A large and persistent carbon sink in the World s forests
- U.S. Department of Agriculture Forest Service
- Peking University
- Woods Hole Oceanographic Institution (WHOI), Woods Hole, MA
- University of Helsinki
- Canadian Forest Service
- University of Leeds, UK
- IIASA, Laxenburg, Austria
- CSIRO Marine and Atmospheric Research
- Laboratoire des Sciences du Climat et de l'Environement, France
- Duke University
- Princeton University
- University of Alaska
- ORNL
The terrestrial carbon (C) sink has been large in recent decades, but its size and location remain uncertain. Using forest inventory data and long-term ecosystem C studies, we estimated a total forest sink of 2.4 0.4 Pg C yr 1 globally for 1990-2007. We also estimated a source of 1.3 0.7 Pg C yr 1 from tropical land-use change, consisting of a gross tropical deforestation emission of 2.9 0.5 Pg C yr 1 partially compensated by a C sink in tropical forest regrowth of 1.6 0.5 Pg C yr 1. Together, the fluxes comprise a net global forest sink of 1.1 0.8 Pg C yr 1, with tropical estimates having the largest uncertainties. This forest sink is equivalent in magnitude to the terrestrial sink deduced from fossil fuel emissions and constraints of ocean and atmospheric sinks.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1022698
- Journal Information:
- Science, Vol. 333, Issue 6045; ISSN 0036--8075
- Country of Publication:
- United States
- Language:
- English
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