Nitrogen deposition in tropical forests from savanna and deforestation fires

Y. Chen, J.T Randerson, G.R. van der Werf, D.C. Morton, M.Q. Mu, P.S. Kasibhatla

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    We used satellite-derived estimates of global fire emissions and a chemical transport model to estimate atmospheric nitrogen (N) fluxes from savanna and deforestation fires in tropical ecosystems. N emissions and reactive N deposition led to a net transport of N equatorward, from savannas and areas undergoing deforestation to tropical forests. Deposition of fire-emitted N in savannas was only 26% of emissions - indicating a net export from this biome. On average, net N loss from fires (the sum of emissions and deposition) was equivalent to approximately 22% of biological N fixation (BNF) in savannas (4.0 kg N ha
    Original languageEnglish
    Pages (from-to)2024-2038
    JournalGlobal Change Biology
    Volume16
    Issue number7
    DOIs
    Publication statusPublished - 2010

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