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Registro Completo |
Biblioteca(s): |
Embrapa Trigo. |
Data corrente: |
03/09/1997 |
Data da última atualização: |
18/09/2013 |
Autoria: |
GASSEN, D. N. |
Afiliação: |
EMBRAPA-CNPT. |
Título: |
Bicho-bolo em plantio direto. |
Ano de publicação: |
1995 |
Fonte/Imprenta: |
Jornal do Plantio Direto, Passo Fundo, n. 26, p. 7, mar./abr. 1995. |
Idioma: |
Português |
Thesagro: |
Inseto. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00326naa a2200121 a 4500 001 1822901 005 2013-09-18 008 1995 bl uuuu u00u1 u #d 100 1 $aGASSEN, D. N. 245 $aBicho-bolo em plantio direto. 260 $c1995 650 $aInseto 773 $tJornal do Plantio Direto, Passo Fundo$gn. 26, p. 7, mar./abr. 1995.
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Embrapa Trigo (CNPT) |
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Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
04/07/2007 |
Data da última atualização: |
17/03/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
Autoria: |
ALVALÁ, R. C. S.; GIELOW, R.; ROCHA, H. R. da; FREITAS, H. C.; LOPES, J. M.; MANZI, A. O.; RANDOW, C. von; DIAS, M. A. F. S.; CABRAL, O. M. R.; WATERLOO, M. J. |
Afiliação: |
R. C. S. ALVALA, Instituto Nacional de Pesquisas Espaciais/SP; R. GIELOW, Instituto Nacional de Pesquisas Espaciais/SP; H. R. DA ROCHA,, USP/SP; H. C. FREITAS, USP/SP; J. M. LOPES, USP; A. O. MANZI,, Instituto Nacional de Pesquisas Espaciais/SP; C. VON RANDOW, Instituto Nacional de Pesquisas Espaciais; M. A. F. S. DIAS, USP; OSVALDO MACHADO RODRIGUES CABRAL, CNPMA; M. J. WATERLOO, Vrije Universiteit Amsterdam, Amsterdam, Netherlands. |
Título: |
Intradiurnal and seasonal variability of soil temperature, heat flux, soil moisture content, and thermal properties under forest and pasture in Rondônia. |
Ano de publicação: |
2002 |
Fonte/Imprenta: |
Journal of Geophysical Research, Washington, v. 107, n. D20, p. LBA10-1 - LBA 10-20, 2002. |
Idioma: |
Inglês |
Conteúdo: |
Soil temperatures depend on the soil heat flux, an important parameter in meteorological and plant growth-energy balance models. Thus, they were measured, together with soil moisture contents, within the LBA program at forest (Reserva Jaru) and pasture (Fazenda Nossa Senhora) sites in Rondônia, Brazilian Amazonia during wet (February) and dry (August) periods of 1999. The wet period showed maxima of the heat flux into the soil around five to six times smaller at the forest than at the pasture, except for some spikes that are related to stronger solar forcing, such as those due to sunspecks in the forest. This pattern remained during the dry period, but with doubled maximum values. Also, the soil heat flux and the soil temperatures responded very significantly to the passage of cold fronts in both periods at both sites. Temperature profiles measured in the 0.10-0.40 m soil layer showed daily averages and ranges smaller at the forest than at the pasture. The daily average of the soil moisture content in the same layer, during the wet season, increased with depth at both sites, with consistently lower values at the forest. However, their ranges were smaller at the pasture, except for the 0.40 m depth. During the dry period, these ranges were much higher at the pasture, but with nearer average values. Finally, the computed daily apparent soil thermal diffusivities, volumetric heat contents, and thermal conductivities are presented, with the first ones crossed with the measured soil moisture content. MenosSoil temperatures depend on the soil heat flux, an important parameter in meteorological and plant growth-energy balance models. Thus, they were measured, together with soil moisture contents, within the LBA program at forest (Reserva Jaru) and pasture (Fazenda Nossa Senhora) sites in Rondônia, Brazilian Amazonia during wet (February) and dry (August) periods of 1999. The wet period showed maxima of the heat flux into the soil around five to six times smaller at the forest than at the pasture, except for some spikes that are related to stronger solar forcing, such as those due to sunspecks in the forest. This pattern remained during the dry period, but with doubled maximum values. Also, the soil heat flux and the soil temperatures responded very significantly to the passage of cold fronts in both periods at both sites. Temperature profiles measured in the 0.10-0.40 m soil layer showed daily averages and ranges smaller at the forest than at the pasture. The daily average of the soil moisture content in the same layer, during the wet season, increased with depth at both sites, with consistently lower values at the forest. However, their ranges were smaller at the pasture, except for the 0.40 m depth. During the dry period, these ranges were much higher at the pasture, but with nearer average values. Finally, the computed daily apparent soil thermal diffusivities, volumetric heat contents, and thermal conductivities are presented, with the first ones crossed with the measured s... Mostrar Tudo |
Palavras-Chave: |
Fluxo de calor; Variabilidade. |
Thesagro: |
Balanço de Energia; Floresta; Pastagem; Temperatura do Solo; Umidade do Solo. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/163809/1/Alvala-Intradiurnal-6959.pdf
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Marc: |
LEADER 02534naa a2200325 a 4500 001 1015531 005 2021-03-17 008 2002 bl uuuu u00u1 u #d 100 1 $aALVALÁ, R. C. S. 245 $aIntradiurnal and seasonal variability of soil temperature, heat flux, soil moisture content, and thermal properties under forest and pasture in Rondônia.$h[electronic resource] 260 $c2002 520 $aSoil temperatures depend on the soil heat flux, an important parameter in meteorological and plant growth-energy balance models. Thus, they were measured, together with soil moisture contents, within the LBA program at forest (Reserva Jaru) and pasture (Fazenda Nossa Senhora) sites in Rondônia, Brazilian Amazonia during wet (February) and dry (August) periods of 1999. The wet period showed maxima of the heat flux into the soil around five to six times smaller at the forest than at the pasture, except for some spikes that are related to stronger solar forcing, such as those due to sunspecks in the forest. This pattern remained during the dry period, but with doubled maximum values. Also, the soil heat flux and the soil temperatures responded very significantly to the passage of cold fronts in both periods at both sites. Temperature profiles measured in the 0.10-0.40 m soil layer showed daily averages and ranges smaller at the forest than at the pasture. The daily average of the soil moisture content in the same layer, during the wet season, increased with depth at both sites, with consistently lower values at the forest. However, their ranges were smaller at the pasture, except for the 0.40 m depth. During the dry period, these ranges were much higher at the pasture, but with nearer average values. Finally, the computed daily apparent soil thermal diffusivities, volumetric heat contents, and thermal conductivities are presented, with the first ones crossed with the measured soil moisture content. 650 $aAmazonia 650 $aBalanço de Energia 650 $aFloresta 650 $aPastagem 650 $aTemperatura do Solo 650 $aUmidade do Solo 653 $aFluxo de calor 653 $aVariabilidade 700 1 $aGIELOW, R. 700 1 $aROCHA, H. R. da 700 1 $aFREITAS, H. C. 700 1 $aLOPES, J. M. 700 1 $aMANZI, A. O. 700 1 $aRANDOW, C. von 700 1 $aDIAS, M. A. F. S. 700 1 $aCABRAL, O. M. R. 700 1 $aWATERLOO, M. J. 773 $tJournal of Geophysical Research, Washington$gv. 107, n. D20, p. LBA10-1 - LBA 10-20, 2002.
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