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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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Esconder MarcMostrar Marc Completo |
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Registro original: |
Embrapa Cerrados (CPAC) |
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Biblioteca |
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Tipo/Formato |
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Registro |
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URL |
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| Registros recuperados : 12 | |
| 2. |  | TONATO, F.; PEDREIRA, B. C. e; PEDREIRA, C. G. S.; PEQUENO, D. N. L. Aveia preta e azevém anual colhidos por interceptação de luz ou intervalo fixo de tempo em sistemas integrados de agricultura e pecuária no Estado de São Paulo. Ciência Rural, Santa Maria, v. 44, n. 1, p. 104-110, jan, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agrossilvipastoril; Embrapa Amazônia Ocidental. |
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| 5. | | FERNANDES, J. M. C.; PAVAN, W.; PEQUENO, D.; WIEST, R.; HOLBIG, C. A.; OLIVEIRA, F.; HOOGENBOOM, G. Improving crop pest/disease modeling. In: BOOTE, K. (Ed.). Advances in crop modelling for a sustainable agriculture. Cambridge, UK: Burleigh Dodds Science Publishing, 2019.| Tipo: Capítulo em Livro Técnico-Científico |
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| 6. | | PEREIRA, C. G. S.; SILVA, V. J. da; GUIMARÃES, M. S.; PEQUENO, D. N. L.; TONATO, F. Fixed versus variable rest period effects on herbage accumulation and canopy structure of grazed 'Tifton 85' and 'Jiggs' Bermuda grass. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 1, p. 113-120, jan. 2018. Título em português: Efeitos de períodos de descanso fixo e variável no acúmulo de forragem e estrutura do dossel de capim-bermuda 'Jiggs' e 'Tifton 85' sob pastejo.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 7. | | MORENO, L. S. B.; BOOTE, K. J.; SOLLENBERGER, L. D.; KOHMANN, M. M.; PEQUENO, D. N. L. Shade and nitrogen effects on regrowth dynamics, partitioning, and herbage production of Jiggs Bermudagrass and Mulato-2 brachiaria hybrid. In: ASA, CSSA-SSSA INTERNATIONAL ANNUAL MEETINGS, 2015, Minneapolis. Synergy in science: partnering for solutions: proceedings. Madison: American Soceity of Agronomy, 2015. Resumo 307-38.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pesca e Aquicultura. |
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| 8. | | SANTOS, M. L. dos; SANTOS, P. M.; BOOTE, K. J.; PEQUENO, D. N. L.; BARIONI, L. G.; CUADRA, S. V.; HOOGENBOOM, G. Applying the CROPGRO Perennial Forage Model for long-term estimates of Marandu palisadegrass production in livestock management scenarios in Brazil. Field Crops Research, v. 286, 108629, Oct. 2022. 16 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| 9. | | TONATO, F.; PEDREIRA, C. G.; PEQUENO, D. N.; AQUINO, D. C.; CARVALHO, M. S.; FERREIRA, A. S.; GUIMARAES, M. S.; SILVA, V. J.; NGULUVE, D. Total and monthly yield of annual ryegrass and arrowleaf clover grown in pure and mixed stands with or without nitrogen fertilization in Southeastern Brazil. In: ASA-CSSA-SSSA INTERNATIONAL ANNUAL MEETINGS, 2011, San Antonio. Fundamental for life: soil, crop, and environmental sciences: abstracts. Madison: ASA: CSSA: SSSA, 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 10. | | PEQUENO, D. N. L.; FERREIRA, T. B.; FERNANDES, J. M. C.; SINGH, P. K.; PAVAN, W.; SONDER, K.; ROBERTSON, R.; KRUPNIK, T. J.; ERENSTEIN, E.; ASSENG, S. Production vulnerability to wheat blast disease under climate change. Nature Climate Change, v. 14, n. 2, p. 178-183, Feb. 2024.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| 11. | | FERREIRA, T. B.; PAVAN, W.; FERNANDES, J. M. C.; ASSENG, S.; OLIVEIRA, F. A. de; HÖLBIG, C. A.; PEQUENO, D. N. L.; DALMAGO, G. A.; ZANATTA, A. L.; HOOGENBOOM, G. Coupling a pest and disease damage module with CSM-NWheat: a wheat crop simulation model. Transactions of the ASABE, v. 64, n. 6, p. 2061-2071, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| 12. | | RAMIREZ-VILLEGAS, J.; MOLERO MILAN, A.; ALEXANDROV, N.; ASSENG, S.; CHALLINOR, A. J.; CROSSA, J.; VAN EEUWIJK, F.; GHANEM, M. E.; GRENIER, C.; HEINEMANN, A. B.; WANG, J.; JULIANA, P.; KEHEL, Z.; KHOLOVA, J; KOO, J.; PEQUENO, D.; QUIROZ, R.; REBOLLEDO, M. C.; SUKUMARAN, S.; VADEZ, V.; WHITE, J. W.; REYNOLDS, M. CGIAR modeling approaches for resource-constrained scenarios: I. Accelerating crop breeding for a changing climate. Crop Science, 2020. Online Version of Record before inclusion in an issue.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| Registros recuperados : 12 | |
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