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

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Philippe Ciais - , Université de Versailles Saint-Quentin-en-Yvelines, Peking University (Autor:in)
  • Yitong Yao - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Thomas Gasser - , International Institute for Applied Systems Analysis, Laxenburg (Autor:in)
  • Alessandro Baccini - , Woods Hole Research Center (Autor:in)
  • Yilong Wang - , CAS - Institute of Geographical Sciences and Natural Resources Research (Autor:in)
  • Ronny Lauerwald - , Université de Versailles Saint-Quentin-en-Yvelines, Université libre de Bruxelles (ULB) (Autor:in)
  • Shushi Peng - , Peking University (Autor:in)
  • Ana Bastos - , Ludwig-Maximilians-Universität München (LMU) (Autor:in)
  • Wei Li - , Tsinghua University (Autor:in)
  • Peter A. Raymond - , Yale University (Autor:in)
  • Josep G. Canadell - , Commonwealth Scientific & Industrial Research Organisation (CSIRO) (Autor:in)
  • Glen P. Peters - , Centre for International Climate and Environmental Research (CICERO) (Autor:in)
  • Rob J. Andres - , Oak Ridge National Laboratory (Autor:in)
  • Jinfeng Chang - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Chao Yue - , Université de Versailles Saint-Quentin-en-Yvelines, Northwest Agriculture and Forestry University (Autor:in)
  • A. Johannes Dolman - , Vrije Universiteit Amsterdam (VU) (Autor:in)
  • Vanessa Haverd - , Commonwealth Scientific & Industrial Research Organisation (CSIRO) (Autor:in)
  • Jens Hartmann - , Universität Hamburg (Autor:in)
  • Goulven Laruelle - , Université libre de Bruxelles (ULB) (Autor:in)
  • Alexandra G. Konings - , Stanford University (Autor:in)
  • Anthony W. King - , Oak Ridge National Laboratory (Autor:in)
  • Yi Liu - , Nanjing University of Information Science & Technology (Autor:in)
  • Sebastiaan Luyssaert - , Vrije Universiteit Amsterdam (VU) (Autor:in)
  • Fabienne Maignan - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Prabir K. Patra - , Japan Agency for Marine-Earth Science and Technology, Chiba University (Autor:in)
  • Anna Peregon - , Université de Versailles Saint-Quentin-en-Yvelines, RAS - Institute of Soil Science and Agrochemistry, Siberian Branch, Tuvan State University (Autor:in)
  • Pierre Regnier - , Université libre de Bruxelles (ULB) (Autor:in)
  • Julia Pongratz - , Université libre de Bruxelles (ULB), Max-Planck-Institut für Meteorologie (Autor:in)
  • Benjamin Poulter - , NASA Goddard Space Flight Center (Autor:in)
  • Anatoly Shvidenko - , International Institute for Applied Systems Analysis, Laxenburg (Autor:in)
  • Riccardo Valentini - , Università degli Studi della Tuscia, People's Friendship University of Russia (Autor:in)
  • Rong Wang - , Fudan University (Autor:in)
  • Grégoire Broquet - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Yi Yin - , California Institute of Technology (Autor:in)
  • Jakob Zscheischler - , Universität Bern (Autor:in)
  • Bertrand Guenet - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Daniel S. Goll - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Ashley P. Ballantyne - , University of Montana (Autor:in)
  • Hui Yang - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Chunjing Qiu - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Dan Zhu - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)

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 CO2 uptake of -2.2 ± 0.6 PgC yr-1 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 CO2 of 39 PgC yr-1 with an interquartile of 33-46 PgC yr-1 - a much smaller portion of net primary productivity than previously reported.

Details

OriginalspracheEnglisch
Aufsatznummernwaa145
FachzeitschriftNational science review
Jahrgang8
Ausgabenummer2
PublikationsstatusVeröffentlicht - 1 Feb. 2021
Peer-Review-StatusJa
Extern publiziertJa

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • Carbon budget, human appropriation of ecosystems, soil carbon