14 May 2012:
Various Uses of Wood
Determine Emissions from Deforestation
The volume of greenhouse gases released when a forest is cleared depends on how how the trees are used and in which part of the world the trees are grown
, according to a study by researchers at the University of California, Davis. Analyzing how 160 countries use wood from cleared forests, the researchers found that if the wood is generally used to create solid wood products, such as timber for housing, up to 62 percent of the carbon in the trees remains in storage. Temperate forests in the U.S., Canada, and Europe are cleared primarily for use in such products. But the study found that wood from tropical forests in places like Brazil and Indonesia is generally used in paper, pulp, and bioenergy production, and such uses lead to an almost complete release of the carbon stored in trees. Reporting in the journal Nature Climate Change
, the researchers said that early studies assumed that most of the carbon stored in trees was released once they were felled. The new study, however, gives a more nuanced picture of carbon releases from deforestation.
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A look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
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An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
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Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.