Soil-atmosphere Exchange Of Nitrous Oxide, Methane And Carbon Dioxide In A Gradient Of Elevation In The Coastal Brazilian Atlantic Forest

dc.creatorSousa Neto E.
dc.creatorCarmo J.B.
dc.creatorKeller M.
dc.creatorMartins S.C.
dc.creatorAlves L.F.
dc.creatorVieira S.A.
dc.creatorPiccolo M.C.
dc.creatorCamargo P.
dc.creatorCouto H.T.Z.
dc.creatorJoly C.A.
dc.creatorMartinelli L.A.
dc.date2011
dc.date2015-06-30T20:20:43Z
dc.date2015-11-26T14:48:18Z
dc.date2015-06-30T20:20:43Z
dc.date2015-11-26T14:48:18Z
dc.date.accessioned2018-03-28T21:59:04Z
dc.date.available2018-03-28T21:59:04Z
dc.identifier
dc.identifierBiogeosciences. , v. 8, n. 3, p. 733 - 742, 2011.
dc.identifier17264170
dc.identifier10.5194/bg-8-733-2011
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-79953011913&partnerID=40&md5=4bacdba2efebc6fc56d60fa13d93e28a
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/107631
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/107631
dc.identifier2-s2.0-79953011913
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1253569
dc.descriptionSoils of tropical forests are important to the global budgets of greenhouse gases. The Brazilian Atlantic Forest is the second largest tropical moist forest area of South America, after the vast Amazonian domain. This study aimed to investigate the emissions of nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4) fluxes along an altitudinal transect and the relation between these fluxes and other climatic, edaphic and biological variables (temperature, fine roots, litterfall, and soil moisture). Annual means of N2O flux were 3.9 (± 0.4), 1.0 (± 0.1), and 0.9 (± 0.2) ng N cm-2 h-1 at altitudes 100, 400, and 1000 m, respectively. On an annual basis, soils consumed CH4 at all altitudes with annual means of -1.0 (± 0.2), -1.8 (± 0.3), and -1.6 (± 0.1) mg m-2 d-1 at 100 m, 400 m and 1000 m, respectively. Estimated mean annual fluxes of CO2 were 3.5, 3.6, and 3.4 μmol m-2 s-1 at altitudes 100, 400 and 1000 m, respectively. N2O fluxes were significantly influenced by soil moisture and temperature. Soil-atmosphere exchange of CH4 responded to changes in soil moisture. Carbon dioxide emissions were strongly influenced by soil temperature. While the temperature gradient observed at our sites is only an imperfect proxy for climatic warming, our results suggest that an increase in air and soil temperatures may result in increases in decomposition rates and gross inorganic nitrogen fluxes that could support consequent increases in soil N2O and CO2 emissions and soil CH4 consumption.
dc.description8
dc.description3
dc.description733
dc.description742
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dc.languageen
dc.publisher
dc.relationBiogeosciences
dc.rightsaberto
dc.sourceScopus
dc.titleSoil-atmosphere Exchange Of Nitrous Oxide, Methane And Carbon Dioxide In A Gradient Of Elevation In The Coastal Brazilian Atlantic Forest
dc.typeArtículos de revistas


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