carbon sink

Forests absorb 20 percent of fossil fuel emissions: study
By Michael Kahn, Reuters, February 18, 2009

LONDON - Tropical trees have grown bigger over the past 40 years and now absorb 20 percent of fossil fuel emissions from the atmosphere, highlighting the need to preserve threatened forests, British researchers said Wednesday.

Using data collected from nearly 250,000 trees in the world's tropical forests over the past 40 years, their study found that tropical forests across the world remove 4.8 billion metric tons of carbon dioxide emissions each year.



"To get an idea of the value of the sink, the removal of nearly 5 billion tons of carbon dioxide from the atmosphere by intact tropical forests, based on realistic prices for a ton of carbon, should be valued at around 13 billion pounds per year," said Lee White, Gabon's chief climate change scientist, who co-led the study, said in a statement.

The researchers do not know exactly why trees are getting bigger and mopping up more carbon but they suspect that extra carbon dioxide in the atmosphere may be acting like a fertilizer. . . .

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