Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/14726 |
Resumo: | Empirical approaches 14726, more recently, physical approaches, have grounded the establishment of logical connections between radiometric variables derived from remote data and biophysical variables derived from vegetation cover. This study was aimed at evaluating correlations of dendrometric and density data from canopies of Eucalyptus spp., as collected in Capão Bonito forest unit, with radiometric data from imagery acquired by the TM/Landsat-5 sensor on two orbital passages over the study site (dates close to fi eld data collection). Results indicate that stronger correlations were identifi ed between crown dimensions and canopy height with near-infrared spectral band data (ρs4), irrespective of the satellite passage date. Estimates of spatial distribution of dendrometric data and canopy density (D) using spectral characterization were consistent with the spatial distribution of tree ages during the study period. Statistical tests were applied to evaluate performance disparities of empirical models depending on which date data were acquired. Results indicated a signifi cant difference between models based on distinct data acquisition dates. |
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Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5Caracterização estrutural de dosséis de Eucalyptus spp. mediante dados radiométricos TM/Landsat 5Spectral characterizationEstimate of biophysical dataCanopy reflectanceCaracterização espectralEstimativa de dados biofísicosReflectância de dosséisEmpirical approaches 14726, more recently, physical approaches, have grounded the establishment of logical connections between radiometric variables derived from remote data and biophysical variables derived from vegetation cover. This study was aimed at evaluating correlations of dendrometric and density data from canopies of Eucalyptus spp., as collected in Capão Bonito forest unit, with radiometric data from imagery acquired by the TM/Landsat-5 sensor on two orbital passages over the study site (dates close to fi eld data collection). Results indicate that stronger correlations were identifi ed between crown dimensions and canopy height with near-infrared spectral band data (ρs4), irrespective of the satellite passage date. Estimates of spatial distribution of dendrometric data and canopy density (D) using spectral characterization were consistent with the spatial distribution of tree ages during the study period. Statistical tests were applied to evaluate performance disparities of empirical models depending on which date data were acquired. Results indicated a signifi cant difference between models based on distinct data acquisition dates.Abordagens empíricas e, mais recentemente, abordagens físicas têm fundamentado o estabelecimento de conexões lógicas entre variáveis radiométricas provenientes de dados remotamente coletados e outras de caráter biofísico provenientes da cobertura vegetal. Nesse sentido, foram avaliadas correlações entre dados dendrométricos e de densidade de dosséis de Eucalyptus spp. coletados na Unidade Florestal de Capão Bonito da empresa FIBRIA S/A e dados radiométricos extraídos de imagens do sensor TM/Landsat 5, provenientes de duas passagens (datas próximas à coleta de dados em campo) sobre a área de estudo. Os resultados indicaram que as maiores correlações foram identificadas nas relações estabelecidas entre as dimensões da copa e a altura dos dosséis com dados da banda espectral do infravermelho próximo (ρs4), independentemente da data de passagem do satélite. As estimativas da distribuição espacial de dados dendrométricos e de densidade do dossel (D) fundamentadas na caracterização espectral foram consistentes em relação à distribuição espacial das idades dos plantios para o período de realização do trabalho. Foram aplicados testes estatísticos para avaliar diferenças de desempenho de modelos empíricos definidos a partir de dados radiométricos de datas diferentes. Os resultados indicaram que houve diferença significativa entre os modelos estabelecidos a partir de dados provenientes de datas diferentes.Universidade Federal de Lavras (UFLA)2016-04-042017-08-01T20:16:02Z2017-08-01T20:16:02Z2017-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfPACHECO, L. R. F. et al. Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5. CERNE, Lavras, v. 18, n. 1, p. 105-116, jan./mar. 2012.http://repositorio.ufla.br/jspui/handle/1/147262317-63420104-7760reponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAengCopyright (c) 2016 CERNEAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessPacheco, Ludmila Roque FerrazPonzoni, Flávio JorgeSantos, Sandra Benfica dosAndrades Filho, Clódis de OliveiraMello, Márcio PupinCampos, Rogério Costa2021-03-14T21:32:45Zoai:localhost:1/14726Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2021-03-14T21:32:45Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5 Caracterização estrutural de dosséis de Eucalyptus spp. mediante dados radiométricos TM/Landsat 5 |
title |
Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5 |
spellingShingle |
Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5 Pacheco, Ludmila Roque Ferraz Spectral characterization Estimate of biophysical data Canopy reflectance Caracterização espectral Estimativa de dados biofísicos Reflectância de dosséis |
title_short |
Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5 |
title_full |
Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5 |
title_fullStr |
Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5 |
title_full_unstemmed |
Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5 |
title_sort |
Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5 |
author |
Pacheco, Ludmila Roque Ferraz |
author_facet |
Pacheco, Ludmila Roque Ferraz Ponzoni, Flávio Jorge Santos, Sandra Benfica dos Andrades Filho, Clódis de Oliveira Mello, Márcio Pupin Campos, Rogério Costa |
author_role |
author |
author2 |
Ponzoni, Flávio Jorge Santos, Sandra Benfica dos Andrades Filho, Clódis de Oliveira Mello, Márcio Pupin Campos, Rogério Costa |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Pacheco, Ludmila Roque Ferraz Ponzoni, Flávio Jorge Santos, Sandra Benfica dos Andrades Filho, Clódis de Oliveira Mello, Márcio Pupin Campos, Rogério Costa |
dc.subject.por.fl_str_mv |
Spectral characterization Estimate of biophysical data Canopy reflectance Caracterização espectral Estimativa de dados biofísicos Reflectância de dosséis |
topic |
Spectral characterization Estimate of biophysical data Canopy reflectance Caracterização espectral Estimativa de dados biofísicos Reflectância de dosséis |
description |
Empirical approaches 14726, more recently, physical approaches, have grounded the establishment of logical connections between radiometric variables derived from remote data and biophysical variables derived from vegetation cover. This study was aimed at evaluating correlations of dendrometric and density data from canopies of Eucalyptus spp., as collected in Capão Bonito forest unit, with radiometric data from imagery acquired by the TM/Landsat-5 sensor on two orbital passages over the study site (dates close to fi eld data collection). Results indicate that stronger correlations were identifi ed between crown dimensions and canopy height with near-infrared spectral band data (ρs4), irrespective of the satellite passage date. Estimates of spatial distribution of dendrometric data and canopy density (D) using spectral characterization were consistent with the spatial distribution of tree ages during the study period. Statistical tests were applied to evaluate performance disparities of empirical models depending on which date data were acquired. Results indicated a signifi cant difference between models based on distinct data acquisition dates. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-04 2017-08-01T20:16:02Z 2017-08-01T20:16:02Z 2017-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
PACHECO, L. R. F. et al. Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5. CERNE, Lavras, v. 18, n. 1, p. 105-116, jan./mar. 2012. http://repositorio.ufla.br/jspui/handle/1/14726 |
identifier_str_mv |
PACHECO, L. R. F. et al. Structural characterization of canopies of Eucalyptus spp. using radiometric data from TM/Landsat 5. CERNE, Lavras, v. 18, n. 1, p. 105-116, jan./mar. 2012. |
url |
http://repositorio.ufla.br/jspui/handle/1/14726 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 CERNE Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 CERNE Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Lavras (UFLA) |
publisher.none.fl_str_mv |
Universidade Federal de Lavras (UFLA) |
dc.source.none.fl_str_mv |
2317-6342 0104-7760 reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835070919081984 |