CH4 FLUX IN FOREST AREA IN ARAGUAIA RIVER MARGIN – MT
Keywords:Methain flux. Araguaia river. Amazon.
The aim of this study was to estimate the methane flux in an area of upland forest on the Araguaia River margin, in Santa Terezinha - MT, 15 km far from the LBA project flux measurement tower on the Bananal island - TO. For this a micrometeorological tower was installed on the river margin, with climatic variables sensors, eddy covariance and methane concentration by open optical path and closed in days of the rainy season in the region. Estimates of CH4 concentration showed good correlation between the sensors, with the highest concentrations at night and lower concentrations during the day, likely effect of differences between CLN and CLC, and averages around 1.8 ppm, near to that found in other sites upland forest. Both the river and the forest are sources of methane to the atmosphere. with a higher methane flux from river directions, being double the average of the direction from forest, but the daytime maximum of the forest direction are larger and can reach up to 30 nmol m-2 s-1.
Basso, L.S. 2014. Determinação da emissão de metano da bacia amazônica. Tese (Doutorado), Universidade de São Paulo. 143 p.
Carmo, J.; Keller, M.; Dias, J.; De Camargo, P.; Crill, P.A. 2006. A source of methane from upland forests in the Brazilian Amazon. Geophysical Research Letters,Washington, v. 33, n. 4, p. 45-58.
Costa, G.B. 2015. Fluxos de energia, CO2 e CH4 sobre a floresta em planície de inundação da ilha do Bananal. Tese (Doutorado), Escola Superior de Agricultura "Luiz de Queiroz", 142 p.
Denman, K. L. 2007. Couplings between changes in the climate system and biogeochemistry, in Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, , edited by S. Solomon et al., chap. 7, Cambridge Univ. Press,Cambridge, U.K, p. 499–587.
Fisch G. 1996. Camada Limite Amazônica: Aspectos Observacionais e de Modelagem. Tese (Doutorado em Meteorologia). Instituto Nacional de Pesquisas Espaciais, INPE/NTD, São José dos Campos, SP, p. 171.
Leite C.C. 2004. Características da camada limite convectiva durante a transição da estação seca para chuvosa na Amazônia – comparação floresta/pastagem (dry to wet amc/lba - 2002). Dissertação (mestrado) Universidade federal de alagoas, p. 61.
MCTI, M. 2013. Estimativas anuais de emissões de gases de efeito estufa no Brasil. Brasília, 55 p .
Querino, C.A.S ; Smeets, C.J.P.P. ; Vigano, I. ; Holzinger, R. ; Moura, V.; Gatti, L.V. ; Martinewski, A. ; Manzi, A.O. ; De Araújo, A.C. ; Röckmann, T. 2011. Methane flux, vertical gradient and mixing ratio measurements in a tropical forest. Atmospheric Chemistry and Physics Discussion (Online), v. 11, p. 5313-5350.
Ringeval, B.;Houweling, S.; Van Bodegom, P.M.; Spahni, R.; Van Beek, R.; Joos, F.; Röckmann. 2014. T. Methane emissions from floodplains in the Amazon Basin: challenges in developing a process-based model for global applications. Biogeosciences, New York, v.11, p.1519–1558.
Sawakuchi, H.O.; Bastviken, D.; Sawakuchi, A.; Krusche, A.V.; Ballester, M.V.R.; Richey, J.E. 2014. Methane emissions from Amazonian Rivers and their contribution to the global methane budget. Global Change Biology.
Silva C.M.S.E. 2005. Comportamento da Camada Limite Atmosférica sobre pastagem em Rondônia durante a transição da estação seca para chuvosa em 2002. Dissertação (Mestrado) Universidade Federal de Alagoas, p. 82.
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