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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
15/03/2017 |
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Data da última atualização: |
20/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HILKER, T.; GALVÃO, L. S.; ARAGÃO, L. E. O. C.; MOURA, Y. M. de; AMARAL, C. H. do; LYAPUSTIN, A. I.; WU, J.; ALBERT, L. P.; FERREIRA, M. J.; ANDERSON, L. O.; SANTOS, V. A. H. F. dos; PROHASKA, N.; TRIBUZY, E.; CERON, J. V. B.; SALESKA, S. R.; WANG, Y.; GONÇALVES, J. F. de C.; OLIVEIRA JUNIOR, R. C. de; RODRIGUES, J. V. F. C.; GARCIA, M. N. |
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Afiliação: |
Thomas Hilker, University of Southampton / Oregon State University; Lênio Soares Galvão, INPE; Luiz E. O. C. Aragão, INPE; Yhasmin M. de Moura, INPE; Cibele H. do Amaral, UFV; Alexei I. Lyapustin, NASA Goddard Space Flight Center; JIN WU, Environmental and Climate Sciences Department, Brookhaven National Lab / University of Arizona; Loren P. Albert, University of Arizona; Marciel José Ferreira, UFAM; Liana O. Anderson, Centro Nacional de Monitoramento e Alertas de Desastres Naturais (CEMADEN); Victor A. H. F. dos Santos, INPA; Neill Prohaska, University of Arizona; Edgard Tribuzy, INPA; João Vitor Barbosa Ceron, INPA; Scott R. Saleska, University of Arizona; Yujie Wang, University of Maryland Baltimore County; José Francisco de Carvalho Gonçalves, INPA; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; João Victor Figueiredo Cardoso Rodrigues, UFAM; Maquelle Neves Garcia, INPA. |
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Título: |
Vegetation chlorophyll estimates in the Amazon from multi-angle MODIS observations and canopy reflectance model. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
International Journal of Applied Earth Observation and Geoinformation, v. 58, p. 278-287, June 2017. |
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DOI: |
http://dx.doi.org/10.1016/j.jag.2017.01.014 |
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Idioma: |
Inglês |
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Conteúdo: |
As a preparatory study for future hyperspectral missions that can measure canopy chemistry, we introduce a novel approach to investigate whether multi-angle Moderate Resolution Imaging Spectroradiometer (MODIS) data can be used to generate a preliminary database with long-term estimates of chlorophyll. MODIS monthly chlorophyll estimates between 2000 and 2015, derived from a fully coupled canopy reflectance model (ProSAIL), were inspected for consistency with eddy covariance fluxes, tower-based hyperspectral images and chlorophyll measurements. MODIS chlorophyll estimates from the inverse model showed strong seasonal variations across two flux-tower sites in central and eastern Amazon. Marked increases in chlorophyll concentrations were observed during the early dry season. Remotely sensed chlorophyll concentrations were correlated to field measurements (r2 = 0.73 and r2 = 0.98) but the data deviated from the 1:1 line with root mean square errors (RMSE) ranging from (Tapajós tower) to 0.470 (Manaus tower). The chlorophyll estimates were consistent with flux tower measurements of photosynthetically active radiation (PAR) and net ecosystem productivity (NEP). We also applied ProSAIL to mono-angle hyperspectral observations from a camera installed on a tower to scale modeled chlorophyll pigments to MODIS observations (r2 = 0.73). Chlorophyll pigment concentrations (ChlA+B) were correlated to changes in the amount of young and mature leaf area per month (0.59 ; r2 ; 0.64). Increases in MODIS observed ChlA+B were preceded by increased PAR during the dry season (0.61; 0.62) and followed by changes in net carbon uptake. We conclude that, at these two sites, changes in LAI, coupled with changes in leaf chlorophyll, are comparable with seasonality of plant productivity. Our results allowed the preliminary development of a 15-year time series of chlorophyll estimates over the Amazon to support canopy chemistry studies using future hyperspectral sensors. MenosAs a preparatory study for future hyperspectral missions that can measure canopy chemistry, we introduce a novel approach to investigate whether multi-angle Moderate Resolution Imaging Spectroradiometer (MODIS) data can be used to generate a preliminary database with long-term estimates of chlorophyll. MODIS monthly chlorophyll estimates between 2000 and 2015, derived from a fully coupled canopy reflectance model (ProSAIL), were inspected for consistency with eddy covariance fluxes, tower-based hyperspectral images and chlorophyll measurements. MODIS chlorophyll estimates from the inverse model showed strong seasonal variations across two flux-tower sites in central and eastern Amazon. Marked increases in chlorophyll concentrations were observed during the early dry season. Remotely sensed chlorophyll concentrations were correlated to field measurements (r2 = 0.73 and r2 = 0.98) but the data deviated from the 1:1 line with root mean square errors (RMSE) ranging from (Tapajós tower) to 0.470 (Manaus tower). The chlorophyll estimates were consistent with flux tower measurements of photosynthetically active radiation (PAR) and net ecosystem productivity (NEP). We also applied ProSAIL to mono-angle hyperspectral observations from a camera installed on a tower to scale modeled chlorophyll pigments to MODIS observations (r2 = 0.73). Chlorophyll pigment concentrations (ChlA+B) were correlated to changes in the amount of young and mature leaf area per month (0.59 ; r2 ; 0.64). Incre... Mostrar Tudo |
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Thesagro: |
Clorofila; Fenologia. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 03195naa a2200397 a 4500
001 2067032
005 2022-05-20
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.jag.2017.01.014$2DOI
100 1 $aHILKER, T.
245 $aVegetation chlorophyll estimates in the Amazon from multi-angle MODIS observations and canopy reflectance model.$h[electronic resource]
260 $c2017
520 $aAs a preparatory study for future hyperspectral missions that can measure canopy chemistry, we introduce a novel approach to investigate whether multi-angle Moderate Resolution Imaging Spectroradiometer (MODIS) data can be used to generate a preliminary database with long-term estimates of chlorophyll. MODIS monthly chlorophyll estimates between 2000 and 2015, derived from a fully coupled canopy reflectance model (ProSAIL), were inspected for consistency with eddy covariance fluxes, tower-based hyperspectral images and chlorophyll measurements. MODIS chlorophyll estimates from the inverse model showed strong seasonal variations across two flux-tower sites in central and eastern Amazon. Marked increases in chlorophyll concentrations were observed during the early dry season. Remotely sensed chlorophyll concentrations were correlated to field measurements (r2 = 0.73 and r2 = 0.98) but the data deviated from the 1:1 line with root mean square errors (RMSE) ranging from (Tapajós tower) to 0.470 (Manaus tower). The chlorophyll estimates were consistent with flux tower measurements of photosynthetically active radiation (PAR) and net ecosystem productivity (NEP). We also applied ProSAIL to mono-angle hyperspectral observations from a camera installed on a tower to scale modeled chlorophyll pigments to MODIS observations (r2 = 0.73). Chlorophyll pigment concentrations (ChlA+B) were correlated to changes in the amount of young and mature leaf area per month (0.59 ; r2 ; 0.64). Increases in MODIS observed ChlA+B were preceded by increased PAR during the dry season (0.61; 0.62) and followed by changes in net carbon uptake. We conclude that, at these two sites, changes in LAI, coupled with changes in leaf chlorophyll, are comparable with seasonality of plant productivity. Our results allowed the preliminary development of a 15-year time series of chlorophyll estimates over the Amazon to support canopy chemistry studies using future hyperspectral sensors.
650 $aAmazonia
650 $aClorofila
650 $aFenologia
700 1 $aGALVÃO, L. S.
700 1 $aARAGÃO, L. E. O. C.
700 1 $aMOURA, Y. M. de
700 1 $aAMARAL, C. H. do
700 1 $aLYAPUSTIN, A. I.
700 1 $aWU, J.
700 1 $aALBERT, L. P.
700 1 $aFERREIRA, M. J.
700 1 $aANDERSON, L. O.
700 1 $aSANTOS, V. A. H. F. dos
700 1 $aPROHASKA, N.
700 1 $aTRIBUZY, E.
700 1 $aCERON, J. V. B.
700 1 $aSALESKA, S. R.
700 1 $aWANG, Y.
700 1 $aGONÇALVES, J. F. de C.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aRODRIGUES, J. V. F. C.
700 1 $aGARCIA, M. N.
773 $tInternational Journal of Applied Earth Observation and Geoinformation$gv. 58, p. 278-287, June 2017.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Uva e Vinho. Para informações adicionais entre em contato com cnpuv.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
12/01/2017 |
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Data da última atualização: |
15/10/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
MELO, G. W. B. de; SILVA, L. S. da; BRUNETTO, G.; ZALAMENA, J.; ALBARELLO, J. B. |
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Afiliação: |
GEORGE WELLINGTON BASTOS DE MELO, CNPUV; Universidade Federal de Santa Maria – UFSM, Centro de Cie?ncias Rurais, Programa de Po?s-Grad. em Cie?ncia do Solo, Santa Maria, Rio Grande do Sul State, Brazil.; GUSTAVO BRUNETTO, 2Universidade Federal de Santa Maria – UFSM, Centro de Cie?ncias Rurais, Programa de Po?s-Grad. em Cie?ncia do Solo, Santa Maria, Rio Grande do Sul State, Brazil.; JOVANI ZALAMENA, 1Empresa Brasileira de Pesquisa Agropecua?ria, Embrapa Uva e Vinho, Bento Gonçalves, Rio Grande do Sul State, Brazil; J.B. Albarello, Empresa Brasileira de Pesquisa Agropecua?ria, Embrapa Uva e Vinho, Bento Gonçalves, Rio Grande do Sul State, Brazil. |
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Título: |
Sensitivity of grapevine rootstocks to changes in zinc concentration in the soil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Acta Horticulturae, v. 1136, p. 201-208, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract The objective of this study was to evaluate the effect of high levels of Zn in soil on productivity and nutritional and root performance of young grapevine rootstocks, as well as to identify variables that are affected by excess Zn. Five rootstocks (SO4, Paulsen 1103, IAC572, IAC313 and 420A) were grown in pots containing soil with the addition of 0, 20, 40, 80 or 160 mg kg-1 of Zn. The rootstocks were pruned at 45 days, discarding the shoot. After re-sprouting, a main branch was maintained and evaluated after 50 days in terms of height, number of leaves, and leaf area; dry matter, concentration and accumulation of Zn in the shoots and roots; and area, olume, length and diameter of the root system. The variables of plant height, leaf area, and dry weight of roots and shoots can be used to evaluate the effect of Zn on the growth of young grapevines. The application of Zn to the soil increased the concentration and total accumulation of Zn in the shoots and roots of the grapevine rootstocks. The volume, surface area, and length of vine roots decreased after applying Zn to the soil, and these variables can be used to evaluate the negative effects of Zn on the vines. The number of leaves and the weighted root diameter are not good indicators of changes in young grapevines caused by high levels of Zn in the soil. |
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Palavras-Chave: |
Heavy metal; Soil contamination; Zinc phytotoxicity. |
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Thesaurus NAL: |
Root growth; Vineyards. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01969nam a2200217 a 4500
001 2060645
005 2018-10-15
008 2016 bl uuuu u00u1 u #d
100 1 $aMELO, G. W. B. de
245 $aSensitivity of grapevine rootstocks to changes in zinc concentration in the soil.$h[electronic resource]
260 $aActa Horticulturae, v. 1136, p. 201-208$c2016
520 $aAbstract The objective of this study was to evaluate the effect of high levels of Zn in soil on productivity and nutritional and root performance of young grapevine rootstocks, as well as to identify variables that are affected by excess Zn. Five rootstocks (SO4, Paulsen 1103, IAC572, IAC313 and 420A) were grown in pots containing soil with the addition of 0, 20, 40, 80 or 160 mg kg-1 of Zn. The rootstocks were pruned at 45 days, discarding the shoot. After re-sprouting, a main branch was maintained and evaluated after 50 days in terms of height, number of leaves, and leaf area; dry matter, concentration and accumulation of Zn in the shoots and roots; and area, olume, length and diameter of the root system. The variables of plant height, leaf area, and dry weight of roots and shoots can be used to evaluate the effect of Zn on the growth of young grapevines. The application of Zn to the soil increased the concentration and total accumulation of Zn in the shoots and roots of the grapevine rootstocks. The volume, surface area, and length of vine roots decreased after applying Zn to the soil, and these variables can be used to evaluate the negative effects of Zn on the vines. The number of leaves and the weighted root diameter are not good indicators of changes in young grapevines caused by high levels of Zn in the soil.
650 $aRoot growth
650 $aVineyards
653 $aHeavy metal
653 $aSoil contamination
653 $aZinc phytotoxicity
700 1 $aSILVA, L. S. da
700 1 $aBRUNETTO, G.
700 1 $aZALAMENA, J.
700 1 $aALBARELLO, J. B.
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Embrapa Uva e Vinho (CNPUV) |
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