| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amapá; Embrapa Solos. |
|
Data corrente: |
22/11/2002 |
|
Data da última atualização: |
03/03/2020 |
|
Autoria: |
FALESI, I. C.; CRUZ, E. de S.; SILVA, B. N. R. da; ARAÚJO, J. V.; SANTOS, H. G. dos; MAGALHÃES, J. C. A. J. de. |
|
Afiliação: |
HUMBERTO GONCALVES DOS SANTOS, CNPS. |
|
Título: |
Contribuição ao estudo dos solos de Altamira: (região fisiográfica do Xingú). |
|
Ano de publicação: |
1967 |
|
Fonte/Imprenta: |
Belém, PA: IPEAN, 1967. |
|
Páginas: |
47 p. |
|
Série: |
(IPEAN. Circular, 10). |
|
Idioma: |
Português |
|
Conteúdo: |
O presente trabalho foi executado na Zona Fisiográfica do Xingu, município de Altamira, localidades de Maria Bonita, Cachoeirinha, Panelas e Vitoria no Estado do Para. O estudo feito, de caráter exploratório, tem por finalidade trazer subsídios ao conhecimento dos solos regionais, bem como, fornecer dados para a implantação de futuros empreendimentos agro-pastoris. O relevo varia desde o plano ao ondulado, sendo que este fator pedogenético mantém estreita relação com os solos encontrados. O clima de Altamira, segundo a classificação de Koppen, e do tipo Aw, caracterizado por apresentar uma estação seca no inverno, tendo pelo menos um mês com precipitação inferior a 60 mm durante o ano. A cobertura vegetal e do tipo floresta equatorial úmida, ocorrendo também vegetação de campo e de capoeira em diversos estágios de desenvolvimento. Os solos encontrados em Altamira, possuem fertilidade natural que varia de baixa a alta. Os de alta fertilidade, são originados a partir de rochas básicas, razão pela qual possibilitam uma exploração agrícola prolongada, como consequência do intemperismo das rochas que ainda hoje de processa, condicionando a liberação de nutrientes para as plantas. Dentre os solos encontrados, podemos mencionar: Latosol Amarelo, Lateritico Bruno Avermelhado, Podzolico Vermelho Amarelo e Solos Hidromorficos. |
|
Palavras-Chave: |
Altamira; Brasil; Brown lateritic soil; Classificacao; Hidromorphic soil; Lateritico brumo avermelhado; Latosol amarelo; Pará; Podzolic soil; Red yellow; Reddish; Survey; Yellow latosol; Zona do Xingu. |
|
Thesagro: |
Clima; Geologia; Levantamento; Podzólico Vermelho Amarelo; Relevo; Solo; Solo Hidromórfico; Vegetação. |
|
Thesaurus Nal: |
Amazonia; classification; climate; geology; soil; Soil surveys; vegetation. |
|
Categoria do assunto: |
--
P Recursos Naturais, Ciências Ambientais e da Terra |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/162579/1/FL01816-.pdf
|
|
Marc: |
LEADER 02734nam a2200541 a 4500
001 1327438
005 2020-03-03
008 1967 bl uuuu u0uu1 u #d
100 1 $aFALESI, I. C.
245 $aContribuição ao estudo dos solos de Altamira$b(região fisiográfica do Xingú).
260 $aBelém, PA: IPEAN$c1967
300 $a47 p.
490 $a(IPEAN. Circular, 10).
520 $aO presente trabalho foi executado na Zona Fisiográfica do Xingu, município de Altamira, localidades de Maria Bonita, Cachoeirinha, Panelas e Vitoria no Estado do Para. O estudo feito, de caráter exploratório, tem por finalidade trazer subsídios ao conhecimento dos solos regionais, bem como, fornecer dados para a implantação de futuros empreendimentos agro-pastoris. O relevo varia desde o plano ao ondulado, sendo que este fator pedogenético mantém estreita relação com os solos encontrados. O clima de Altamira, segundo a classificação de Koppen, e do tipo Aw, caracterizado por apresentar uma estação seca no inverno, tendo pelo menos um mês com precipitação inferior a 60 mm durante o ano. A cobertura vegetal e do tipo floresta equatorial úmida, ocorrendo também vegetação de campo e de capoeira em diversos estágios de desenvolvimento. Os solos encontrados em Altamira, possuem fertilidade natural que varia de baixa a alta. Os de alta fertilidade, são originados a partir de rochas básicas, razão pela qual possibilitam uma exploração agrícola prolongada, como consequência do intemperismo das rochas que ainda hoje de processa, condicionando a liberação de nutrientes para as plantas. Dentre os solos encontrados, podemos mencionar: Latosol Amarelo, Lateritico Bruno Avermelhado, Podzolico Vermelho Amarelo e Solos Hidromorficos.
650 $aAmazonia
650 $aclassification
650 $aclimate
650 $ageology
650 $asoil
650 $aSoil surveys
650 $avegetation
650 $aClima
650 $aGeologia
650 $aLevantamento
650 $aPodzólico Vermelho Amarelo
650 $aRelevo
650 $aSolo
650 $aSolo Hidromórfico
650 $aVegetação
653 $aAltamira
653 $aBrasil
653 $aBrown lateritic soil
653 $aClassificacao
653 $aHidromorphic soil
653 $aLateritico brumo avermelhado
653 $aLatosol amarelo
653 $aPará
653 $aPodzolic soil
653 $aRed yellow
653 $aReddish
653 $aSurvey
653 $aYellow latosol
653 $aZona do Xingu
700 1 $aCRUZ, E. de S.
700 1 $aSILVA, B. N. R. da
700 1 $aARAÚJO, J. V.
700 1 $aSANTOS, H. G. dos
700 1 $aMAGALHÃES, J. C. A. J. de
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
19/02/2010 |
|
Data da última atualização: |
31/08/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
BARRETO, R. C.; MADARI, B. E.; MADDOCK, J. E. L.; MACHADO, P. L. O. A.; TORRES, E.; FRANCHINI, J.; COSTA, A. R. |
|
Afiliação: |
RENATA C. BARRETO, UFF; BEATA EMOKE MADARI, CNPAF; JOHN E. L. MADDOCK, UFF; PEDRO LUIZ OLIVEIRA DE A MACHADO, CNPAF; ELENO TORRES, CNPSo; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSo; ADRIANA R. COSTA, CNPSo. |
|
Título: |
The impact of soil management on aggregation, carbon stabilization and carbon loss as CO2 in the surface layer of a Rhodic Ferralsol in Southern Brazil. |
|
Ano de publicação: |
2009 |
|
Fonte/Imprenta: |
Agriculture, Ecosystems & Environment , Amsterdam, v. 132, n. 3-4. p. 243-251, ago. 2009. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Soil aggregation and organic carbon accumulation are two intrinsically linked phenomena. Soils under natural vegetation and conservation tillage systems generally have higher aggregation indices and total organic carbon (TOC) stocks in the surface layers than soils under conventional management (ploughing). Fromthe point of viewof the emission of carbondioxide (CO2), C stabilization and loss in the surface layer is relevant. The objective of this study was to investigate the effect of no-tillage (NT) and conventional tillage (CT) on TOC stabilization and loss through soil aggregation in the topsoil. Soil aggregation, TOC stocks, and fluxes of CO2 of samples from a Rhodic Ferralsol under NT and CT in a long-term field experiment in Southern Brazil were measured. A natural forest site was also evaluated as reference to the management sites.Emissions ofCO2weremeasured in laboratory incubation experiment on bulk soilsamples and on soil aggregate size fractions, previously separated by dry sieving, in intact and destroyed (crushed to <0.250 mm) state. The soil under NT had larger aggregates and larger proportion of the soil in greater aggregate size classes than CT. Total organic carbon stocks were higher under NT both in bulk soil samples and macroaggregates than under CT. Under laboratory conditions the bulk soil samples from NT showed higher emission rates of CO2 (CO2BS = 18.3 kg C ha-1 h-1) than from CT (CO2BS = 2.3 kg C ha-1 h-1) due to the overall higher TOC stocks. The TOC that was lost by CO2 emission due to the oxidation of readily decomposable macroaggregate-protected SOM in NT (SDCO2 = 79.4 kg C ha-1 h-1) was, however, also higher than under CT (CT:SDCO2 = 29.1 kg C ha-1 h-1). TheTOCstabilized bymacroaggregation inNTwas also more than the TOC lost by CO2 emission from the bulk soil (SDCO2-CO2BS = 61.1 kg C ha-1 h-1), and the difference between these two washigher underNTthan under CT (SDCO2-CO2BS = 26.8 kg C ha-1 h-1), showing that NT in fact accumulates more TOC in the soil by protecting it within themacroaggregates. The natural forest had higher TOC stock and emission rates than the tilled soils, however it also stabilized more TOC. Thus, no-tillage in its effect on carbon stabilization, is between the natural ecosystem and CT, representing a soilmanagement system that seemsto be an efficient on thewaypath to the recuperation of soil after conventional management systems. MenosSoil aggregation and organic carbon accumulation are two intrinsically linked phenomena. Soils under natural vegetation and conservation tillage systems generally have higher aggregation indices and total organic carbon (TOC) stocks in the surface layers than soils under conventional management (ploughing). Fromthe point of viewof the emission of carbondioxide (CO2), C stabilization and loss in the surface layer is relevant. The objective of this study was to investigate the effect of no-tillage (NT) and conventional tillage (CT) on TOC stabilization and loss through soil aggregation in the topsoil. Soil aggregation, TOC stocks, and fluxes of CO2 of samples from a Rhodic Ferralsol under NT and CT in a long-term field experiment in Southern Brazil were measured. A natural forest site was also evaluated as reference to the management sites.Emissions ofCO2weremeasured in laboratory incubation experiment on bulk soilsamples and on soil aggregate size fractions, previously separated by dry sieving, in intact and destroyed (crushed to <0.250 mm) state. The soil under NT had larger aggregates and larger proportion of the soil in greater aggregate size classes than CT. Total organic carbon stocks were higher under NT both in bulk soil samples and macroaggregates than under CT. Under laboratory conditions the bulk soil samples from NT showed higher emission rates of CO2 (CO2BS = 18.3 kg C ha-1 h-1) than from CT (CO2BS = 2.3 kg C ha-1 h-1) due to the overall higher TOC stocks. The TOC... Mostrar Tudo |
|
Thesagro: |
Manejo do solo; Plantio direto. |
|
Thesaurus NAL: |
conventional tillage; No-tillage; Soil aggregation; Soil management. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 03268naa a2200265 a 4500
001 1658244
005 2017-08-31
008 2009 bl --- 0-- u #d
100 1 $aBARRETO, R. C.
245 $aThe impact of soil management on aggregation, carbon stabilization and carbon loss as CO2 in the surface layer of a Rhodic Ferralsol in Southern Brazil.
260 $c2009
520 $aSoil aggregation and organic carbon accumulation are two intrinsically linked phenomena. Soils under natural vegetation and conservation tillage systems generally have higher aggregation indices and total organic carbon (TOC) stocks in the surface layers than soils under conventional management (ploughing). Fromthe point of viewof the emission of carbondioxide (CO2), C stabilization and loss in the surface layer is relevant. The objective of this study was to investigate the effect of no-tillage (NT) and conventional tillage (CT) on TOC stabilization and loss through soil aggregation in the topsoil. Soil aggregation, TOC stocks, and fluxes of CO2 of samples from a Rhodic Ferralsol under NT and CT in a long-term field experiment in Southern Brazil were measured. A natural forest site was also evaluated as reference to the management sites.Emissions ofCO2weremeasured in laboratory incubation experiment on bulk soilsamples and on soil aggregate size fractions, previously separated by dry sieving, in intact and destroyed (crushed to <0.250 mm) state. The soil under NT had larger aggregates and larger proportion of the soil in greater aggregate size classes than CT. Total organic carbon stocks were higher under NT both in bulk soil samples and macroaggregates than under CT. Under laboratory conditions the bulk soil samples from NT showed higher emission rates of CO2 (CO2BS = 18.3 kg C ha-1 h-1) than from CT (CO2BS = 2.3 kg C ha-1 h-1) due to the overall higher TOC stocks. The TOC that was lost by CO2 emission due to the oxidation of readily decomposable macroaggregate-protected SOM in NT (SDCO2 = 79.4 kg C ha-1 h-1) was, however, also higher than under CT (CT:SDCO2 = 29.1 kg C ha-1 h-1). TheTOCstabilized bymacroaggregation inNTwas also more than the TOC lost by CO2 emission from the bulk soil (SDCO2-CO2BS = 61.1 kg C ha-1 h-1), and the difference between these two washigher underNTthan under CT (SDCO2-CO2BS = 26.8 kg C ha-1 h-1), showing that NT in fact accumulates more TOC in the soil by protecting it within themacroaggregates. The natural forest had higher TOC stock and emission rates than the tilled soils, however it also stabilized more TOC. Thus, no-tillage in its effect on carbon stabilization, is between the natural ecosystem and CT, representing a soilmanagement system that seemsto be an efficient on thewaypath to the recuperation of soil after conventional management systems.
650 $aconventional tillage
650 $aNo-tillage
650 $aSoil aggregation
650 $aSoil management
650 $aManejo do solo
650 $aPlantio direto
700 1 $aMADARI, B. E.
700 1 $aMADDOCK, J. E. L.
700 1 $aMACHADO, P. L. O. A.
700 1 $aTORRES, E.
700 1 $aFRANCHINI, J.
700 1 $aCOSTA, A. R.
773 $tAgriculture, Ecosystems & Environment , Amsterdam$gv. 132, n. 3-4. p. 243-251, ago. 2009.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
