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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
15/03/2005 |
Data da última atualização: |
02/02/2011 |
Autoria: |
FELIX, D. dos S.; MARQUES, P. de F. O.; GARCIA, S. O. |
Título: |
Coletânea de resumos de artigos técnico-científicos publicados pela equipe da Embrapa Agrobiologia e outras instituições-2001 / Collection of abstracts scientific papers published by the team of Embrapa Agrobiologia and others institutions-2001. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Seropédica: Embrapa Agrobiologia, 2004. |
Páginas: |
75 p. |
Série: |
(Embrapa Agrobiologia. Documentos, 176). |
ISSN: |
1517-8498 |
Idioma: |
Português |
Palavras-Chave: |
Abstracts; Publicação; Publication; Resumos. |
Thesagro: |
Agricultura; Pesquisa. |
Thesaurus Nal: |
agriculture; research. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00863nam a2200253 a 4500 001 1627832 005 2011-02-02 008 2004 bl uuuu u0uu1 u #d 022 $a1517-8498 100 1 $aFELIX, D. dos S. 245 $aColetânea de resumos de artigos técnico-científicos publicados pela equipe da Embrapa Agrobiologia e outras instituições-2001 / Collection of abstracts scientific papers published by the team of Embrapa Agrobiologia and others institutions-2001. 260 $aSeropédica: Embrapa Agrobiologia$c2004 300 $a75 p. 490 $a(Embrapa Agrobiologia. Documentos, 176). 650 $aagriculture 650 $aresearch 650 $aAgricultura 650 $aPesquisa 653 $aAbstracts 653 $aPublicação 653 $aPublication 653 $aResumos 700 1 $aMARQUES, P. de F. O. 700 1 $aGARCIA, S. O.
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Embrapa Agrobiologia (CNPAB) |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
05/09/2017 |
Data da última atualização: |
27/02/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
C - 0 |
Autoria: |
SOUZA, L. S. B. de; MOURA, M. S. B. de; SEDIYAMA, G. C.; SILVA, T. G. F. da. |
Afiliação: |
LUCIANA SANDRA BASTOS DE SOUZA, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, PE; MAGNA SOELMA BESERRA DE MOURA, CPATSA; GILBERTO CHOHAKU SEDIYAMA, UFV; THIERES GEORGE FREIRE DA SILVA, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, PE. |
Título: |
Carbon exchange in a Caatinga area during an unusually drought year. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Agrometeoros, Passo Fundo, v. 25, n. 1, p. 37-45, ago. 2017. |
Idioma: |
Inglês |
Conteúdo: |
The objective of this study was to analyze the daily and seasonal variation of the carbon balance components in a caatinga area during an unusually drought year. Data were collected from a turbulent vortices covariance system installed at an area in Caatinga, in the region of Petrolina Municipality, State of Pernambuco, Brazil. Carbon dioxide flux data were collected in the year 2012, and the partitioning between gross primary productivity (GPP) and ecosystem respiration (Re). The vegetation cover index, weather elements and the soil water content were monitored. It was observed that the daily emissions of CO2 flux was dependent upon photosynthetically active radiation in the first days after rainfall events, being influenced by the water vapor pressure deficit with the reduction in the soil water content. The occurrence of up to 2 mm rainfall promoted peaks of Re after long periods of drought. The measured NEP was equal to 468.18 gC m-2 year-1. So, it is concluded that in years with severe drought, Caatinga may act as a source of carbon to the atmosphere. |
Palavras-Chave: |
Dry forest; Semiárido; Turbulent vortices covariance. |
Thesagro: |
Dióxido de carbono; Floresta; Resistência a Seca; Seca. |
Thesaurus NAL: |
Carbon dioxide. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/163425/1/Magna-1.pdf
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Marc: |
LEADER 01803naa a2200253 a 4500 001 2075024 005 2018-02-27 008 2017 bl uuuu u00u1 u #d 100 1 $aSOUZA, L. S. B. de 245 $aCarbon exchange in a Caatinga area during an unusually drought year.$h[electronic resource] 260 $c2017 520 $aThe objective of this study was to analyze the daily and seasonal variation of the carbon balance components in a caatinga area during an unusually drought year. Data were collected from a turbulent vortices covariance system installed at an area in Caatinga, in the region of Petrolina Municipality, State of Pernambuco, Brazil. Carbon dioxide flux data were collected in the year 2012, and the partitioning between gross primary productivity (GPP) and ecosystem respiration (Re). The vegetation cover index, weather elements and the soil water content were monitored. It was observed that the daily emissions of CO2 flux was dependent upon photosynthetically active radiation in the first days after rainfall events, being influenced by the water vapor pressure deficit with the reduction in the soil water content. The occurrence of up to 2 mm rainfall promoted peaks of Re after long periods of drought. The measured NEP was equal to 468.18 gC m-2 year-1. So, it is concluded that in years with severe drought, Caatinga may act as a source of carbon to the atmosphere. 650 $aCarbon dioxide 650 $aDióxido de carbono 650 $aFloresta 650 $aResistência a Seca 650 $aSeca 653 $aDry forest 653 $aSemiárido 653 $aTurbulent vortices covariance 700 1 $aMOURA, M. S. B. de 700 1 $aSEDIYAMA, G. C. 700 1 $aSILVA, T. G. F. da 773 $tAgrometeoros, Passo Fundo$gv. 25, n. 1, p. 37-45, ago. 2017.
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