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When seen through the lens of technology, few resources are truly scarce; they’re mainly inaccessible. 

 

Peter Diamandis

Pine Beetles Turn Forests From Carbon Sinks to Sources

RATE THIS! +1
Posted in Science on 25th Jun, 2012 05:05 PM by AlexMuller

By 2020, the beetles will have done so much damage that the forest is expected to release more carbon dioxide than it absorbs, according to new research.

 

The study, led by Werner Kurz of the Canadian Forest Service, estimates that over 21 years trees killed by the beetle outbreak could release 990 megatons of carbon dioxide into the atmosphere —roughly equivalent to five years of emissions from Canada's transportation sector.

 

The outbreak has affected about 33 million acres, or about 52,000 square miles (134,000 square kilometers), of lodgepole pines. Bark beetles also have killed huge swaths of pines in the western United States, including about 2,300 square miles (6,000 square kilometers) of trees in Colorado.

 

"When trees are killed, they no longer are able to take carbon from the atmosphere. Then when dead trees start to decompose, that releases carbon dioxide into the atmosphere," Kurz said.

 

That could exacerbate the global warming that contributed to the outbreaks in the first place. Warmer temperatures have allowed beetles to survive farther north and at higher elevations
 



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Comments

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Posted: 2013-11-23
+0
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