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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
30/10/2014 |
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Data da última atualização: |
23/05/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
COSTA, T. C. e C. da; VIANA, J. H. M.; RIBEIRO, J. L. |
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Afiliação: |
THOMAZ CORREA E CASTRO DA COSTA, CNPMS; JOAO HERBERT MOREIRA VIANA, CNPMS. |
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Título: |
Semideciduous seasonal forest production of leaves and deciduousness in function of the water balance, LAI and NDVI. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
International Journal of Ecology, v. 2014, p. 1-15, 2014. |
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DOI: |
http://dx.doi.org/10.1155/2014/923027 |
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Idioma: |
Inglês |
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Conteúdo: |
This study investigated the relationship between leaf production, litterfall, water balance, Leaf Area Index (LAI), and Normalized Difference Vegetation Index (NDVI) in semideciduous forests. The goal was to model this phenomenon to obtain the estimates of this component as an additional compartment of the ecosystem carbon sink. The tests were conducted in eight semideciduous forest fragments. Twenty-four permanent plots were monitored monthly and LAI measurements and weighing of litterfall deposited in nets were conducted for a period of thirteen months. In this period, Landsat 5 and IRS satellite images were obtained and processed for generation of NDVI. The water balance was calculated for each day. The relationship among the variables “leaf dry weight,” “LAI,” “NDVI,” and “water balance” was verified and a regression model was built and evaluated. The deciduous phenomenon can be explained by hydric balance, and LAI and NDVI are ancillary variables. The tendency of the variables in the period of 13 months was explained by quadratic functions. The varied behavior among the monitoring sites helped to know differences in the deposition of leaves. This study showed that only the leaf component of the litterfall of a semideciduous forest in tropical climate can capture 4to8Mg?ha?1? yr?1of CO2 and this amount can be estimated using climate, biophysics, and vegetation index variables. |
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Thesagro: |
Balanço hídrico; Floresta. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02027naa a2200181 a 4500
001 1998849
005 2017-05-23
008 2014 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1155/2014/923027$2DOI
100 1 $aCOSTA, T. C. e C. da
245 $aSemideciduous seasonal forest production of leaves and deciduousness in function of the water balance, LAI and NDVI.$h[electronic resource]
260 $c2014
520 $aThis study investigated the relationship between leaf production, litterfall, water balance, Leaf Area Index (LAI), and Normalized Difference Vegetation Index (NDVI) in semideciduous forests. The goal was to model this phenomenon to obtain the estimates of this component as an additional compartment of the ecosystem carbon sink. The tests were conducted in eight semideciduous forest fragments. Twenty-four permanent plots were monitored monthly and LAI measurements and weighing of litterfall deposited in nets were conducted for a period of thirteen months. In this period, Landsat 5 and IRS satellite images were obtained and processed for generation of NDVI. The water balance was calculated for each day. The relationship among the variables “leaf dry weight,” “LAI,” “NDVI,” and “water balance” was verified and a regression model was built and evaluated. The deciduous phenomenon can be explained by hydric balance, and LAI and NDVI are ancillary variables. The tendency of the variables in the period of 13 months was explained by quadratic functions. The varied behavior among the monitoring sites helped to know differences in the deposition of leaves. This study showed that only the leaf component of the litterfall of a semideciduous forest in tropical climate can capture 4to8Mg?ha?1? yr?1of CO2 and this amount can be estimated using climate, biophysics, and vegetation index variables.
650 $aBalanço hídrico
650 $aFloresta
700 1 $aVIANA, J. H. M.
700 1 $aRIBEIRO, J. L.
773 $tInternational Journal of Ecology$gv. 2014, p. 1-15, 2014.
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Embrapa Milho e Sorgo (CNPMS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agropecuária Oeste. Para informações adicionais entre em contato com cpao.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agropecuária Oeste. |
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Data corrente: |
29/01/2008 |
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Data da última atualização: |
25/11/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
MERCANTE, F. M.; SILVA, R. F. da; OTSUBO, A. A.; MELHORANÇA, A. L. |
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Afiliação: |
Fábio Martins Mercante, Embrapa Agropecuária Oeste; Rogério Ferreira da Silva Bolsista Júnior pós-doutorado CNPq/Embrapa; Auro Akio Otsubo, Embrapa Agropecuária Oeste; André Luiz Melhorança, Embrapa Agropecuária Oeste. |
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Título: |
Avaliação de plantas daninhas após cultivos de mandioca sob diferentes coberturas vegetais. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Ensaios e Ciência, v. 11, n. 1, p. 33-40, abr. 2007. |
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Idioma: |
Português |
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Thesagro: |
Mandioca. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00478naa a2200157 a 4500
001 1253916
005 2011-11-25
008 2007 bl --- 0-- u #d
100 1 $aMERCANTE, F. M.
245 $aAvaliação de plantas daninhas após cultivos de mandioca sob diferentes coberturas vegetais.
260 $c2007
650 $aMandioca
700 1 $aSILVA, R. F. da
700 1 $aOTSUBO, A. A.
700 1 $aMELHORANÇA, A. L.
773 $tEnsaios e Ciência$gv. 11, n. 1, p. 33-40, abr. 2007.
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