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Estimated carbon dioxide emissions from tropical deforestation improved by carbon-density maps


Deforestation contributes 6–17% of global anthropogenic CO2 emissions to the atmosphere1. Large uncertainties in emission estimates arise from inadequate data on the carbon density of forests2 and the regional rates of deforestation. Consequently there is an urgent need for improved data sets that characterize the global distribution of aboveground biomass, especially in the tropics. Here we use multi-sensor satellite data to estimate aboveground live woody vegetation carbon density for pan-tropical ecosystems with unprecedented accuracy and spatial resolution. Results indicate that the total amount of carbon held in tropical woody vegetation is 228.7 Pg C, which is 21% higher than the amount reported in the Global Forest Resources Assessment 2010 (ref. 3). At the national level, Brazil and Indonesia contain 35% of the total carbon stored in tropical forests and produce the largest emissions from forest loss. Combining estimates of aboveground carbon stocks with regional deforestation rates4 we estimate the total net emission of carbon from tropical deforestation and land use to be 1.0 Pg C yr−1 over the period 2000–2010—based on the carbon bookkeeping model. These new data sets of aboveground carbon stocks will enable tropical nations to meet their emissions reporting requirements (that is, United Nations Framework Convention on Climate Change Tier 3) with greater accuracy.

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Figure 1: Carbon contained in the aboveground live woody vegetation of tropical America, Africa and Asia (Australia excluded).
Figure 2: Comparison of national aboveground carbon stock estimates.
Figure 3: Annual net emissions of carbon from land-use change in the tropics.


  1. Van Der Werf, G. R. et al. CO2 emissions from forest loss. Nature Geosci. 2, 737–738 (2009).

    Article  CAS  Google Scholar 

  2. Houghton, R. A., Hall, F. & Goetz, S. J. Importance of biomass in the global carbon cycle. J. Geophys. Res. 114, G00E03 (2009).

    Article  Google Scholar 

  3. Food and Agriculture Organization of the United Nations Global Forest Resources Assessment 2010 FAO Forestry Paper 163 (FAO, 2010).

  4. Hansen, M. C., Stehman, S. V. & Potapov, P. V. Quantification of global gross forest cover loss. Proc. Natl Acad. Sci. USA 107, 8650–8655 (2010).

    Article  CAS  Google Scholar 

  5. Houghton, R. A. in Encyclopedia of Ecology 1st edn (eds Jorgensen, S. E. & Fath, B. D.) 448–453 (Elsevier, 2008).

    Book  Google Scholar 

  6. Asner, G. P. et al. High-resolution forest carbon stocks and emissions in the Amazon. Proc. Natl Acad. Sci. USA 107, 16738 (2010).

    Article  CAS  Google Scholar 

  7. Davidson, E. A. & Janssens, I. A. Temperature sensitivity of soil carbon decomposition and feedbacks to climate change. Nature 440, 165–173 (2006).

    Article  CAS  Google Scholar 

  8. Houghton, R. A. Balancing the global carbon budget. Annu. Rev. Earth Planet. Sci. 35, 313–347 (2007).

    Article  CAS  Google Scholar 

  9. Lewis, Simon L. et al. Increasing carbon storage in intact African tropical forests. Nature 457, 1003–1006 (2009).

    Article  CAS  Google Scholar 

  10. DeFries, R. S. et al. Carbon emissions from tropical deforestation and regrowth based on satellite observations for the 1980s and 1990s. Proc. Natl Acad. Sci. USA 99, 14256–14261 (2002).

    Article  CAS  Google Scholar 

  11. Houghton, R. A. Aboveground forest biomass and the global carbon balance. Glob. Change Biol. 11, 945–958 (2005).

    Article  Google Scholar 

  12. Phillips, O. L. et al. Changes in the carbon balance of tropical forests: Evidence from long-term plots. Science 282, 439–442 (1998).

    Article  CAS  Google Scholar 

  13. Pelletier, J., Ramankutty, N. & Potvin, C. Diagnosing the uncertainty and detectability of emission reductions for REDD+ under current capabilities: An example for Panama. Environ. Res. Lett. 6, 024005 (2011).

    Article  Google Scholar 

  14. Grassi, G., Monni, S., Federici, S., Achard, F. & Mollicone, D. Applying the conservativeness principle to REDD to deal with the uncertainties of the estimates. Environ. Res. Lett. 3, 035005 (2008).

    Article  Google Scholar 

  15. Houghton, R. A. et al. Annual fluxes of carbon from deforestation and regrowth in the Brazilian Amazon. Nature 403, 301–304 (2000).

    Article  CAS  Google Scholar 

  16. Zwally, H. J. et al. ICESat’s laser measurements of polar ice, atmosphere, ocean, and land. J. Geodynam. 34, 405–445 (2002).

    Article  Google Scholar 


  18. Williams, C. A. et al. Africa and the global carbon cycle. Carb. Bal. Manag. 2, 3 (2007).

    Article  Google Scholar 

  19. Houghton, R. A. The annual net flux of carbon to the atmosphere from changes in land use 1850–1990. Tellus B 51, 298–313 (1999).

    Article  Google Scholar 

  20. Houghton, R. A. Revised estimates of the annual net flux of carbon to the atmosphere from changes in land use and land management 1850–2000. Tellus B 55, 378–390 (2003).

    Google Scholar 

  21. Friedlingstein, P. et al. Update on CO2 emissions. Nature Geosci. 3, 811–812 (2010).

    Article  CAS  Google Scholar 

  22. Le Quéré, C. et al. Trends in the sources and sinks of carbon dioxide. Nature Geosci. 2, 831–836 (2009).

    Article  Google Scholar 

  23. Pan, Yude et al. A large and persistent carbon sink in the world’s forests. Science 333, 988–993 (2011).

    Article  CAS  Google Scholar 

  24. DeFries, R. et al. Carbon emissions from tropical deforestation and regrowth based on satellite observations for the 1980s and 1990s. Proc. Natl Acad. Sci. USA 99, 14256 (2002).

    Article  CAS  Google Scholar 

  25. Achard, F., Eva, H. D., Mayaux, P., Stibig, H.-J. & Belward, A. Improved estimate sof net carbon emissions from land cover change in the tropics for the 1990s. Glob. Biogeochem. Cycles 18, 1–11 (2004).

    Article  Google Scholar 

  26. Loarie, S. R., Asner, G. P. & Field, C. B. Boosted carbon emissions from Amazon deforestation. Geophys. Res. Lett. 36, L14810 (2009).

    Article  Google Scholar 

  27. Chave, J. et al. Tree allometry and improved esimation of carbon stocks and balance in tropical forests. Oecologia 145, 87–99 (2005).

    Article  CAS  Google Scholar 

  28. Breiman, L. Random forests. Mach. Learning 45, 5–32 (2001).

    Article  Google Scholar 

  29. Food and Agriculture Organization of the United Nations Global Forest Resources Assessment 2005 FAO Forestry Paper 147 (FAO, 2006).

  30. Saatchi, S. S. et al. Benchmark map of forest carbon stocks in tropical regions across three continents. Proc. Natl Acad. Sci. USA (2011).

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This work was made possible through the support of the Gordon and Betty Moore Foundation,, and the David and Lucile Packard Foundation. We thank all the collaborators involved in the field data campaign and the Food and Agriculture Organization of the United Nations, National Forest Monitoring and Assessment for providing recent forest inventories. We also thank NASA and SPOT Image Planet Action for granting access to the satellite data.

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A.B., N.T.L., W.S.W., S.J.G. and R.A.H. designed the study. A.B., M.S., J.H. and D.S-M. conducted the analysis. A.B., R.D., S.S. and P.S.A.B. designed and conducted the error analysis. A.B., S.J.G., R.A.H., W.S.W. and M.A.F. wrote the paper.

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Correspondence to A. Baccini.

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The authors declare no competing financial interests.

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Baccini, A., Goetz, S., Walker, W. et al. Estimated carbon dioxide emissions from tropical deforestation improved by carbon-density maps. Nature Clim Change 2, 182–185 (2012).

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