| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | marte.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repositório | sid.inpe.br/iris@1912/2005/07.20.00.37.33 |
| Última Atualização | 2008:04.24.19.37.58 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/iris@1912/2005/07.20.00.37.52 |
| Última Atualização dos Metadados | 2018:06.06.02.48.54 (UTC) administrator |
| Chave Secundária | INPE-6564-PRE/2601 |
| ISBN | 978-85-17-00054-6 |
| Rótulo | 6593 |
| Chave de Citação | MorelliFormEpip:1993:InGeVi |
| Título | Influência da geometria de visada na reflectância espectral de duas gramíneas forrageiras  |
| Formato | Printed, On-line. |
| Ano | 1993 |
| Data Secundária | 19930714 |
| Data de Acesso | 12 maio 2024 |
| Tipo Secundário | PRE CN |
| Número de Arquivos | 1 |
| Tamanho | 1740 KiB |
| 2. Contextualização | |
| Autor | 1 Morelli, Ademir Fernando 2 Formaggio, Antonio Roberto 3 Epiphanio, José Carlos Neves |
| Identificador de Curriculo | 1 2 8JMKD3MGP5W/3C9JGJQ 3 8JMKD3MGP5W/3C9JHGM |
| Grupo | 1 DSR-INPE-MCT-BR 2 DSR-INPE-MCT-BR 3 DSR-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Editor | Cunha, Roberto Pereira da Dias, Luiz Alberto Vieira |
| Endereço de e-Mail | erich@sid.inpe.br |
| Nome do Evento | Simpósio Brasileiro de Sensoriamento Remoto, 7 (SBSR). |
| Localização do Evento | Curitiba, BR |
| Data | 10-14 maio 1993 |
| Editora (Publisher) | Instituto Nacional de Pesquisas Espaciais (INPE) |
| Cidade da Editora | São José dos Campos |
| Volume | 3 |
| Páginas | 80-95 |
| Título do Livro | Anais |
| Organização | Instituto Nacional de Pesquisas Espaciais |
| Histórico (UTC) | 2005-07-20 00:37:53 :: administrator -> jefferson :: 2008-04-24 19:37:58 :: jefferson -> administrator :: 2008-06-25 19:24:09 :: administrator -> jefferson :: 2008-06-30 13:33:41 :: jefferson -> administrator :: 2008-07-02 12:35:52 :: administrator -> erich@sid.inpe.br :: 2008-07-24 19:16:04 :: erich@sid.inpe.br -> administrator :: 2009-06-02 19:09:11 :: administrator -> erich@sid.inpe.br :: 2010-05-14 02:54:15 :: erich@sid.inpe.br -> administrator :: 2010-06-20 15:29:35 :: administrator -> marciana :: 1993 2011-02-16 12:51:12 :: marciana -> administrator :: 1993 2018-06-06 02:48:54 :: administrator -> :: 1993 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 0 |
| Palavras-Chave | AGRONOMIA REFLECTANCIA ESPECTRAL REFLECTANCIA BIDIRECIONAL GEOMETRIA RADIOMETRIA RADIOMETRY SPECTRAL REFLECTANCE BIDIRECTIONAL REFLECTANCE GEOMETRY |
| Resumo | The objective of this research was to evaluate the influence's variation of view geometry variation in spectral behavior of herbaceous vegetation and soil underlying in composition pastures for Brachiaria decumbens Stapf. cv. Basilisk Stapf and Brachiaria brizantha Stapf cv. Marandu. The methodology development involved the report analysis between the spectral reflectance and the biophysics parameters of herbaceous vegetation and soil. For this purpose radiometric and biophysics measurements were done for 25 vegetation samples and one soil sample, in experiment areas of 1000 m2, for each species. The multispectral bidirectional reflectance measurements (500 to 1100 nm) were obtained in the view zenith angles (áv) of 0¢X,15¢X,30¢X,45¢X and 60¢X for three sectors of azimutal plain (Öv = 0¢X,90¢X and 180¢X), with the solar zenith angle variation controlled for an amplitude of the 10¢X (ás = 45¢X to 55¢X) and the solar azimutal variation compensated in the acquisition method. The following vegetation parameters were measured: fresh and dry biomass, fresh and dry green biomass, droughty biomass and leaf and stems; water content of total, green and droughty biomass, Leaf Area Index (LAI) and percentage of canopy cover. The soil parameters available were color, roughness and chemistry composition. This research intent is the comprehension of physical mechanisms involved in the directional reflectance factor distribution of complete homogeneous vegetation canopies and its influences in the relation between spectral behavior and vegetation parameters. The general scattering behavior was coherent with the dynamics observed in the literature and was supported by two principal phenomena: the "phase function" and "geometric effect 1". The major trends observed in the reflectance factor occurred in the azimuth in the principal plane of the sun (Ös = 0¢X and 180¢X), while the minor trends occurred in the azimuth direction perpendicular to the principal plane of the sun (Öv = 90¢X). For all view angles and spectral bands the minimum reflectance occurred near nadir (áv = 0¢X) and increased with increasing view zenith angles for all azimuth directions. This trend is caused by the shading of lower canopy layers, by components in the upper layers and by viewing different proportions of the layer components as the view angle changes ("effect 1"). In some cases by an addictive effect of "phase function", the reflectance minimum was shifted slightly off-nadir in the forward scattering direction (Ös = 0¢X). This shift was maximized for occurrence of reproductive structures in the top layers of cover, because this structure is vertical and opaque. The near infra-red band was less influenced by view geometry variation than in the spectral bands of visible, because in the near infra-red band the transmittance was nearly equal to the reflectance for most structural components of herbaceous vegeta-tion, while in the visible the reflectance is major, consequently the "effect 1" is maximized. The major information content about vegetation cover was obtained in the principal plane of the sun, in the backscattering direction (Öp = 180¢X), than showed better relationships to the vegetation parameters, because of the occurrence of "hot spot". The vegetation parameters of production and water content showed the best correlations, because its parameters have more association to the near infra-red, that exhibited the better perforf11ance than visible bands, more associated to LAI and fresh and dry biomass components. The "effect 1" was the dominant phenomenon with controlled the directional reflectance distributions observed, but had its effects alterated by the action of additional phenomenon "phase function". |
| Área | SRE |
| Tipo | Comportamento e Assinaturas de Alvos Naturais |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Influência da geometria... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| URL dos dados | http://urlib.net/ibi/sid.inpe.br/iris@1912/2005/07.20.00.37.33 |
| URL dos dados zipados | http://urlib.net/zip/sid.inpe.br/iris@1912/2005/07.20.00.37.33 |
| Idioma | pt |
| Arquivo Alvo | 080-095.pdf |
| Grupo de Usuários | administrator erich@sid.inpe.br jefferson |
| Visibilidade | shown |
| Detentor da Cópia | SID/SCD |
| Permissão de Leitura | allow from all |
| 5. Fontes relacionadas | |
| Repositório Espelho | dpi.inpe.br/marte@80/2007/10.17.19.59 |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Lista de Itens Citando | sid.inpe.br/mtc-m21/2012/07.13.14.40.34 2 |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 dpi.inpe.br/banon/2003/12.10.19.30 |
| 6. Notas | |
| Campos Vazios | archivingpolicy archivist callnumber contenttype copyright creatorhistory descriptionlevel dissemination documentstage doi edition electronicmailaddress identifier issn lineage mark nextedition notes numberofvolumes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype url versiontype |