Nutrient cycling throughout the
We used isotope pool dilution to measure potential gross nitrogen cycling rates throughout the soil profile. We found that nitrogen mineralization at depth in the soil, combined with increased root exploration of the soil volume under elevated [CO2], may be more important than changes in potential gross nitrogen cycling rates in sustaining forest responses to rising atmospheric CO2.
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Publications.Iversen CM, Hooker TD, Classen AT, Norby RJ. 2011. Net mineralization of N at deeper soil depths as a potential mechanism for sustained forest production under elevated [CO2]. Global Change Biology 17: 1130-1139.
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Related Publications. |
Data Sets.See freely-available ORNL FACE data sets here: https://facedata.ornl.gov/ornl/.
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This research was funded by the Office of Biological and Environmental Research in the U.S. Department of Energy's Office of Science.