A large and persistent carbon sink in the world's forests.
The terrestrial carbon sink has been large in recent decades, but its size and location remain uncertain. Using forest inventory data and long-term ecosystem carbon studies, we estimate a total forest sink of 2.4 ± 0.4 petagrams of carbon per year (Pg C year(-1)) globally for 1990 to 2007. We also estimate a source of 1.3 ± 0.7 Pg C year(-1) from tropical land-use change, consisting of a gross tropical deforestation emission of 2.9 ± 0.5 Pg C year(-1) partially compensated by a carbon sink in tropical forest regrowth of 1.6 ± 0.5 Pg C year(-1). Together, the fluxes comprise a net global forest sink of 1.1 ± 0.8 Pg C year(-1), with tropical estimates having the largest uncertainties. Our total forest sink estimate is equivalent in magnitude to the terrestrial sink deduced from fossil fuel emissions and land-use change sources minus ocean and atmospheric sinks.
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Related Subject Headings
- Tropical Climate
- Trees
- General Science & Technology
- Ecosystem
- Conservation of Natural Resources
- Climate Change
- Carbon Sequestration
- Carbon Dioxide
- Carbon
- Biomass
Citation
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Tropical Climate
- Trees
- General Science & Technology
- Ecosystem
- Conservation of Natural Resources
- Climate Change
- Carbon Sequestration
- Carbon Dioxide
- Carbon
- Biomass