Forests Have Replaced Tundra Due to Warming, Study Finds

Publication: National Geographic News   Date: March 9, 2007   View Article

High in the Canadian Arctic, large tracts of tundra have given way to forests of spruce trees and bushes in response to a spike of warming temperatures nearly a century ago, according to a new study.

The transition took place more quickly than scientists thought, suggesting that tundra could keep shrinking as temperatures continue to warm.

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