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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
15/12/2020 |
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Data da última atualização: |
15/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
WIEDERKEHR, N. C.; GAMA, F. F.; CASTRO, P. B. N.; BISPO, P. da C.; BALZTER, H.; SANO, E. E.; SANTOS, J. R.; LIESENBERG, V.; MURA, J. C. |
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Afiliação: |
EDSON EYJI SANO, CPAC. |
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Título: |
Discriminating Forest Successional Stages, Forest Degradation, and Land Use in Central Amazon Using ALOS/PALSAR-2 Full-Polarimetric Data. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Remote Sensing, v. 12, n. 21, 2020. |
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Idioma: |
Português |
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Conteúdo: |
We discriminated different successional forest stages, forest degradation, and land use classes in the Tapajós National Forest (TNF), located in the Central Brazilian Amazon. We used full polarimetric images from ALOS/PALSAR-2 that have not yet been tested for land use and land cover (LULC) classification, neither for forest degradation classification in the TNF. Our specific objectives were: (1) to test the potential of ALOS/PALSAR-2 full polarimetric images to discriminate LULC classes and forest degradation; (2) to determine the optimum subset of attributes to be used in LULC classification and forest degradation studies; and (3) to evaluate the performance of Random Forest (RF) and Support Vector Machine (SVM) supervised classifications to discriminate LULC classes and forest degradation. PALSAR-2 images from 2015 and 2016 were processed to generate Radar Vegetation Index, Canopy Structure Index, Volume Scattering Index, Biomass Index, and Cloude?Pottier, van Zyl, Freeman?Durden, and Yamaguchi polarimetric decompositions. To determine the optimum subset, we used principal component analysis in order to select the best attributes to discriminate the LULC classes and forest degradation, which were classified by RF. Based on the variable importance score, we selected the four first attributes for 2015, alpha, anisotropy, volumetric scattering, and double-bounce, and for 2016, entropy, anisotropy, surface scattering, and biomass index, subsequently classified by SVM. Individual backscattering indexes and polarimetric decompositions were also considered in both RF and SVM classifiers. Yamaguchi decomposition performed by RF presented the best results, with an overall accuracy (OA) of 76.9% and 83.3%, and Kappa index of 0.70 and 0.80 for 2015 and 2016, respectively. The optimum subset classified by RF showed an OA of 75.4% and 79.9%, and Kappa index of 0.68 and 0.76 for 2015 and 2016, respectively. RF exhibited superior performance in relation to SVM in both years. Polarimetric attributes exhibited an adequate capability to discriminate forest degradation and classes of different ecological succession from the ones with less vegetation cover. MenosWe discriminated different successional forest stages, forest degradation, and land use classes in the Tapajós National Forest (TNF), located in the Central Brazilian Amazon. We used full polarimetric images from ALOS/PALSAR-2 that have not yet been tested for land use and land cover (LULC) classification, neither for forest degradation classification in the TNF. Our specific objectives were: (1) to test the potential of ALOS/PALSAR-2 full polarimetric images to discriminate LULC classes and forest degradation; (2) to determine the optimum subset of attributes to be used in LULC classification and forest degradation studies; and (3) to evaluate the performance of Random Forest (RF) and Support Vector Machine (SVM) supervised classifications to discriminate LULC classes and forest degradation. PALSAR-2 images from 2015 and 2016 were processed to generate Radar Vegetation Index, Canopy Structure Index, Volume Scattering Index, Biomass Index, and Cloude?Pottier, van Zyl, Freeman?Durden, and Yamaguchi polarimetric decompositions. To determine the optimum subset, we used principal component analysis in order to select the best attributes to discriminate the LULC classes and forest degradation, which were classified by RF. Based on the variable importance score, we selected the four first attributes for 2015, alpha, anisotropy, volumetric scattering, and double-bounce, and for 2016, entropy, anisotropy, surface scattering, and biomass index, subsequently classified by SVM. Individ... Mostrar Tudo |
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Thesagro: |
Degradação Ambiental; Floresta; Uso da Terra. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219224/1/SANO-DISCRIMINATING-FOREST-SUCCESSIONAL-STAGES.pdf
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Marc: |
LEADER 02958naa a2200265 a 4500
001 2128151
005 2020-12-15
008 2020 bl uuuu u00u1 u #d
100 1 $aWIEDERKEHR, N. C.
245 $aDiscriminating Forest Successional Stages, Forest Degradation, and Land Use in Central Amazon Using ALOS/PALSAR-2 Full-Polarimetric Data.$h[electronic resource]
260 $c2020
520 $aWe discriminated different successional forest stages, forest degradation, and land use classes in the Tapajós National Forest (TNF), located in the Central Brazilian Amazon. We used full polarimetric images from ALOS/PALSAR-2 that have not yet been tested for land use and land cover (LULC) classification, neither for forest degradation classification in the TNF. Our specific objectives were: (1) to test the potential of ALOS/PALSAR-2 full polarimetric images to discriminate LULC classes and forest degradation; (2) to determine the optimum subset of attributes to be used in LULC classification and forest degradation studies; and (3) to evaluate the performance of Random Forest (RF) and Support Vector Machine (SVM) supervised classifications to discriminate LULC classes and forest degradation. PALSAR-2 images from 2015 and 2016 were processed to generate Radar Vegetation Index, Canopy Structure Index, Volume Scattering Index, Biomass Index, and Cloude?Pottier, van Zyl, Freeman?Durden, and Yamaguchi polarimetric decompositions. To determine the optimum subset, we used principal component analysis in order to select the best attributes to discriminate the LULC classes and forest degradation, which were classified by RF. Based on the variable importance score, we selected the four first attributes for 2015, alpha, anisotropy, volumetric scattering, and double-bounce, and for 2016, entropy, anisotropy, surface scattering, and biomass index, subsequently classified by SVM. Individual backscattering indexes and polarimetric decompositions were also considered in both RF and SVM classifiers. Yamaguchi decomposition performed by RF presented the best results, with an overall accuracy (OA) of 76.9% and 83.3%, and Kappa index of 0.70 and 0.80 for 2015 and 2016, respectively. The optimum subset classified by RF showed an OA of 75.4% and 79.9%, and Kappa index of 0.68 and 0.76 for 2015 and 2016, respectively. RF exhibited superior performance in relation to SVM in both years. Polarimetric attributes exhibited an adequate capability to discriminate forest degradation and classes of different ecological succession from the ones with less vegetation cover.
650 $aAmazonia
650 $aDegradação Ambiental
650 $aFloresta
650 $aUso da Terra
700 1 $aGAMA, F. F.
700 1 $aCASTRO, P. B. N.
700 1 $aBISPO, P. da C.
700 1 $aBALZTER, H.
700 1 $aSANO, E. E.
700 1 $aSANTOS, J. R.
700 1 $aLIESENBERG, V.
700 1 $aMURA, J. C.
773 $tRemote Sensing$gv. 12, n. 21, 2020.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
22/12/2023 |
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Data da última atualização: |
05/04/2024 |
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Tipo da produção científica: |
Autoria/Organização/Edição de Livros |
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Autoria: |
OLIVEIRA, T. K. de; AMARAL, E. F. do; FRANKE, I. L. (ed.). |
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Afiliação: |
TADARIO KAMEL DE OLIVEIRA, CPAF-AC; EUFRAN FERREIRA DO AMARAL, CPAF-AC; IDESIO LUIS FRANKE, CPAF-AC. |
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Título: |
Aspectos produtivos e ambientais de sistemas agroflorestais no Projeto Reca. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Brasília, DF: Embrapa, 2023. |
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Páginas: |
149 p. |
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Idioma: |
Português |
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Notas: |
ODS 1; ODS 2; ODS 12; ODS 13; ODS 15. |
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Conteúdo: |
Nesta obra, apresenta-se um histórico breve do processo de organização e ainda de pesquisas e parcerias institucionais voltadas ao aperfeiçoamento de sistemas agroflorestais no Projeto Reflorestamento Econômico Consorciado e Adensado (Reca) ao longo do tempo. Esta publicação está de acordo com os Objetivos de Desenvolvimento Sustentável 1 (Erradicação da Pobreza), 2 (Fome Zero e Agricultura Sustentável), 12 (Consumo e Produção Sustentáveis), 13 (Ação contra a Mudança Global do Clima) e 15 (Vida Terrestre). Os Objetivos de Desenvolvimento Sustentável (ODS) são uma coleção de 17 metas globais estabelecidas pela Assembleia Geral das Nações Unidas e contam com o apoio da Embrapa para que sejam atingidas. |
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Palavras-Chave: |
Agroforestería; Agroforestry systems; Amazonia Occidental; Amazônia Ocidental; Eficacia reproductora; Evaluación de impacto ambiental; Nova Califórnia (RO); Projeto Reca; Rondônia; Selo ODS 1; Selo ODS 12; Selo ODS 13; Selo ODS 15; Selo ODS 2; Sistemas agroflorestais (SAF); Western Amazon. |
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Thesagro: |
Agrossilvicultura; Eficiência Reprodutiva; Impacto Ambiental; Produtividade. |
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Thesaurus NAL: |
Agroforestry; Crop yield; Environmental assessment; Reproductive efficiency. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163317/1/27728.pdf
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Marc: |
LEADER 02019nam a2200445 a 4500
001 2163317
005 2024-04-05
008 2023 bl uuuu 00u1 u #d
100 1 $aOLIVEIRA, T. K. de
245 $aAspectos produtivos e ambientais de sistemas agroflorestais no Projeto Reca.$h[electronic resource]
260 $aBrasília, DF: Embrapa$c2023
300 $a149 p.
500 $aODS 1; ODS 2; ODS 12; ODS 13; ODS 15.
520 $aNesta obra, apresenta-se um histórico breve do processo de organização e ainda de pesquisas e parcerias institucionais voltadas ao aperfeiçoamento de sistemas agroflorestais no Projeto Reflorestamento Econômico Consorciado e Adensado (Reca) ao longo do tempo. Esta publicação está de acordo com os Objetivos de Desenvolvimento Sustentável 1 (Erradicação da Pobreza), 2 (Fome Zero e Agricultura Sustentável), 12 (Consumo e Produção Sustentáveis), 13 (Ação contra a Mudança Global do Clima) e 15 (Vida Terrestre). Os Objetivos de Desenvolvimento Sustentável (ODS) são uma coleção de 17 metas globais estabelecidas pela Assembleia Geral das Nações Unidas e contam com o apoio da Embrapa para que sejam atingidas.
650 $aAgroforestry
650 $aCrop yield
650 $aEnvironmental assessment
650 $aReproductive efficiency
650 $aAgrossilvicultura
650 $aEficiência Reprodutiva
650 $aImpacto Ambiental
650 $aProdutividade
653 $aAgroforestería
653 $aAgroforestry systems
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aEficacia reproductora
653 $aEvaluación de impacto ambiental
653 $aNova Califórnia (RO)
653 $aProjeto Reca
653 $aRondônia
653 $aSelo ODS 1
653 $aSelo ODS 12
653 $aSelo ODS 13
653 $aSelo ODS 15
653 $aSelo ODS 2
653 $aSistemas agroflorestais (SAF)
653 $aWestern Amazon
700 1 $aAMARAL, E. F. do
700 1 $aFRANKE, I. L.
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Embrapa Acre (CPAF-AC) |
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