Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Greater Soil Carbon Sequestration under Nitrogen-fixing Trees Compared with Eucalyptus Species.

    Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Sigrid C. Resh; Dan Binkley
    Date: 2002
    Source: Ecosystems 5 :217–231
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (241.02 KB)

    Description

    Forests with nitrogen-fixing trees (N–fixers) typically accumulate more carbon (C) in soils than similar forests without N–fixing trees. This difference may develop from fundamentally different processes, with either greater accumulation of recently fixed C or reduced decomposition of older soil C. We compared the soil C pools under N–fixers with Eucalyptus (non–N–fixers) at four tropical sites: two sites on Andisol soils in Hawaii and two sites on Vertisol and Entisol soils in Puerto Rico. Using stable carbon isotope techniques, we tracked the loss of the old soil organic C from the previous C4 land use (SOC4) and the gain of new soil organic C from the C3, N–fixer, and non–N–fixer plantations (SOC3). Soils beneath N–fixing trees sequestered 0.11 +/- 0.07 kg per square per y (mean +/- one standard error) of total soil organic carbon (SOCT) compared with no change under Eucalyptus (0.00 +/- 0.07 kg per square meter per yr; P = 0.02). About 55% of the greater SOCT sequestration under the N–fixers resulted from greater retention of old SOC4, and 45% resulted from greater accretion of new SOC3. Soil N accretion under the N–fixers explained 62% of the variability of the greater retention of old SOC4 under the N–fixers. The greater retention of older soil C under N–fixing trees is a novel finding and may be important for strategies that use reforestation or afforestation to offset C emissions.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Resh,Sigrid C.; Binkley, Dan; Parrotta, John A. 2002. Greater Soil Carbon Sequestration under Nitrogen-fixing Trees Compared with Eucalyptus Species. Ecosystems 5 :217–231

    Keywords

    Key words: carbon accretion, carbon retention, carbon sequestration, Eucalyptus, Hawaii, isotopes, nitrogen-fixing trees, Puerto Rico, soil organic carbon.

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/30155