|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
|
Data corrente: |
06/01/1997 |
|
Data da última atualização: |
16/01/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
ROBERTS, J.; CABRAL, O. M. R.; FISCH, G.; MOLION, L. C. B.; MOORE, C. J.; SHUTTLEWORTH, W. J. |
|
Afiliação: |
Institute of Hydrology; EMBRAPA-CPAA; INPE.; OSVALDO M. R. CABRAL, CPAA. |
|
Título: |
Transpiration from an Amazonian rainforest calculated from stomatal conductance measurements. |
|
Ano de publicação: |
1993 |
|
Fonte/Imprenta: |
Agricultural and Forest Meteorology, v. 65, n. 3-4, p. 175-196, 1993. |
|
DOI: |
http://dx.doi.org/10.1016/0168-1923(93)90003-Z |
|
Idioma: |
Inglês |
|
Conteúdo: |
A multi-layer combination equation has been used to calculate transpiration from a tropical rainforest in the central Amazon, Brazil. The five-layer formulation used through-canopy measurements of temperature and humidity deficit with leaf stomatal and boundary layer conductances scaled up to canopy layer values used a profile of canopy leaf area index derived from the literature. Net radiation input to each layer values was estimated from an above canopy measurement using an extinction function and leaf area index. Transpiration calculated for hourly and daily periods in a range of seasonal condition agreed well with those measured directly with and eddy correlation device. Four simplified forms of the transpiration calculation were also compared with the direct measurement. These simplified forms used the above-canopy or the average of the through-canopy values of weather variables and use either the average of leaf conductances multiplied by total leaf area index or the average of the layer conductances. These simplified forms of the tanspirations calculation gave poorer agreement with measured transpiration. |
|
Palavras-Chave: |
Amazonas; Brasil; Carbon dioxide content; Floresta tropial umida; Radiation balance; Transpiracao; Tropical rain forest. |
|
Thesagro: |
Dióxido de Carbono; Energia; Evapotranspiração; Meteorologia; Radiação. |
|
Thesaurus Nal: |
energy; evapotranspiration; meteorology; transpiration. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/146163/1/S7906.pdf
|
|
Marc: |
LEADER 02232naa a2200385 a 4500
001 1667264
005 2017-01-16
008 1993 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/0168-1923(93)90003-Z$2DOI
100 1 $aROBERTS, J.
245 $aTranspiration from an Amazonian rainforest calculated from stomatal conductance measurements.
260 $c1993
520 $aA multi-layer combination equation has been used to calculate transpiration from a tropical rainforest in the central Amazon, Brazil. The five-layer formulation used through-canopy measurements of temperature and humidity deficit with leaf stomatal and boundary layer conductances scaled up to canopy layer values used a profile of canopy leaf area index derived from the literature. Net radiation input to each layer values was estimated from an above canopy measurement using an extinction function and leaf area index. Transpiration calculated for hourly and daily periods in a range of seasonal condition agreed well with those measured directly with and eddy correlation device. Four simplified forms of the transpiration calculation were also compared with the direct measurement. These simplified forms used the above-canopy or the average of the through-canopy values of weather variables and use either the average of leaf conductances multiplied by total leaf area index or the average of the layer conductances. These simplified forms of the tanspirations calculation gave poorer agreement with measured transpiration.
650 $aenergy
650 $aevapotranspiration
650 $ameteorology
650 $atranspiration
650 $aDióxido de Carbono
650 $aEnergia
650 $aEvapotranspiração
650 $aMeteorologia
650 $aRadiação
653 $aAmazonas
653 $aBrasil
653 $aCarbon dioxide content
653 $aFloresta tropial umida
653 $aRadiation balance
653 $aTranspiracao
653 $aTropical rain forest
700 1 $aCABRAL, O. M. R.
700 1 $aFISCH, G.
700 1 $aMOLION, L. C. B.
700 1 $aMOORE, C. J.
700 1 $aSHUTTLEWORTH, W. J.
773 $tAgricultural and Forest Meteorology$gv. 65, n. 3-4, p. 175-196, 1993.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
