Duke University began exposing North Carolina forest plots to elevated CO2; after 10 years, loblolly pines produced about 20% more biomass

Duke University’s recent forest experiment revealed that loblolly pine plots exposed to elevated carbon dioxide levels produced an average of twenty percent more biomass. However, this growth was heavily influenced by the availability of water and nitrogen; scarce resources significantly limited the effectiveness of the additional carbon dioxide in boosting tree growth. These findings challenge the notion that forests simply absorb excess atmospheric carbon.
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