| 1. Identificação | |
| Tipo de Referência | ePrint (Electronic Source) |
| Site | mtc-m16b.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repositório | sid.inpe.br/mtc-m17@80/2007/12.07.18.06 |
| Última Atualização | 2007:12.07.18.06.54 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/mtc-m17@80/2007/12.07.18.06.52 |
| Última Atualização dos Metadados | 2018:06.05.04.02.21 (UTC) administrator |
| Chave de Citação | NumataRoChScGaSo::EvHyDa |
| Título | Evaluation of hyperspectral data for pasture estimate in the Brazilian Amazon using imaging spectrometers  |
| Data da Última Atualização | 2007-12-08 |
| Data de Acesso | 05 jun. 2024 |
| Tipo de Suporte | On-line |
| Número de Arquivos | 1 |
| Tamanho | 2211 KiB |
| 2. Contextualização | |
| Autor | 1 Numata, Izaya 2 Roberts, Dar 3 Chadwick, Oliver A. 4 Schimel, Josh 5 Galvão, Leonio 6 Soares, J. V. |
| Grupo | 1 2 3 4 5 6 DSR-INPE-MCT-BR |
| Afiliação | 1 2 3 4 5 6 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Produtor | Instituto Nacional de Pesquisas Espaciais |
| Cidade | São José dos Campos |
| Estágio da Publicação Alternativa | accepted |
| Avanço | ePrint update |
| Histórico (UTC) | 2007-12-07 18:06:54 :: marcia@dsr.inpe.br -> administrator :: 2018-06-05 04:02:21 :: administrator -> marcia@dsr.inpe.br :: |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | em andamento |
| Transferível | 1 |
| Palavras-Chave | Pasture biophysical characterization Spectral absorption features Hyperion Spectral mixture analysis Amazon |
| Resumo | We used two hyperspectral sensors at two different scales to test their potential to estimate biophysical properties of grazed pastures in Rondônia in the Brazilian Amazon. Using a field spectrometer, ten remotely sensed measurements (i.e., two vegetation indices, four fractions of spectral mixture analysis, and four spectral absorption features) were generated for two grass species, Brachiaria brizantha and Brachiaria decumbens. These measures were compared to above ground biomass, live and senesced biomass, and grass canopy water content. The sample size was 69 samples for field grass biophysical data and grass canopy reflectance. Water absorption measures between 1100 and 1250 nm had the highest correlations with above ground biomass, live biomass and canopy water content, while ligno-cellulose absorption measures between 2045 and 2218 nm were the best for estimating senesced biomass. These results suggest possible improvements on estimating grass measures using spectral absorption features derived from hyperspectral sensors. However, relationships were highly influenced by grass species architecture. B. decumbens, a more homogeneous, low growing species, had higher correlations between remotely sensed measures and biomass than B. brizantha, a more heterogeneous, vertically oriented species. The potential of using the Earth Observing-1 Hyperion data for pasture characterization was assessed and validated using field spectrometer and CCD camera data. Hyperion-derived NPV fraction provided better estimates of grass surface fraction compared to fractions generated from convolved ETM+/Landsat 7 data and minimized the problem of spectral ambiguity between NPV and Soil. The results suggest possible improvement of the quality of land-cover maps compared to maps made using multispectral sensors for the Amazon region. © 2007 Elsevier Inc. All rights reserved. |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Evaluation of hyperspectral... |
| 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/mtc-m17@80/2007/12.07.18.06 |
| URL dos dados zipados | http://urlib.net/zip/sid.inpe.br/mtc-m17@80/2007/12.07.18.06 |
| Idioma | en |
| Arquivo Alvo | v1.pdf |
| Grupo de Usuários | administrator marcia@dsr.inpe.br administrator |
| Visibilidade | shown |
| Permissão de Atualização | transferida para ePrint update |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Acervo Hospedeiro | lcp.inpe.br/ignes/2004/02.12.18.39 cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notas | |
| Campos Vazios | accessyear alternatepublication archivingpolicy archivist contenttype copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition electronicmailaddress format identifier isbn issn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark secondarytype session shorttitle sponsor subject tertiarymark tertiarytype url versiontype year |
| 7. Controle da descrição | |
| e-Mail (login) | marcia@dsr.inpe.br |
| atualizar | |