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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
15/12/2009 |
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Data da última atualização: |
08/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KELLER, M.; VARNER, R.; DIAS, J. D.; SILVA, H.; CRILL, P.; OLIVEIRA JUNIOR, R. C. de; ASNER, G. P. |
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Afiliação: |
MICHAEL KELLER, International Institute of Tropical Forestry, USDA Forest Service / University of New Hampshire; RUTH VARNER, University of New Hampshire; JADSON D. DIAS, Fundação Floresta Tropical; HUDSON SILVA, University of New Hampshire / Fundação Floresta Tropical; PATRICK CRILL, University of New Hampshire / Stockholm University; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; GREGORY P. ASNER, Stanford University. |
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Título: |
Soil-atmosphere exchange of nitrous oxide, nitric oxide, methane, and carbon dioxide in logged and undisturbed forest in the Tapajos National Forest, Brazil. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Earth Interactions, v. 9, n. 23, p. 1-28, Nov. 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Selective logging is an extensive land use in the Brazilian Amazon region. The soil?atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol) over two years (2000?01) in both undisturbed forest and forest recently logged using reduced impact forest management in the Tapajos National Forest, near Santarem, Para, Brazil. In undisturbed forest, annual soil?atmosphere fluxes of N2O (mean ± standard error) were 7.9 ± 0.7 and 7.0 ± 0.6 ng N cm?2 h?1 for the Oxisol and 1.7 ± 0.1 and 1.6 ± 0.3 ng N cm?2 h?1 for the Ultisol for 2000 and 2001, respectively. The annual fluxes of NO from undisturbed forest soil in 2001 were 9.0 ± 2.8 ng N cm?2 h?1 for the Oxisol and 8.8 ± 5.0 ng N cm?2 h?1 for the Ultisol. Consumption of CH4 from the atmosphere dominated over production on undisturbed forest soils. Fluxes averaged ?0.3 ± 0.2 and ?0.1 ± 0.9 mg CH4 m?2 day?1 on the Oxisol and ?1.0 ± 0.2 and ?0.9 ± 0.3 mg CH4 m?2 day?1 on the Ultisol for years 2000 and 2001. For CO2 in 2001, the annual fluxes averaged 3.6 ± 0.4 ?mol m?2 s?1 on the Oxisol and 4.9 ± 1.1 ?mol m?2 s?1 on the Ultisol. We measured fluxes over one year each from two recently logged forests on the Oxisol in 2000 and on the Ultisol in 2001. Sampling in logged areas was stratified from greatest to least ground disturbance covering log decks, skid trails, tree-fall gaps, and forest matrix. Areas of strong soil compaction, especially the skid trails and logging decks, were prone to significantly greater emissions of N2O, NO, and especially CH4. In the case of CH4, estimated annual emissions from decks reached extremely high rates of 531 ± 419 and 98 ± 41 mg CH4 m?2 day?1, for Oxisol and Ultisol sites, respectively, comparable to wetland emissions in the region. We calculated excess fluxes from logged areas by subtraction of a background forest matrix or undisturbed forest flux and adjusted these fluxes for the proportional area of ground disturbance. Our calculations suggest that selective logging increases emissions of N2O and NO from 30% to 350% depending upon conditions. While undisturbed forest was a CH4 sink, logged forest tended to emit methane at moderate rates. Soil?atmosphere CO2 fluxes were only slightly affected by logging. The regional effects of logging cannot be simply extrapolated based upon one site. We studied sites where reduced impact harvest management was used while in typical conventional logging ground damage is twice as great. Even so, our results indicate that for N2O, NO, and CH4, logging disturbance may be as important for regional budgets of these gases as other extensive land-use changes in the Amazon such as the conversion of forest to cattle pasture. MenosSelective logging is an extensive land use in the Brazilian Amazon region. The soil?atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol) over two years (2000?01) in both undisturbed forest and forest recently logged using reduced impact forest management in the Tapajos National Forest, near Santarem, Para, Brazil. In undisturbed forest, annual soil?atmosphere fluxes of N2O (mean ± standard error) were 7.9 ± 0.7 and 7.0 ± 0.6 ng N cm?2 h?1 for the Oxisol and 1.7 ± 0.1 and 1.6 ± 0.3 ng N cm?2 h?1 for the Ultisol for 2000 and 2001, respectively. The annual fluxes of NO from undisturbed forest soil in 2001 were 9.0 ± 2.8 ng N cm?2 h?1 for the Oxisol and 8.8 ± 5.0 ng N cm?2 h?1 for the Ultisol. Consumption of CH4 from the atmosphere dominated over production on undisturbed forest soils. Fluxes averaged ?0.3 ± 0.2 and ?0.1 ± 0.9 mg CH4 m?2 day?1 on the Oxisol and ?1.0 ± 0.2 and ?0.9 ± 0.3 mg CH4 m?2 day?1 on the Ultisol for years 2000 and 2001. For CO2 in 2001, the annual fluxes averaged 3.6 ± 0.4 ?mol m?2 s?1 on the Oxisol and 4.9 ± 1.1 ?mol m?2 s?1 on the Ultisol. We measured fluxes over one year each from two recently logged forests on the Oxisol in 2000 and on the Ultisol in 2001. Sampling in logged areas was stratified from greatest to least ground disturbance covering log decks, skid trails, tree-fall gaps, and forest matrix. Areas of strong soil compaction, esp... Mostrar Tudo |
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Palavras-Chave: |
Trace gas. |
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Thesagro: |
Floresta Tropical. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/103525/1/ei1252E1.pdf
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Marc: |
LEADER 03484naa a2200217 a 4500
001 1578048
005 2022-06-08
008 2005 bl uuuu u00u1 u #d
100 1 $aKELLER, M.
245 $aSoil-atmosphere exchange of nitrous oxide, nitric oxide, methane, and carbon dioxide in logged and undisturbed forest in the Tapajos National Forest, Brazil.$h[electronic resource]
260 $c2005
520 $aSelective logging is an extensive land use in the Brazilian Amazon region. The soil?atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol) over two years (2000?01) in both undisturbed forest and forest recently logged using reduced impact forest management in the Tapajos National Forest, near Santarem, Para, Brazil. In undisturbed forest, annual soil?atmosphere fluxes of N2O (mean ± standard error) were 7.9 ± 0.7 and 7.0 ± 0.6 ng N cm?2 h?1 for the Oxisol and 1.7 ± 0.1 and 1.6 ± 0.3 ng N cm?2 h?1 for the Ultisol for 2000 and 2001, respectively. The annual fluxes of NO from undisturbed forest soil in 2001 were 9.0 ± 2.8 ng N cm?2 h?1 for the Oxisol and 8.8 ± 5.0 ng N cm?2 h?1 for the Ultisol. Consumption of CH4 from the atmosphere dominated over production on undisturbed forest soils. Fluxes averaged ?0.3 ± 0.2 and ?0.1 ± 0.9 mg CH4 m?2 day?1 on the Oxisol and ?1.0 ± 0.2 and ?0.9 ± 0.3 mg CH4 m?2 day?1 on the Ultisol for years 2000 and 2001. For CO2 in 2001, the annual fluxes averaged 3.6 ± 0.4 ?mol m?2 s?1 on the Oxisol and 4.9 ± 1.1 ?mol m?2 s?1 on the Ultisol. We measured fluxes over one year each from two recently logged forests on the Oxisol in 2000 and on the Ultisol in 2001. Sampling in logged areas was stratified from greatest to least ground disturbance covering log decks, skid trails, tree-fall gaps, and forest matrix. Areas of strong soil compaction, especially the skid trails and logging decks, were prone to significantly greater emissions of N2O, NO, and especially CH4. In the case of CH4, estimated annual emissions from decks reached extremely high rates of 531 ± 419 and 98 ± 41 mg CH4 m?2 day?1, for Oxisol and Ultisol sites, respectively, comparable to wetland emissions in the region. We calculated excess fluxes from logged areas by subtraction of a background forest matrix or undisturbed forest flux and adjusted these fluxes for the proportional area of ground disturbance. Our calculations suggest that selective logging increases emissions of N2O and NO from 30% to 350% depending upon conditions. While undisturbed forest was a CH4 sink, logged forest tended to emit methane at moderate rates. Soil?atmosphere CO2 fluxes were only slightly affected by logging. The regional effects of logging cannot be simply extrapolated based upon one site. We studied sites where reduced impact harvest management was used while in typical conventional logging ground damage is twice as great. Even so, our results indicate that for N2O, NO, and CH4, logging disturbance may be as important for regional budgets of these gases as other extensive land-use changes in the Amazon such as the conversion of forest to cattle pasture.
650 $aFloresta Tropical
653 $aTrace gas
700 1 $aVARNER, R.
700 1 $aDIAS, J. D.
700 1 $aSILVA, H.
700 1 $aCRILL, P.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aASNER, G. P.
773 $tEarth Interactions$gv. 9, n. 23, p. 1-28, Nov. 2005.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 24 | |
| 6. |  | PALACE, M. W.; KELLER, M. M.; ASNER, G. P.; SILVA, J. N. M. Biomass and Necromass in Three Undisturbed Forests in the Brazilian Amazon. In: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA, 2004. Resumo 21.4.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 10. | | KELLER, M. M.; PALACE, M. W.; SILVA, J. N. M.; ASNER, G. P. Selective Logging Effects on Carbon Budgets at Three Sites in the Brazilian Amazon. In: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA, 2004. Resumo 21.3.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 12. | | ASNER, G. P.; BROADBENT, E. N.; OLIVEIRA, P. J. C.; KELLER, M.; KNAPP, D.; SILVA, J. N. M. Condition and fate of logged forests in the Brazilian Amazon. PNAS, v. 103, n. 34, p. 12947-12950, Aug. 2006.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 14. | | ASNER, G. P.; PALACE, M.; KELLER, M.; PEREIRA JÚNIOR, R.; SILVA, J. N. M.; ZWEEDE, J. C. Estimating canopy structure in an Amazon forest from laser range finder and IKONOS satellite observations. Biotropica, v. 34, n. 4, p. 483-492, Dec. 2002.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 15. | | ASNER, G. P.; KNAPP, D. E.; BROADBENT, E. N.; OLIVEIRA, P. J. C.; KELLER, M.; SILVA, J. N. Selective logging in the brazilian Amazon. Science, v. 310, n. 480, p. 480-482, 2005.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 16. | | KELLER, M.; VARNER, R.; DIAS, J. D.; SILVA, H.; CRILL, P.; OLIVEIRA JUNIOR, R. C. de; ASNER, G. P. Soil-atmosphere exchange of nitrous oxide, nitric oxide, methane, and carbon dioxide in logged and undisturbed forest in the Tapajos National Forest, Brazil. Earth Interactions, v. 9, n. 23, p. 1-28, Nov. 2005.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - B |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 17. | | HUNTER, M. O.; KELLER, M.; CAMARGO, P.; PALACE, M.; OLIVEIRA JUNIOR, R. C. de; ESPIRITO SANTO, F.; KEIZER, E.; LEFSKY, M.; ASNER, G. P. Forest structure at five LBA study sites. In: SCIENCE TEAM MEETING, 10., 2006, Brasília, DF. Book of Abstracts... Manaus: LBA-ECO, 2006. p. 29.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 18. | | HURTT, G.; XIAO, X.; KELLER, M.; PALACE, M.; ASNER, G. P.; BRASWELL, R.; BRONDÍZIO, E. S.; CARDOSO, M.; CARVALHO, C. J. R.; FEARON, M. G.; GUILD, L.; HAVEN, S.; HETRICK, S.; MOORE III, B.; NOBRE, C.; READ, J. M.; SÁ, T.; SCHLOSS, A.; VOURLITIS, G.; WICKEL, A. J. IKONOS imagery for the large scale biosphere-atmosphere experiment in Amazonia (LBA). Remote Sensing of Environment, v. 88, p.111-127, 2003. il.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 19. | | BUSTAMANTE, M. M. C.; ROITMAN, I.; AIDE, T. M.; ALENCAR, A.; ANDERSON, L. O.; ARAGÃO, L.; ASNER, G. P.; BARLOW, J.; BERENGUER, E.; CHAMBERS, J.; COSTA, M. H.; FANIN, T.; FERREIRA, L. G.; FERREIRA, J.; KELLER, M.; MAGNUSSON, W. E.; MORALES-BARQUERO, L.; MORTON, D.; OMETTO, J. P. H. B.; PALACE, M.; PERES, C. A.; SILVÉRIO, D.; TRUMBORE, S.; VIEIRA, I. C. G. Toward an integrated monitoring framework to assess the effects of tropical forest degradation and recovery on carbon stocks and biodiversity. Global Change Biology, v. 22, n. 1, p. 92-109, Jan. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Territorial. |
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| 20. | | ESPÍRITO-SANTO, F. D. B.; GLOOR, M.; KELLER, M.; MALHI, Y.; SAATCHI, S.; NELSON, B.; OLIVEIRA JUNIOR, R. C.; PEREIRA, C.; LLOYD, J.; FROLKING, S.; PALACE, M.; SHIMABUKURO, Y. E.; DUARTE, V.; MONTEAGUDO MENDOZA, A.; LÓPEZ-GONZÁLEZ, G.; BAKER, T. R.; FELDPAUSCH, T. R.; BRIENEN, R. J. W.; ASNER, G. P.; BOYD, D. S.; PHILLIPS, O. L. Size and frequency of natural forest disturbances and the Amazon forest carbon balance. Nature Communications, v. 5, art. n. 3434, 18 Mar. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amazônia Oriental; Embrapa Territorial. |
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| Registros recuperados : 24 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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