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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
25/11/1996 |
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Data da última atualização: |
18/02/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ROBERTS, J.; CABRAL, O. M. R.; AGUIAR, L. F. de. |
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Afiliação: |
Institute of Hydrology; EMBRAPA-CNPSD; Universidade do Amazonas-UA.; OSVALDO MACHADO RODRIGUES CABRAL, CNPSD. |
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Título: |
Stomatal and boundary-layer conductances in an Amazonian terra firme rain forest. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Journal of Applied Ecology, v. 27, n. 1, p. 336-356, 1990. |
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Idioma: |
Inglês |
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Conteúdo: |
Diurnal measurements of stomatal conductance (gs) and boundary layer conductance (gs) were made through the canopy at a primary rain forest site in the Amazon Basin, Brazil, in three experimental seasons and over a range of soil water conditions. Maximum values of gs were observed near the top of the 40 m deep canopy and they declined towards the forest floor. Observed values of gs also decreased through the canopy, but a slight maximum occurred 20 m from the ground. In the upper part of the tree canopy the diurnal maximum in gs occurred in the mid-morning and the value declined for the ramainder of the day. This peak was less marked lower in the canopy, and was not present near the forest floor. gs was correlated negatively with specific humidity deficid (D)and positively with solar radiation (S). The response of gs to D increased with increasing S at all but the highest values of S. The lowest values of gs occurred at the same time as the lowest soil water potentials although these corresponded to only moderate soil water deficits. |
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Palavras-Chave: |
Brasil; Energy partition; Precipitacao fluvial; Radiation; Rainfall interception; Tropical rain forest. |
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Thesagro: |
Água; Chuva; Floresta Tropical Úmida; Microclima; Radiação; Solo. |
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Thesaurus Nal: |
Amazonia; canopy; microclimate; soil water content. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01965naa a2200337 a 4500
001 1667263
005 2020-02-18
008 1990 bl uuuu u00u1 u #d
100 1 $aROBERTS, J.
245 $aStomatal and boundary-layer conductances in an Amazonian terra firme rain forest.$h[electronic resource]
260 $c1990
520 $aDiurnal measurements of stomatal conductance (gs) and boundary layer conductance (gs) were made through the canopy at a primary rain forest site in the Amazon Basin, Brazil, in three experimental seasons and over a range of soil water conditions. Maximum values of gs were observed near the top of the 40 m deep canopy and they declined towards the forest floor. Observed values of gs also decreased through the canopy, but a slight maximum occurred 20 m from the ground. In the upper part of the tree canopy the diurnal maximum in gs occurred in the mid-morning and the value declined for the ramainder of the day. This peak was less marked lower in the canopy, and was not present near the forest floor. gs was correlated negatively with specific humidity deficid (D)and positively with solar radiation (S). The response of gs to D increased with increasing S at all but the highest values of S. The lowest values of gs occurred at the same time as the lowest soil water potentials although these corresponded to only moderate soil water deficits.
650 $aAmazonia
650 $acanopy
650 $amicroclimate
650 $asoil water content
650 $aÁgua
650 $aChuva
650 $aFloresta Tropical Úmida
650 $aMicroclima
650 $aRadiação
650 $aSolo
653 $aBrasil
653 $aEnergy partition
653 $aPrecipitacao fluvial
653 $aRadiation
653 $aRainfall interception
653 $aTropical rain forest
700 1 $aCABRAL, O. M. R.
700 1 $aAGUIAR, L. F. de
773 $tJournal of Applied Ecology$gv. 27, n. 1, p. 336-356, 1990.
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