15 Jul 2011:
Forests Absorb One-Third
Of Fossil Fuel Emissions, Study Finds
Forests play an even greater role in Earth’s climate system than previously known, according to the most comprehensive assessment yet of the carbon storage potential of the world’s wooded areas. Between 1990
and 2007, the planet’s tropical, temperate, and boreal forests absorbed about 2.4 billion tons of carbon annually
, or the equivalent of about one-third of fossil fuel emissions, and re-growth of trees in previously cleared lands absorbed an additional 1.6 billion tons, according to a study published in the journal Science
. During the same period, however, rampant deforestation — particularly in the world's tropical regions — released 2.9 billion tons of carbon annually. Overall, the planet’s forests provide a net carbon sink of about 1.1 billion tons of carbon, or the equivalent of about 13 percent of the emissions produced by humankind annually. According to researchers, the findings suggest that forest protection should play an even more important role in strategies to protect the planet’s climate, including the emergence of carbon markets. “The amount of savings which are up for grabs is very large, certainly larger than what we thought,” said Josep Canadell, an Australian scientist and co-author of the study.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
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Photographer Peter Essick documents the swift changes wrought by global warming in Antarctica, Greenland, and other far-flung places. View the gallery.
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The Warriors of Qiugang
, a Yale Environment 360
video that chronicles the story of a Chinese village’s fight against a polluting chemical plant, was nominated for a 2011 Academy Award for Best Documentary (Short Subject).
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Top Image: aerial view of Iceland
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In a Yale Environment 360
video, photographer Pete McBride documents how increasing water demands have transformed the Colorado River, the lifeblood of the arid Southwest. Watch the video.