Matches in SemOpenAlex for { <https://semopenalex.org/work/W2044348548> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W2044348548 endingPage "285" @default.
- W2044348548 startingPage "285" @default.
- W2044348548 abstract "O objetivo do trabalho foi comparar níveis de reflectância das folhas de Eucalyptus grandis Hill ex Maiden através de medidas espectrais a partir da localização das mesmas em relação à árvore e aos pontos cardeais. O experimento foi conduzido na área experimental pertencente à FEPAGRO, localizada no município de Santa Maria-RS. O trabalho compreendeu a instalação de delineamento blocos ao acaso. Com a utilização de um espectrorradiômetro FieldSpec®3, foram obtidas as medidas de radiância refletida da face superior das folhas e posteriormente trabalhados no software R. Na Banda 1 (400 a 700 nm), notou-se um pico que está relacionado ao total de clorofila na folha dentro da faixa do visível. Observou-se que folhas na posição leste foram as que apresentaram maior reflectância, e as folhas que estavam ao sul e ao oeste apresentaram as menores. Para a Banda 2 (700 a 1000 nm), observou-se diferença estatística significativa apenas entre os valores médios das reflectâncias no par de posições leste-oeste, contrastando com a Banda 1, que obteve diferença significativa entre as reflectâncias médias de todos os pares. A resposta espectral das folhas revelou-se estatisticamente diferente, confirmando, assim, que há diferença espectral relacionada à localização das árvores e posições de coletas das folhas.Palavras-chave: Espectrorradiometria; sensoriamento remoto; curva de reflectância. AbstractSpectral reflectance characterization in Eucalyptus grandis. The objective was to compare levels of reflectance of leaves of Eucalyptus grandis Hill ex Maiden using spectral measurements from their location in relation to the tree and the cardinal points. The experiment was carried out in the experimental area belonging to FEPAGRO, located in Santa Maria-RS. The work included the installation of a randomized block design. With the use of a spectroradiometer FieldSpec ® 3, it was measured the radiance reflected from the upper surface of leaves for further work with the software R. In the first band (400 to 700 nm), it was realized that a peak is related to total chlorophyll within the visible range. It was observed that the leaves heading east presented the highest reflectance and the leaves at south and west had the lowest one. For the second band (700 to 1000 nm), we observed a statistically significant difference only between the average values of reflectance in the pair of east-west positions, contrasting with the band that got a significant difference between the average reflectance of all pairs. The spectral response of leaves proved to be statistically different; it confirms that there are differences related to the spectral location of trees and locations of collected leaves.Keywords: Spectroradiometry; remote sensing; reflectance curve." @default.
- W2044348548 created "2016-06-24" @default.
- W2044348548 creator A5016270525 @default.
- W2044348548 creator A5017544215 @default.
- W2044348548 creator A5024709034 @default.
- W2044348548 creator A5029531527 @default.
- W2044348548 creator A5034833592 @default.
- W2044348548 creator A5064767594 @default.
- W2044348548 date "2012-05-14" @default.
- W2044348548 modified "2023-09-27" @default.
- W2044348548 title "CARACTERIZAÇÃO ESPECTRAL NA REFLECTÂNCIA DE Eucalyptus grandis" @default.
- W2044348548 cites W1600016881 @default.
- W2044348548 cites W1996379195 @default.
- W2044348548 cites W2000694419 @default.
- W2044348548 cites W2008283621 @default.
- W2044348548 cites W2021070812 @default.
- W2044348548 cites W2022114612 @default.
- W2044348548 cites W2027694964 @default.
- W2044348548 cites W2105756833 @default.
- W2044348548 cites W2139925058 @default.
- W2044348548 cites W2515628900 @default.
- W2044348548 cites W408305008 @default.
- W2044348548 doi "https://doi.org/10.5380/rf.v42i2.17587" @default.
- W2044348548 hasPublicationYear "2012" @default.
- W2044348548 type Work @default.
- W2044348548 sameAs 2044348548 @default.
- W2044348548 citedByCount "1" @default.
- W2044348548 countsByYear W20443485482016 @default.
- W2044348548 crossrefType "journal-article" @default.
- W2044348548 hasAuthorship W2044348548A5016270525 @default.
- W2044348548 hasAuthorship W2044348548A5017544215 @default.
- W2044348548 hasAuthorship W2044348548A5024709034 @default.
- W2044348548 hasAuthorship W2044348548A5029531527 @default.
- W2044348548 hasAuthorship W2044348548A5034833592 @default.
- W2044348548 hasAuthorship W2044348548A5064767594 @default.
- W2044348548 hasBestOaLocation W20443485481 @default.
- W2044348548 hasConcept C108597893 @default.
- W2044348548 hasConcept C120665830 @default.
- W2044348548 hasConcept C121332964 @default.
- W2044348548 hasConcept C144027150 @default.
- W2044348548 hasConcept C2779752776 @default.
- W2044348548 hasConcept C59822182 @default.
- W2044348548 hasConcept C86803240 @default.
- W2044348548 hasConceptScore W2044348548C108597893 @default.
- W2044348548 hasConceptScore W2044348548C120665830 @default.
- W2044348548 hasConceptScore W2044348548C121332964 @default.
- W2044348548 hasConceptScore W2044348548C144027150 @default.
- W2044348548 hasConceptScore W2044348548C2779752776 @default.
- W2044348548 hasConceptScore W2044348548C59822182 @default.
- W2044348548 hasConceptScore W2044348548C86803240 @default.
- W2044348548 hasIssue "2" @default.
- W2044348548 hasLocation W20443485481 @default.
- W2044348548 hasOpenAccess W2044348548 @default.
- W2044348548 hasPrimaryLocation W20443485481 @default.
- W2044348548 hasRelatedWork W1568495990 @default.
- W2044348548 hasRelatedWork W1598909928 @default.
- W2044348548 hasRelatedWork W1966304643 @default.
- W2044348548 hasRelatedWork W1967882950 @default.
- W2044348548 hasRelatedWork W2066724429 @default.
- W2044348548 hasRelatedWork W2165245819 @default.
- W2044348548 hasRelatedWork W2172207871 @default.
- W2044348548 hasRelatedWork W2971871030 @default.
- W2044348548 hasRelatedWork W3133502415 @default.
- W2044348548 hasRelatedWork W3157107924 @default.
- W2044348548 hasVolume "42" @default.
- W2044348548 isParatext "false" @default.
- W2044348548 isRetracted "false" @default.
- W2044348548 magId "2044348548" @default.
- W2044348548 workType "article" @default.