Oecologia

, Volume 88, Issue 3, pp 362–366 | Cite as

Nitrogen transformations and nitrous oxide flux in a tropical deciduous forest in México

  • Georgina García-Méndez
  • J. Manuel Maass
  • Pamela A. Matson
  • Peter M. Vitousek
Original Papers

Summary

Emissions of nitrous oxide and soil nitrogen pools and transformations were measured over an annual cycle in two forests and one pasture in tropical deciduous forest near Chamela, México. Nitrous oxide flux was moderately high (0.5–2.5 ng cm−2 h−1) during the wet season and low (<0.3 ng cm−2 h−1) during the dry season. Annual emissions of nitrogen as nitrous oxide were calculated to be 0.5–0.7 kg ha−1 y−1, with no substantial difference between the forests and pasture. Wetting of dry soil caused a large but short-lived pulse of N2O flux that accounted for <2% of annual flux. Variation in soil water through the season was the primary controlling factor for pool sizes of ammonium and nitrate, nitrogen transformations, and N2O flux.

Key words

Tropical deciduous forest Tropical pasture Land clearing Nitrogen loss Nitrous oxide 

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Georgina García-Méndez
    • 1
  • J. Manuel Maass
    • 1
  • Pamela A. Matson
    • 2
  • Peter M. Vitousek
    • 3
  1. 1.Centro de EcologíaUniversidad Nacional Autónoma de MéxicoMéxicoMéxico
  2. 2.Earth Systems Science DivisionNASA-Ames Research CenterMoffett FieldUSA
  3. 3.Department of Biological SciencesStanford UniversityStanfordUSA

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