates of biomass changes where inventory data are missing. The net land-atmospheric carbon exchange (NEE) was calculated by taking the sum of the carbon-stock change and lateral carbon fluxes from crop and wood trade, and riverine-carbon export to the ocean. Summing up NEE from all regions, we obtained a global 'bottom-up' NEE for net land anthropogenic CO uptake of -2.2 ± 0.6 PgC yr consistent with the independent top-down NEE from the global atmospheric carbon budget during 2000-2009. This estimate is so far the most comprehensive global bottom-up carbon budget accounting, which set up an important milestone for global carbon-cycle studies. By decomposing NEE into component fluxes, we found that global soil heterotrophic respiration amounts to a source of CO of 39 PgC yr with an interquartile of 33-46 PgC yr-a much smaller portion of net primary productivity than previously reported.

Keywords

carbon budget human appropriation of ecosystems soil carbon

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Journal Article
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