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    Use of carbon-13 and carbon-14 to measure the effects of carbon dioxide and nitrogen fertilization on carbon dynamics in ponderosa pine

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    http://hdl.handle.net/10217/85522
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    NREL_Paul_Haile-Mariam_sssaj_64_1984-1993.pdf (224.0Kb)
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    Abstract
    Soil C sequestration in predicted, future elevated CO2 environments will be important to atmospheric CO2 levels, soil tilth, and fertility. An elevated CO2 study with ponderosa pines (Pinus ponderosa Laws) grown in chambers produced above ground vegetation with a δ13C of −44‰ and roots with −42‰. This together with carbon dating made it possible to follow soil C dynamics. Fifty percent of the California upland soil C, resistant to acid hydrolysis, was designated as the resistant fraction. Carbon dating showed the mean residence times of this fraction to be 400 to 1500 yr greater than the total ...
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    Author(s)
    Paul, Eldor A.; Ball, J. T.; Johnson, D. W.; Cheng, W.; Haile-Mariam, Shawel

    Date Issued
    2000-11
    Format
    born digital; articles
    Collections
    • Faculty Publications - Department of Soil & Crop Sciences
    • Faculty Publications - Natural Resource Ecology Laboratory (NREL)
    • Paul (Eldor A.) Collection - Department of Soil & Crop Sciences
    • Paul (Eldor A.) Collection - Natural Resource Ecology Laboratory (NREL)

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