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| Registros recuperados : 124 | |
| 2. |  | DURIGAN, M. E.; FIGUEIREDO FILHO, A. Florística e fitossociologia de uma Floresta Ombrófila Mista em São João do Triunfo, PR. SBPN - Scientific Journal, Curitiba, v. 4, supl. 1, p. 70, 2000. Edição dos Anais da 8ª Reunião Anual da Sociedade Brasileira de Pesquisadores Nikkeis, Curitiba, 2000. Resumos.| Biblioteca(s): Embrapa Florestas. |
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| 5. | | FIGUEIREDO FILHO, A.; BERNARDI, A. R. Comportamento da casca ao longo do tronco em plantios de Pinus elliottii estabelecidos no litoral e planalto do Estado de Santa Catarina. In: CONGRESSO FLORESTAL PANAMERICANO, 1.; CONGRESSO FLORESTAL BRASILEIRO, 7., 1993, Curitiba. Floresta para o Desenvolvimento: Política, Ambiente, Tecnologia e Mercado: anais. São Paulo: SBS; [S.l.]: SBEF, 1993. v. 2, p. 495-498.| Biblioteca(s): Embrapa Florestas. |
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| 6. | | BOBROWSKI, R.; BIONDI, D.; FIGUEIREDO FILHO, A. Dinâmica da distribuição diamétrica na arborização de ruas da cidade de Curitiba, Paraná, Brasil. Scientia Forestalis, Piracicaba, v. 40, n. 94, p. 167-178, jun. 2012.| Biblioteca(s): Embrapa Florestas. |
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| 7. | | TÉO, S. J.; FIGUEIREDO FILHO, A.; LINGNAU, C. Análise espacial do estresse competitivo, incremento diamétrico e estrutura de uma floresta ombrófila mista, Irati, PR. Floresta, Curitiba, v. 45, n. 4, p. 681-693, out./dez. 2015.| Biblioteca(s): Embrapa Florestas. |
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| 8. | | CANETTI, A.; FIGUEIREDO FILHO, A.; BRAZ, E. M. Alteração da estrutura horizontal de floresta em Sinop, MT, após 7 anos de exploração. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 14., 2015, Colombo. Anais... Colombo: Embrapa Florestas, 2015. p. 12-13. (Embrapa Florestas. Documentos, 278). Resumo.| Biblioteca(s): Embrapa Florestas. |
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| 9. | | ROSOT, N. C.; MACHADO, S. do A.; FIGUEIREDO FILHO, A. Análise estrutural de uma floresta tropical como subsidio básico para elaboração de um plano de manejo florestal. Silvicultura em São Paulo, São Paulo, v. 16-A, pt. 1, p. 468-490, 1982. Edição dos Anais do Congresso Nacional sobre Essências Nativas, 1982, Campos do Jordão.| Biblioteca(s): Embrapa Florestas. |
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| 12. | | FIGUEIREDO FILHO, A.; MACHADO, S. do A.; ROSOT, N. C. Estimativas volumétricas por unidade de área em florestas naturais. Silvicultura em São Paulo, São Paulo, v. 16-A, pt. 1, p. 491-504, 1982. Edição dos Anais do Congresso Nacional sobre Essências Nativas, 1982, Campos do Jordão.| Biblioteca(s): Embrapa Florestas. |
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| 13. | | DURIGAN, M. E.; FIGUEIREDO FILHO, A.; LEME, M. C. J. Avaliação proteica de espécies florestais de uma Floresta Ombrófila Mista em São João do Triunfo, PR. SBPN - Scientific Journal, Curitiba, v. 4, supl. 1, p. 71, 2000. Edição dos Anais da 8ª Reunião Anual da Sociedade Brasileira de Pesquisadores Nikkeis, Curitiba, 2000. Resumos.| Biblioteca(s): Embrapa Florestas. |
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| 17. | | MACHADO, S. do A.; ROSOT, N. C.; FIGUEIREDO FILHO, A. Distribuição em uma floresta tropical úmida da Amazônia brasileira. Silvicultura em São Paulo, São Paulo, v. 16-A, pt. 1, p. 399-406, 1982. Edição dos Anais do Congresso Nacional sobre Essências Nativas, 1982, Campos do Jordão.| Biblioteca(s): Embrapa Florestas. |
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| 18. | | DURIGAN, M. E.; FIGUEIREDO FILHO, A.; SANQUETTA, C. R. Distribuição diamétrica e dinâmica de uma Floresta Ombrófila Mista em São João do Triunfo, PR. SBPN - Scientific Journal, Curitiba, v. 4, supl. 1, p. 70, 2000. Edição dos Anais da 8ª Reunião Anual da Sociedade Brasileira de Pesquisadores Nikkeis, Curitiba, 2000. Resumos.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 124 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
05/10/2020 |
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Data da última atualização: |
09/02/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
NASCIMENTO, R. G. M.; VANCLAY, J. K.; FIGUEIREDO FILHO, A.; MACHADO, S. do A.; RUSCHEL, A. R.; HIRAMATSU, N. A.; FREITAS, L. J. M. de. |
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Afiliação: |
Rodrigo Geroni Mendes Nascimento, UFRA; Jerome Klaas Vanclay, Southern Cross University; Afonso Figueiredo Filho, UNICENTRO; Sebastião do Amaral Machado, UFPR; ADEMIR ROBERTO RUSCHEL, CPATU; Nelson Akira Hiramatsu, Eucatex - Industry and Commerce; LUCAS JOSE MAZZEI DE FREITAS, CPATU. |
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Título: |
The tree height estimated by non-power models on volumetric models provides reliable predictions of wood volume: The Amazon species height modelling issue. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Trees, Forests and People, v. 2, Article 100028, Dec. 2020. |
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DOI: |
https://doi.org/10.1016/j.tfp.2020.100028 |
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Idioma: |
Inglês |
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Conteúdo: |
Allometries that include height as independent variable usually provide greater accuracy on estimates of volume, biomass or individual carbon than other prediction strategies that rely only diameter at breast height as independent variable. However, when these models are applied in Amazon Forest Inventories, it is common to use estimated heights rather than measured heights to prepare volume, biomass or carbon estimates. This practice is common, but rarely discussed and the effect on predictions and precision is usually overlooked. The aim of this study was to examine hypsometric models and evaluate the effect of estimated height on merchantable volume prediction in Eastern Amazonian forests. The study area was a 3,786 ha Forest Management Unit owned by Jari Florestal S.A., in the Jari Valley Region of the State of Pará, Brazil. The data includes 16,099 trees of 25 species, measured and harvested in 2006. Ten percent of the data were reserved for validation of the hypsometric and volumetric estimates. Five hypsometric models and two modelling techniques (linear regression and mixed-effects model) were examined. The choice of best model was based on graphical analyses of residuals, distribution of residuals, heteroscedasticity of error and presence of outliers as assessed by h-values, DFFITS and Cook's distance. The hypsometric relationship and volumetric estimates using DBH and DBH with estimated height were validated with Graybill's test, Theil's error decomposition, Efficiency, Equivalence test and Tukey's test for species estimates level. Heights estimated using a semi-logarithmic mixed-effects model can improve predictions from volume equations. The results show that exploratory data analysis and validation process helped to provide estimates with greater efficiency and should be adopted in related studies. The prediction of height associated with volumetric models for six different species provided volumetric estimates with an error below 5% for the global average volume. The estimated height by the mixed-effect non-power law model should be included in double input models previously developed for volume prediction. MenosAllometries that include height as independent variable usually provide greater accuracy on estimates of volume, biomass or individual carbon than other prediction strategies that rely only diameter at breast height as independent variable. However, when these models are applied in Amazon Forest Inventories, it is common to use estimated heights rather than measured heights to prepare volume, biomass or carbon estimates. This practice is common, but rarely discussed and the effect on predictions and precision is usually overlooked. The aim of this study was to examine hypsometric models and evaluate the effect of estimated height on merchantable volume prediction in Eastern Amazonian forests. The study area was a 3,786 ha Forest Management Unit owned by Jari Florestal S.A., in the Jari Valley Region of the State of Pará, Brazil. The data includes 16,099 trees of 25 species, measured and harvested in 2006. Ten percent of the data were reserved for validation of the hypsometric and volumetric estimates. Five hypsometric models and two modelling techniques (linear regression and mixed-effects model) were examined. The choice of best model was based on graphical analyses of residuals, distribution of residuals, heteroscedasticity of error and presence of outliers as assessed by h-values, DFFITS and Cook's distance. The hypsometric relationship and volumetric estimates using DBH and DBH with estimated height were validated with Graybill's test, Theil's error decomposition, Effici... Mostrar Tudo |
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Thesagro: |
Floresta; Floresta Tropical; Inventário Florestal; Madeira. |
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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/item/216411/1/Geroni1-s2.0-S2666719320300285-main.pdf
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Marc: |
LEADER 03014naa a2200253 a 4500
001 2125280
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008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.tfp.2020.100028$2DOI
100 1 $aNASCIMENTO, R. G. M.
245 $aThe tree height estimated by non-power models on volumetric models provides reliable predictions of wood volume$bThe Amazon species height modelling issue.$h[electronic resource]
260 $c2020
520 $aAllometries that include height as independent variable usually provide greater accuracy on estimates of volume, biomass or individual carbon than other prediction strategies that rely only diameter at breast height as independent variable. However, when these models are applied in Amazon Forest Inventories, it is common to use estimated heights rather than measured heights to prepare volume, biomass or carbon estimates. This practice is common, but rarely discussed and the effect on predictions and precision is usually overlooked. The aim of this study was to examine hypsometric models and evaluate the effect of estimated height on merchantable volume prediction in Eastern Amazonian forests. The study area was a 3,786 ha Forest Management Unit owned by Jari Florestal S.A., in the Jari Valley Region of the State of Pará, Brazil. The data includes 16,099 trees of 25 species, measured and harvested in 2006. Ten percent of the data were reserved for validation of the hypsometric and volumetric estimates. Five hypsometric models and two modelling techniques (linear regression and mixed-effects model) were examined. The choice of best model was based on graphical analyses of residuals, distribution of residuals, heteroscedasticity of error and presence of outliers as assessed by h-values, DFFITS and Cook's distance. The hypsometric relationship and volumetric estimates using DBH and DBH with estimated height were validated with Graybill's test, Theil's error decomposition, Efficiency, Equivalence test and Tukey's test for species estimates level. Heights estimated using a semi-logarithmic mixed-effects model can improve predictions from volume equations. The results show that exploratory data analysis and validation process helped to provide estimates with greater efficiency and should be adopted in related studies. The prediction of height associated with volumetric models for six different species provided volumetric estimates with an error below 5% for the global average volume. The estimated height by the mixed-effect non-power law model should be included in double input models previously developed for volume prediction.
650 $aFloresta
650 $aFloresta Tropical
650 $aInventário Florestal
650 $aMadeira
700 1 $aVANCLAY, J. K.
700 1 $aFIGUEIREDO FILHO, A.
700 1 $aMACHADO, S. do A.
700 1 $aRUSCHEL, A. R.
700 1 $aHIRAMATSU, N. A.
700 1 $aFREITAS, L. J. M. de
773 $tTrees, Forests and People$gv. 2, Article 100028, Dec. 2020.
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