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Title: Fluxos de CO2 do solo na Floresta Nacional de Caxiuanã, Pará, durante o experimento ESECAFLOR/LBA
Other Titles: Soil CO2 efflux in Caxiuanã national forest, Pará, during the ESECAFLOR/LBA experiment
metadata.dc.creator: SILVA JUNIOR, João de Athaydes
COSTA, Antonio Carlos Lôla da
AZEVEDO, Pedro Vieira de
COSTA, Rafael Ferreira da
GONÇALVES, Paulo Henrique Lopes
BRAGA, Alan Pantoja
MALHI, Yadvinder Singh
ARAGÃO, Luiz Eduardo Oliveira e Cruz de
MEIR, Patrick
Keywords: Florestas
Temperatura do solo
Respiração do solo
Umidade do solo
Floresta Nacional de Caxiuanã - PA
Melgaço - PA
Pará - Estado
Amazônia brasileira
Issue Date: Mar-2013
Citation: SILVA JÚNIOR, João de Athaydes, et al. Fluxos de CO2 do solo na Floresta Nacional de Caxiuanã, Pará, durante o experimento ESECAFLOR/LBA. Revista Brasileira de Meteorologia, São Paulo, v. 28, n. 1, p. 85-92, mar. 2013. Disponível em: <>. Acesso em: 14 ago. 2013. <>.
Abstract: The ESECAFLOR/LBA experiment was carried out at the Caxiuanã National Forest, Pará State, and this article intends to investigate the effect of hydrological stress on the total soil respiration. Two adjacent 1 hectare plots were defined in January 2002. One plot remained in its natural conditions and was used as a control (A), while in the exclusion plot (B) plastic cover panels were installed in order to drain about 70% of the total rainfall to outside of the plot. Accumulated monthly rainfall was recorded from 2005 January to December. During 2005 the rainfall over the ECFPn was 2,211.6 mm, or 9.96% above the mean of 2,011.2 mm. The average soil moisture was 15.6±9.2 and 9.5±3.4% in the plots A and B, respectively. The average soil temperature was 25.6±0.4 and 25.7±0.5 ºC, for the A and B plots, respectively. The average soil CO2 flux was 3.46±0.44 and 3.21±0.84 μmolCO2 m-2s-1 in the A and B plots, respectively. With the exclusion of part of rain in plot B, it had a reduction of 7.23% in the soil CO2 flux (0.25 μmolCO2 m-2s-1), 39.1% in the soil humidity (6.1p.p.), and an increase of 0.39% in the soil temperature (0.1ºC). The soil moisture in parcel B was lesser than in the parcel A, due to the exclusion system of rain. However at the beginning of the year, site B undergone some changes causing the measuring values to be about the same on both areas.
ISSN: 0102-7786
Appears in Collections:Artigos Científicos - NAEA

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