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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
22/08/2006 |
Data da última atualização: |
28/11/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
VASCONCELOS, S. S.; ZARIN, D. J.; CAPANU, M.; LITTELL, R.; DAVIDSON, E. A.; ISHIDA, F. Y.; SANTOS, E. B.; ARAÚJO, M. M.; ARAGÃO, D. V.; RANGEL-VASCONCELOS, L. G. T.; OLIVEIRA, F. de A.; MCDOWELL, W. H.; CARVALHO, C. J. R. de. |
Afiliação: |
STEEL S. VASCONCELOS, University of Florida; CLAUDIO JOSE REIS DE CARVALHO, CPATU. |
Título: |
Moisture and substrate availability constrain soil trace gas fluxes in an eastern Amazonian regrowth forest. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Global Biogeochemical Cycles, v. 18, n. 2, p. 1-10, Jun. 2004. |
DOI: |
10.1029/2003GB002210 |
Idioma: |
Inglês |
Conteúdo: |
Changes in land-use and climate are likely to alter moisture and substrate availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of soil trace gas fluxes is rather limited. The primary objective of this study was to quantify the effects of moisture and substrate availability on soil trace gas fluxes in an Amazonian regrowth forest. We measured the efflux of carbon dioxide (CO2), nitric oxide (NO), nitrous oxide (N2O), and methane (CH4) from soil in response to two experimental manipulations. In the first, we increased soil moisture availability during the dry season by irrigation; in the second, we decreased substrate availability by continuous removal of aboveground litter. In the absence of irrigation, soil CO2 efflux decreased during the dry season while irrigation maintained soil CO2 efflux levels similar to the wet season. Large variations in soil CO2 efflux consistent with a significant moisture constraint on respiration were observed in response to soil wet-up and dry-down events. Annual soil C efflux for irrigated plots was 27 and 13% higher than for control plots in 2001 and 2002, respectively. Litter removal significantly reduced soil CO2 efflux; annual soil C efflux in 2002 was 28% lower for litter removal plots compared to control plots. The annual soil C efflux:litterfall C ratio for the control treatment (4.0?5.2) was consistent with previously reported values for regrowth forests that indicate a relatively large belowground C allocation. In general, fluxes of N2O and CH4 were higher during the wet season and both fluxes increased during dry-season irrigation. There was no seasonal effect on NO fluxes. Litter removal had no significant impact on N oxide or CH4 emissions. Net soil nitrification did not respond to dry-season irrigation, but was somewhat reduced by litter removal. Overall, these results demonstrate significant soil moisture and substrate constraints on soil trace gas emissions, particularly for CO2, and suggest that climate and land-use changes that alter moisture and substrate availability are therefore likely to have an impact on atmosphere chemistry. MenosChanges in land-use and climate are likely to alter moisture and substrate availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of soil trace gas fluxes is rather limited. The primary objective of this study was to quantify the effects of moisture and substrate availability on soil trace gas fluxes in an Amazonian regrowth forest. We measured the efflux of carbon dioxide (CO2), nitric oxide (NO), nitrous oxide (N2O), and methane (CH4) from soil in response to two experimental manipulations. In the first, we increased soil moisture availability during the dry season by irrigation; in the second, we decreased substrate availability by continuous removal of aboveground litter. In the absence of irrigation, soil CO2 efflux decreased during the dry season while irrigation maintained soil CO2 efflux levels similar to the wet season. Large variations in soil CO2 efflux consistent with a significant moisture constraint on respiration were observed in response to soil wet-up and dry-down events. Annual soil C efflux for irrigated plots was 27 and 13% higher than for control plots in 2001 and 2002, respectively. Litter removal significantly reduced soil CO2 efflux; annual soil C efflux in 2002 was 28% lower for litter removal plots compared to control plots. The annual soil C efflux:litterfall C ratio for the control treatment (4.0?5.2) was consistent with previously reported values for regrowth forests that indicate a re... Mostrar Tudo |
Palavras-Chave: |
Brasil. |
Thesagro: |
Irrigação; Metano; Respiração do Solo; Teor de Umidade. |
Thesaurus Nal: |
Amazonia. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03200naa a2200349 a 4500 001 1408531 005 2022-11-28 008 2004 bl uuuu u00u1 u #d 024 7 $a10.1029/2003GB002210$2DOI 100 1 $aVASCONCELOS, S. S. 245 $aMoisture and substrate availability constrain soil trace gas fluxes in an eastern Amazonian regrowth forest.$h[electronic resource] 260 $c2004 520 $aChanges in land-use and climate are likely to alter moisture and substrate availability in tropical forest soils, but quantitative assessment of the role of resource constraints as regulators of soil trace gas fluxes is rather limited. The primary objective of this study was to quantify the effects of moisture and substrate availability on soil trace gas fluxes in an Amazonian regrowth forest. We measured the efflux of carbon dioxide (CO2), nitric oxide (NO), nitrous oxide (N2O), and methane (CH4) from soil in response to two experimental manipulations. In the first, we increased soil moisture availability during the dry season by irrigation; in the second, we decreased substrate availability by continuous removal of aboveground litter. In the absence of irrigation, soil CO2 efflux decreased during the dry season while irrigation maintained soil CO2 efflux levels similar to the wet season. Large variations in soil CO2 efflux consistent with a significant moisture constraint on respiration were observed in response to soil wet-up and dry-down events. Annual soil C efflux for irrigated plots was 27 and 13% higher than for control plots in 2001 and 2002, respectively. Litter removal significantly reduced soil CO2 efflux; annual soil C efflux in 2002 was 28% lower for litter removal plots compared to control plots. The annual soil C efflux:litterfall C ratio for the control treatment (4.0?5.2) was consistent with previously reported values for regrowth forests that indicate a relatively large belowground C allocation. In general, fluxes of N2O and CH4 were higher during the wet season and both fluxes increased during dry-season irrigation. There was no seasonal effect on NO fluxes. Litter removal had no significant impact on N oxide or CH4 emissions. Net soil nitrification did not respond to dry-season irrigation, but was somewhat reduced by litter removal. Overall, these results demonstrate significant soil moisture and substrate constraints on soil trace gas emissions, particularly for CO2, and suggest that climate and land-use changes that alter moisture and substrate availability are therefore likely to have an impact on atmosphere chemistry. 650 $aAmazonia 650 $aIrrigação 650 $aMetano 650 $aRespiração do Solo 650 $aTeor de Umidade 653 $aBrasil 700 1 $aZARIN, D. J. 700 1 $aCAPANU, M. 700 1 $aLITTELL, R. 700 1 $aDAVIDSON, E. A. 700 1 $aISHIDA, F. Y. 700 1 $aSANTOS, E. B. 700 1 $aARAÚJO, M. M. 700 1 $aARAGÃO, D. V. 700 1 $aRANGEL-VASCONCELOS, L. G. T. 700 1 $aOLIVEIRA, F. de A. 700 1 $aMCDOWELL, W. H. 700 1 $aCARVALHO, C. J. R. de 773 $tGlobal Biogeochemical Cycles$gv. 18, n. 2, p. 1-10, Jun. 2004.
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Embrapa Amazônia Oriental (CPATU) |
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Registros recuperados : 131 | |
3. | | REIS, E. M.; SANTOS, H. P.; RODRIGUES, N. J. Ocorrência do halo bacteriano da aveia (Avena sativa) no Brasil, causada por Pseudomonas syringae pv. coronafaciens. Fitopatologia Brasileira, Brasília, DF, v. 11, n. 3, p. 737-741, out. 1986.Biblioteca(s): Embrapa Trigo. |
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6. | | MAURI, R.; RODRIGUES, N. D.; BAPTISTA, R. B.; AGUIAR MENEZES, E. de L.; MENEZES, E. B. Estudo da eficiência de inseticidas no controle do cupim subterrâneo asiático, Coptotermes gestroi Wasmann na espécie florestal Eucaliptus sp In: JORNADA DE INICIAÇÃO CIENTÍFICA DA UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO, 18., 2008, Seropédica, RJ. Seropédica, RJ, 2008. Parceria: UFRRJTipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Agrobiologia. |
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7. | | TEIXEIRA, M. F. F.; RODRIGUES, N. C.; SILVA, W. T. da; KARAM, D. Efeito da aplicação pós-emergente do herbicida Halosulfuron-methyl em cultivares de sorgo sacarino e biomassa. In: CONGRESSO NACIONAL DE MILHO E SORGO, 30.; SIMPÓSIO SOBRE LEPDÓPTEROS COMUNS A MILHO, SOJA E ALGODÃO, 1., 2014, Salvador. Eficiência nas cadeias produtivas e o abastecimento global: resumos expandidos. Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2014. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Milho e Sorgo. |
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8. | | COLPO, M. M.; BANDEIRA, A. H.; EMYGDIO, B. M.; RODRIGUES, N. L.; GARCIA, D. F. Componentes tecnológicos de sorgo sacarino brs 509 em diferentes espaçamentos de entrelinhas, na depressão central do RS. In: SIMPÓSIO ESTADUAL DE AGROENERGIA; REUNIÃO TÉCNICA DE AGROENERGIA - RS, 5.; ENCONTRO DE ENERGIAS RENOVÁVEIS NA AGRICULTURA FAMILIAR, 2., Pelotas, 2014. Anais... Pelotas: Embrapa Clima Temperado, 2014. 1 pen card.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Clima Temperado. |
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10. | | SERAFIM, M. V.; BORGES, I.; GONCALVES, L. C.; RODRIGUES, N. M.; RODRIGUES, J. A. S. Desaparecimento in situ da materia seca, proteína bruta fribrosa das silagens de hibridos de sorghum (Sorghum bicolor (L). Moench). Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 52, n. 6, p. 634-640, 2000.Tipo: Artigo em Periódico Indexado |
Biblioteca(s): Embrapa Milho e Sorgo. |
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11. | | RODRIGUES, N. B.; SILVA, J. C. L. da; PINHEIRO, H. S. K.; CARVALHO JUNIOR, W. de. Digital mapping of Fe2O3, Nb and TiO2 contents in Morro dos Seis Lagos (AM). In: CONGRESSO LATINO-AMERICANO DE CIÊNCIA DO SOLO, 23.; CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 38., 2023, Florianópolis. Anais [...]. Florianópolis: Epagri, 2023. p. 104. Ref. ID 1073.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Solos. |
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12. | | BANDEIRA, A. H.; MEDEIROS, S. L. P.; EMYGDIO, B. M.; RODRIGUES, N. L.; LEAL, L. T. Filocrono de sorgo sacarino brs 506 cultivado em diferentes épocas de semeaduras na região central do Rio Grande do Sul. In: SIMPÓSIO ESTADUAL DE AGROENERGIA; REUNIÃO TÉCNICA DE AGROENERGIA - RS, 5.; ENCONTRO DE ENERGIAS RENOVÁVEIS NA AGRICULTURA FAMILIAR, 2., Pelotas, 2014. Anais... Pelotas: Embrapa Clima Temperado, 2014. 1 pen card.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Clima Temperado. |
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14. | | PESCE, D. M. C.; GONCALVES, L. C.; RODRIGUES, N. M.; BORGES, I.; RODRIGUES, J. A. S. Porcentagem, perda e digestibilidade in vitro da matéria seca das silagens de 20 genótipos de sorgo. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 52, n. 3, p. 250-255, 2000. ENACHI PESCE, D.M.Tipo: Artigo em Periódico Indexado |
Biblioteca(s): Embrapa Milho e Sorgo. |
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15. | | GOMES, T. C.; RODRIGUES, N. C.; REZENDE, L. A.; KARAM, D. Levantamento fitossociológico de plantas daninhas em sorgo sacarino semeado em diferentes espaçamentos e densidades. Cadernos de Agroecologia, Cruz Alta, v. 9, n. 4, 2014. Edição dos Resumos do 1º Seminário de Agroecologia da América do Sul, 5º Seminário de Agroecologia de Mato Grosso do Sul, 4º Encontro de Produtores Agroecológicos de Mato Grosso do Sul, 1º Seminário de Sistemas Agroflorestais em Bases...Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Milho e Sorgo. |
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20. | | JARDINE, J. G.; SUNDFELD, E.; DURÃES, F. O. M.; RODRIGUES, N. Sistema para organização e difusão de conhecimento em agroenergia: árvore do conhecimento agroenergia. In: CONFERENCIA IBEROAMERICANA EN SISTEMAS, CIBERNÉTICA E INFORMÁTICA, 9.; SIMPOSIM IBEROAMERICANO EN EDUCACIÓN, CIBERNÉTICA E INFORMÁTICA, 7., 2010, Orlando. Memórias... Orlando: INTERNATIONAL INSTITUTE OF INFORMATICS AND SYSTEMICS, 2010. p. 188-192. CISCI 2010.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Agricultura Digital. |
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Registros recuperados : 131 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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