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| Registros recuperados : 6 | |
| 1. |  | ARBEX, W.; CARVALHO, L. A. V. de; SILVA, M. V. B. da; YAMAGISHI, M. E. B. Modelagem difusa para suporte à decisão na descoberta de SNPs em sequências de cDNA. In: CONGRESSO BRASILEIRO DE AGROINFORMÁTICA, 7., 2009, Viçosa, MG. Anais... Viçosa, MG: UFV, 2009. Não paginado. SBIAgro 2009.| Biblioteca(s): Embrapa Agricultura Digital. |
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| 4. | | GONCALVES, J. N. dos S.; FIGUEIREDO, L. A. de; RAZOOK, A. G.; BONILHA NETO, L. M.; PACOLA, L. J.; TROVO, J. B. de F.; PACKER, I. U.; SILVA, M. V. B. da; RUGGIERI, A. C. Prova de ganho de peso de Sertaozinho: efeitos geneticos e de ambiente sobre caracteristicas de crescimento. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 33., 1996, Fortaleza, CE. Anais. Fortaleza: Sociedade Brasileira de Zootecnia, 1996. p.121-123. p.121-123| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 5. | | LEDUR, M. C.; FERNANDES, L. T.; ZANELLA, J. R. C.; SCHAEFER, R.; PEIXOTO, J. de O.; MILLER, L. C.; SILVA, M. V. B. da. Prospecting and identifying genes related to resistance/susceptibility to postweaning multisystemic wasting syndrome (PMWS) In: SIMPÓSIO EMBRAPA LABEX DE SANIDADE ANIMAL, 1, Campo Grande, MS, 2009. Anais.... Campo Grande: Embrapa Gado de Corte, Labex-USA, CNPq, 2009. 1 CD-ROM. Projeto/Plano de Ação: 01.02.102.10-10| Biblioteca(s): Embrapa Suínos e Aves. |
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| Registros recuperados : 6 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
24/08/2016 |
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Data da última atualização: |
11/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ARRUDA, G. P. de; DEMATTÊ, J. A. M.; CHAGAS, C. da S.; FIORIO, P. R.; SOUZA, A. B. e. |
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Afiliação: |
GUSTAVO PAIS DE ARRUDA, APagri Agronomic Consultancy; JOSÉ A. M. DEMATTÊ, USP/ESALQ; CESAR DA SILVA CHAGAS, CNPS; PETERSON RICARDO FIORIO, USP/ESALQ; ARNALDO BARROS E SOUZA, USP/ESALQ. |
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Título: |
Digital soil mapping using reference area and artificial neural networks. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 73, n. 3, p. 266-273, May/Jun. 2016. |
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DOI: |
10.1590/0103-9016-2015-0131 |
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Idioma: |
Inglês |
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Conteúdo: |
Digital soil mapping is an alternative for the recognition of soil classes in areas where pedological surveys are not available. The main aim of this study was to obtain a digital soil map using artificial neural networks (ANN) and environmental variables that express soillandscape relationships. This study was carried out in an area of 11,072 ha located in the Barra Bonita municipality, state of São Paulo, Brazil. A soil survey was obtained from a reference area of approximately 500 ha located in the center of the area studied. With the mapping units identified together with the environmental variables elevation, slope, slope plan, slope profile, convergence index, geology and geomorphic surfaces, a supervised classification by ANN was implemented. The neural network simulator used was the Java NNS with the learning algorithm "back propagation." Reference points were collected for evaluating the performance of the digital map produced. The occurrence of soils in the landscape obtained in the reference area was observed in the following digital classification: medium-textured soils at the highest positions of the landscape, originating from sandstone, and clayey loam soils in the end thirds of the hillsides due to the greater presence of basalt. The variables elevation and slope were the most important factors for discriminating soil class through the ANN. An accuracy level of 82% between the reference points and the digital classification was observed. The methodology proposed allowed for a preliminary soil classification of an area not previously mapped using mapping units obtained in a reference area MenosDigital soil mapping is an alternative for the recognition of soil classes in areas where pedological surveys are not available. The main aim of this study was to obtain a digital soil map using artificial neural networks (ANN) and environmental variables that express soillandscape relationships. This study was carried out in an area of 11,072 ha located in the Barra Bonita municipality, state of São Paulo, Brazil. A soil survey was obtained from a reference area of approximately 500 ha located in the center of the area studied. With the mapping units identified together with the environmental variables elevation, slope, slope plan, slope profile, convergence index, geology and geomorphic surfaces, a supervised classification by ANN was implemented. The neural network simulator used was the Java NNS with the learning algorithm "back propagation." Reference points were collected for evaluating the performance of the digital map produced. The occurrence of soils in the landscape obtained in the reference area was observed in the following digital classification: medium-textured soils at the highest positions of the landscape, originating from sandstone, and clayey loam soils in the end thirds of the hillsides due to the greater presence of basalt. The variables elevation and slope were the most important factors for discriminating soil class through the ANN. An accuracy level of 82% between the reference points and the digital classification was observed. The methodology propo... Mostrar Tudo |
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Palavras-Chave: |
Atributos da paisagem; Aulas pedológicas; Extrapolação de mapas; Mineração de dados; Pesquisa pedológica. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1051574/1/2016022.pdf
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Marc: |
LEADER 02390naa a2200241 a 4500
001 2051574
005 2021-11-11
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1590/0103-9016-2015-0131$2DOI
100 1 $aARRUDA, G. P. de
245 $aDigital soil mapping using reference area and artificial neural networks.$h[electronic resource]
260 $c2016
520 $aDigital soil mapping is an alternative for the recognition of soil classes in areas where pedological surveys are not available. The main aim of this study was to obtain a digital soil map using artificial neural networks (ANN) and environmental variables that express soillandscape relationships. This study was carried out in an area of 11,072 ha located in the Barra Bonita municipality, state of São Paulo, Brazil. A soil survey was obtained from a reference area of approximately 500 ha located in the center of the area studied. With the mapping units identified together with the environmental variables elevation, slope, slope plan, slope profile, convergence index, geology and geomorphic surfaces, a supervised classification by ANN was implemented. The neural network simulator used was the Java NNS with the learning algorithm "back propagation." Reference points were collected for evaluating the performance of the digital map produced. The occurrence of soils in the landscape obtained in the reference area was observed in the following digital classification: medium-textured soils at the highest positions of the landscape, originating from sandstone, and clayey loam soils in the end thirds of the hillsides due to the greater presence of basalt. The variables elevation and slope were the most important factors for discriminating soil class through the ANN. An accuracy level of 82% between the reference points and the digital classification was observed. The methodology proposed allowed for a preliminary soil classification of an area not previously mapped using mapping units obtained in a reference area
653 $aAtributos da paisagem
653 $aAulas pedológicas
653 $aExtrapolação de mapas
653 $aMineração de dados
653 $aPesquisa pedológica
700 1 $aDEMATTÊ, J. A. M.
700 1 $aCHAGAS, C. da S.
700 1 $aFIORIO, P. R.
700 1 $aSOUZA, A. B. e.
773 $tScientia Agricola, Piracicaba$gv. 73, n. 3, p. 266-273, May/Jun. 2016.
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