• A personal note on IGBP and the social sciences

    Humans are an integral component of the Earth system as conceptualised by IGBP. João Morais recalls key milestones in IGBP’s engagement with the social sciences and offers some words of advice for Future Earth.
  • IGBP and Earth observation:
    a co-evolution

    The iconic images of Earth beamed back by the earliest spacecraft helped to galvanise interest in our planet’s environment. The subsequent evolution and development of satellites for Earth observation has been intricately linked with that of IGBP and other global-change research programmes, write Jack Kaye and Cat Downy .

Improved estimates of net carbon emissions from land cover change in the tropics for the 1990s

Global Biogeochemical Cycles (2004)
Achard F, Eva H D, Mayaux P, Stibit H-J and Belward A (eds)
1-12 pp.

DOI: 10.1029/2003GB002142
Vol. 18: No. 2: GB2008


Recent figures on net forest cover change rates of the world's tropical forest cover are used for the calculation of carbon fluxes in the global budget. By applying our deforestation findings in the humid tropics, complemented by published deforestation figures in the dry tropics, to refereed data on biomass, we produced new estimates of net carbon emissions. These estimates are supported by recent, independent estimations of net carbon emissions globally, over the Brazilian Amazon, and by observations of atmospheric CO2 emissions over Southeast Asia. Our best estimate for global net emissions from land-use change in the tropics is at 1.1 0.3 Gt C yr(-1). This estimate includes emissions from conversion of forests representing 71% of budget) and loss of soil carbon after deforestation 20%), emissions from forest degradation 4.4%), emissions from the 1997 - 1998 Indonesian exceptional fires 8.3%), and sinks from regrowths (-3.3%).

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IGBP closed at the end of 2015. This website is no longer updated.

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