| 1. Identificação | |
| Tipo de Referência | Artigo em Revista Científica (Journal Article) |
| Site | mtc-m12.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repositório | sid.inpe.br/iris@1912/2005/07.20.06.27.44 (acesso restrito) |
| Última Atualização | 2007:10.10.19.09.02 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/iris@1912/2005/07.20.06.28 |
| Última Atualização dos Metadados | 2018:06.05.00.52.41 (UTC) administrator |
| Chave Secundária | INPE-5926-PRE/2069 |
| ISSN | 0034-4257 |
| Rótulo | 7315 |
| Chave de Citação | EpiphanioHuet:1995:DeNDSA |
| Título | Dependence of NDVI and SAVI on Sun/Sensor Geometry and its effect on fAPAR relationships in alfalfa  |
| Ano | 1995 |
| Data Secundária | 19960428 |
| Mês | Mar. |
| Data de Acesso | 10 maio 2024 |
| Tipo Secundário | PRE PI |
| Número de Arquivos | 1 |
| Tamanho | 96 KiB |
| 2. Contextualização | |
| Autor | 1 Epiphanio, Jose Carlos Neves 2 Huete, A. R |
| Identificador de Curriculo | 1 8JMKD3MGP5W/3C9JHGM |
| Grupo | 1 DSR-INPE-MCT-BR |
| Afiliação | 1 2 UNIV ARIZONA, DEPT SOIL & WATER SCI, TUCSON, AZ |
| Revista | Remote Sensing of Environment |
| Volume | 51 |
| Número | 3 |
| Páginas | 351-360 |
| Histórico (UTC) | 2006-09-04 15:59:43 :: administrator -> jefferson :: 2007-10-10 19:14:53 :: jefferson -> administrator :: 2008-06-09 19:16:24 :: administrator -> jefferson :: 2010-07-07 18:52:00 :: jefferson -> marciana :: 2011-10-31 11:09:43 :: marciana -> administrator :: 1995 2018-06-05 00:52:41 :: administrator -> marciana :: 1995 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Tipo de Versão | publisher |
| Palavras-Chave | AGRONOMIA photosynthetically active radiation leaf-area index spectral vegetation indexes corn canopies reflectance model yield par |
| Resumo | This article describes the impacts of sensor view and solar zenith angles on two vegetation indices - NDVI (normalized difference vegetation index)and SAVI (soil adjusted vegetation index). An evaluation of these geometric factors on the relationships between these VIs (vegetation indices)and fAPAR (fraction of photosynthetically active radiation absorbed by the canopy)was performed. To accomplish this, an experiment was conducted in Phoenix, Arizona, over plots of bare soil and low, medium, and high alfafa. Reflectances were measured from 0.4 um to 1.0 um in nine view angles (from -40 graus to +40 graus, in 10 graus steps)over varying solar zenith angles. This was done simultaneously with fAPAR measurements. Changes in view angle caused variations in the indices to be as high as 50 in relation to nadir. However, there was an opposite view angle behavior between NDVI and SAVI, with the former increasing from antisolar to forward scattering view direction. A derivative analysis of the indices showed the SAVI to exhibit a more linear relationship than NDVI with the individual bands. The relationships between both VIs and fAPAR were, in general, linear. However, view angle variations perturbed these relationships and caused an over- or underestimation of fAPAR, depending on view direction (antisolar or forward), view angle, and vegetation index (NDVI or SAVI). |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Dependence of NDVI... |
| 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 | |
| Idioma | en |
| Arquivo Alvo | ScienceDirect - Remote Sensing of Environment Dependence of NDVI and SAVI on sun-sensor geometry and its effect on fAPAR relationships in Alfalfa.htm |
| Grupo de Usuários | administrator jefferson marciana |
| Visibilidade | shown |
| Detentor da Cópia | SID/SCD |
| Política de Arquivamento | denypublisher allowfinaldraft24 |
| Permissão de Leitura | deny from all and allow from 150.163 |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Divulgação | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notas | |
| Campos Vazios | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel doi e-mailaddress electronicmailaddress format identifier isbn lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |