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. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): A. D. Nobre; M. Keller; P. M. Crill; R. C. Harriss
    Date: 2001
    Source: Biol Fertil Soils 34 :363–373
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (465 B)


    Tropical soils are potentially the highest and least studied nitrous oxide (N2O) production areas in the world. The effect of water, nitrate and glucose additions on profile concentrations and episodic emissions of N2O for two volcanic soils in Costa Rica was examined. Magnitudes of episodic N2O pulses, as well as overall N2O emissions, varied considerably and consistently, depending on soil texture, soil water content, and kind and availability of substrates. Emission pulses began within 30 min, peaking no later than 8 h after wetting. Production in the soil occurred mainly in the layer between 5 and 20 cm deep, but depended directly on the temporal dynamics of the water profile. Changes in soil NO3–were associated with soil N2O concentration changes. Depending on the treatments, one episodic N2O production event driven by one moderate rain could account for less than 15% to more than 90% of the total weekly production.Previous survey studies may have underestimated the contribution of N2O emissions from tropical soils.In order to improve budgets and models of N2O emissions, episodic emissi ons driven by rain events and amendments must be considered

    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.


    Nobre, A. D.; Keller, M.; Crill, P. M.; Harriss, R. C. 2001. Short-term nitrous oxide profile dynamics and emissions response to water, nitrogen and carbon additions in two tropical soils. Biol Fertil Soils 34 :363–373


    Nitrous oxide, Tropical soil, Profile dynamics, Episodic emissions

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page