Changes in the Carbon Balance of Tropical Forests: Evidence from Long-Term Plots

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Science  16 Oct 1998:
Vol. 282, Issue 5388, pp. 439-442
DOI: 10.1126/science.282.5388.439

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The role of the world's forests as a “sink” for atmospheric carbon dioxide is the subject of active debate. Long-term monitoring of plots in mature humid tropical forests concentrated in South America revealed that biomass gain by tree growth exceeded losses from tree death in 38 of 50 Neotropical sites. These forest plots have accumulated 0.71 ton, plus or minus 0.34 ton, of carbon per hectare per year in recent decades. The data suggest that Neotropical forests may be a significant carbon sink, reducing the rate of increase in atmospheric carbon dioxide.

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