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In experimental forest, trees soak up CO2
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North American forests appear to have a greater capacity to soak up heat-trapping carbon dioxide gas than previously thought.
For the study, researchers continuously pumped extra carbon dioxide into the canopies of trembling aspen, paper birch, and sugar maple trees at a 38-acre experimental forest in Rhinelander, Wis., from 1997 to 2008.
The results of a 12-year study challenge several long-held assumptions about how future forests will respond to the rising levels of atmospheric carbon dioxide blamed for human-caused climate change, says Donald Zak, professor of ecology at the University of Michigan.
Full story at Futurity.
Photo credit: David Karnosky, Michigan Technological University
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