| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
26/06/2013 |
|
Data da última atualização: |
07/11/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
TELLES, E. de C. C.; CAMARGO, P. B. de; MARTINELLI, L. A.; TRUMBORE, S. E.; COSTA, E. S. da; SANTOS, J.; HIGUCHI, N.; OLIVEIRA JUNIOR, R. C. |
|
Afiliação: |
Everaldo de Carvalho Conceição Telles, CENA/USP; Plínio Barbosa de Camargo, CENA/USP; Luiz A. Martinelli, CENA/USP; Susan E. Trumbore, University of California; Enir Salazar da Costa, University of California; JOAQUIM SANTOS, INPA; Niro Higuchi, INPA; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU. |
|
Título: |
Influence of soil texture on carbon dynamics and storage potential in tropical forest soils of Amazonia. |
|
Ano de publicação: |
2003 |
|
Fonte/Imprenta: |
Global Biogeochemical Cycles, v. 17, n. 2, Jun. 2003. |
|
DOI: |
10.1029/2002GB001953 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Stable and radiocarbon isotopes were used to investigate the role of soil clay content in the storage and dynamics of soil carbon in tropical forest soils. Organic matter in clay-rich Oxisols and Ultisols contains at least two distinct components: (1) material with light δ13C signatures and turnover times of decades or less; and (2) clay-associated, 13C-enriched, carbon with turnover times of decades at the surface to millennia at depths >20 cm. Soil texture, in this case clay content, exerts a major control on the amount of slowly cycling carbon and therefore influences the storage and dynamics of carbon in tropical forest soils. Soils in primary tropical forest have been proposed as a potentially large sink for anthropogenic carbon. Comparison of carbon stocks in Oxisols sampled near Manaus, Brazil, shows no measurable change in organic carbon stocks over the past 20 years. Simple models estimating the response of soil carbon pools to a sustained 0.5% yr−1 increase in productivity result in C storage rates of 0.09 to 0.13 MgC ha−1 yr8722;1 in soil organic matter, with additional potential storage of 0.18 to 0.27 MgC ha−1 yr−1 in surface litter and roots. Most storage occurs in organic matter pools with turnover times less than a decade. Export of carbon in dissolved form from upland terra firme Oxisols likely accounts for <0.2 MgC ha8722;1 yr8722;1, but more work is required to assess the export potential for periodically inundated Spodosols. |
|
Palavras-Chave: |
Ciclo de carbono. |
|
Thesagro: |
Carbono; Decomposição; Solo; Solo Tropical; Textura. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02342naa a2200289 a 4500
001 1960656
005 2022-11-07
008 2003 bl uuuu u00u1 u #d
024 7 $a10.1029/2002GB001953$2DOI
100 1 $aTELLES, E. de C. C.
245 $aInfluence of soil texture on carbon dynamics and storage potential in tropical forest soils of Amazonia.$h[electronic resource]
260 $c2003
520 $aStable and radiocarbon isotopes were used to investigate the role of soil clay content in the storage and dynamics of soil carbon in tropical forest soils. Organic matter in clay-rich Oxisols and Ultisols contains at least two distinct components: (1) material with light δ13C signatures and turnover times of decades or less; and (2) clay-associated, 13C-enriched, carbon with turnover times of decades at the surface to millennia at depths >20 cm. Soil texture, in this case clay content, exerts a major control on the amount of slowly cycling carbon and therefore influences the storage and dynamics of carbon in tropical forest soils. Soils in primary tropical forest have been proposed as a potentially large sink for anthropogenic carbon. Comparison of carbon stocks in Oxisols sampled near Manaus, Brazil, shows no measurable change in organic carbon stocks over the past 20 years. Simple models estimating the response of soil carbon pools to a sustained 0.5% yr−1 increase in productivity result in C storage rates of 0.09 to 0.13 MgC ha−1 yr8722;1 in soil organic matter, with additional potential storage of 0.18 to 0.27 MgC ha−1 yr−1 in surface litter and roots. Most storage occurs in organic matter pools with turnover times less than a decade. Export of carbon in dissolved form from upland terra firme Oxisols likely accounts for <0.2 MgC ha8722;1 yr8722;1, but more work is required to assess the export potential for periodically inundated Spodosols.
650 $aCarbono
650 $aDecomposição
650 $aSolo
650 $aSolo Tropical
650 $aTextura
653 $aCiclo de carbono
700 1 $aCAMARGO, P. B. de
700 1 $aMARTINELLI, L. A.
700 1 $aTRUMBORE, S. E.
700 1 $aCOSTA, E. S. da
700 1 $aSANTOS, J.
700 1 $aHIGUCHI, N.
700 1 $aOLIVEIRA JUNIOR, R. C.
773 $tGlobal Biogeochemical Cycles$gv. 17, n. 2, Jun. 2003.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 163 | |
| 2. |  | MORAES, S. A. de. Suplementação alimentar. In: SEMANA ITINERANTE PROJETO LAGO DE SOBRADINHO, 1., 2014, Petrolina. Palestras... Petrolina: Embrapa Semiárido, 2014. 1 CD ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
|    |
| 13. | | NOGUEIRA, D. M.; MORAES, S. A. de; NASCIMENTO, T. V. C.; MACEDO, M. M. Fortalecimento da ovinocultura de corte no Município de Dormentes, Alto Sertão de Pernambuco. In: CONGRESSO BRASILEIRO DE AGROECOLOGIA, 6.; CONGRESSO LATINO-AMERICANO DE AGROECOLOGIA, 2., 2009, Curitiba. Anais: agricultura familiar e camponesa: experiências passadas e presentes construindo um futuro sustentável Curitiba: ABA: SOCLA, 2009. 1 CD-ROM. Publicado também na Revista Brasileira de Agroecologia, v. 4, n. 2, 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 14. | | SIGNOR, D.; MORAES, S. A. de; OLIVEIRA, R. G.; DEON, M. D.; LIMA, L. F. Gliricidia sepium seedlings development due to biochar and manure application. In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 3., 2015, Brasília, DF. Towards sustainable intensification: proceedings. Brasília, DF: Embrapa, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 15. | | MACEDO, A.; LAURENTINO, A. B.; SIGNOR, D.; MORAES, S. A. de; FERNANDES JUNIOR, P. I. Efeitos de biocarvão e noculante sobre o desenvolvimento e a nodulação de mudas de Gliricidia sepium (Jacq.) Walp. In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 11., 2016, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2016. p. 211-216. 1 CD-ROM. (Embrapa Semiárido. Documentos, 271).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| 18. | | MEDEIROS, T. A. F.; SIGNOR, D.; MORAES, S. A. de; GIORDANO, L A. Greenhouse gases fluxes in Semiarid of Pernambuco. In: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa, 2016. p. 445-446.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Semiárido. |
| |
| Registros recuperados : 163 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
