Aspen Trees

The Aspen FACE test site in Wisconsin

MTU: Trees Finding The Nitrogen They Need Even When CO2 Is Supersized

A 10-year study that intentionally exposed trees to higher levels of carbon dioxide and ozone found that the trees managed to scrounge enough nitrogen to use the additional CO2 — without causing nitrogen levels in the soil to fall. Instead, leaf litter and other organic matter decomposed more quickly, making more nitrogen available.

WWJ Newsradio 950–02/09/2012

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