Elevated CO2 and O3 alter soil organic matter cycling in northern deciduous forest

June 1, 2011

Scientists from Argonne and two Midwest universities used DOE's Free-Air CO2 Enrichment (FACE) experiment to show that elevated CO2 levels increase the cycling of carbon and nitrogren in soil organic matter. In contrast, elevated O3 tended to have the opposite effect. Thus, the potential for long-term soil carbon sequestration could be limited in a world with elevated levels of atmospheric CO2. More »