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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
14/09/2018 |
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Data da última atualização: |
19/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, F. M.; TERRA. G.; CHAER, G. M.; MONTE, M. A. |
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Afiliação: |
FELIPE MARTINI SANTOS, UFRRJ; GILBERTO TERRA, SUCUPIRA AGROFLORESTA, RJ; GUILHERME MONTANDON CHAER, CNPAB; MARCO ANTONIO MONTE, UFRRJ. |
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Título: |
Modeling the height-diameter relationship and volume of young African mahoganies established in successional agroforestry systems in northeastern Brazil. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
New Forests, v. 50, n. 3, p. 389-407, 2019. |
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ISSN: |
1573-5095 Online |
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DOI: |
https://doi.org/10.1007/s11056-018-9665- |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to fit and select height?diameter and stem volume equations for two African mahogany species (Khaya ivorensis and Khaya anthotheca) in the initial development phase (between 2 and 5 years old), established in agroforestry systems in northeastern Brazil. We used linear and nonlinear models to predict the total height (h) and stem volume (v), based on data from forest inventories and stem measurements of standing trees. We tested the following hypotheses: (1) the simple linear model is the most accurate to estimate the total height of young African mahogany trees in relation to different types of height?diameter models (linearized, nonlinear and those with transformed variables); (2) simple and double-entry stem volume models have the same precision in estimating the individual volume of young African mahogany trees. The results showed that the simple linear height?diameter model was most accurate to estimate the height of both African mahogany species. The age?s effect (young trees) and probably the predominantly monopodial development of the Khaya spp. trees sampled were discussed as the causes of the linear nature of the models that best described the height?diameter relationship. The stem volume equations for Khaya ivorensis and Khaya anthotheca were well adjusted. However, the double-entry Spurr?s model was more accurate than the other models for both species. Furthermore, for the Khaya ivorensis, the one-entry (diameter) Husch?s model generated similar stem volume estimates to Spurr?s model MenosThe aim of this study was to fit and select height?diameter and stem volume equations for two African mahogany species (Khaya ivorensis and Khaya anthotheca) in the initial development phase (between 2 and 5 years old), established in agroforestry systems in northeastern Brazil. We used linear and nonlinear models to predict the total height (h) and stem volume (v), based on data from forest inventories and stem measurements of standing trees. We tested the following hypotheses: (1) the simple linear model is the most accurate to estimate the total height of young African mahogany trees in relation to different types of height?diameter models (linearized, nonlinear and those with transformed variables); (2) simple and double-entry stem volume models have the same precision in estimating the individual volume of young African mahogany trees. The results showed that the simple linear height?diameter model was most accurate to estimate the height of both African mahogany species. The age?s effect (young trees) and probably the predominantly monopodial development of the Khaya spp. trees sampled were discussed as the causes of the linear nature of the models that best described the height?diameter relationship. The stem volume equations for Khaya ivorensis and Khaya anthotheca were well adjusted. However, the double-entry Spurr?s model was more accurate than the other models for both species. Furthermore, for the Khaya ivorensis, the one-entry (diameter) Husch?s model generated ... Mostrar Tudo |
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Palavras-Chave: |
Floresta regional brasileira; Mogno africano. |
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Thesaurus Nal: |
Forest inventory; Khaya anthotheca; Khaya ivorensis; Yields. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02364naa a2200253 a 4500
001 2095687
005 2019-11-19
008 2019 bl uuuu u00u1 u #d
022 $a1573-5095 Online
024 7 $ahttps://doi.org/10.1007/s11056-018-9665-$2DOI
100 1 $aSANTOS, F. M.
245 $aModeling the height-diameter relationship and volume of young African mahoganies established in successional agroforestry systems in northeastern Brazil.$h[electronic resource]
260 $c2019
520 $aThe aim of this study was to fit and select height?diameter and stem volume equations for two African mahogany species (Khaya ivorensis and Khaya anthotheca) in the initial development phase (between 2 and 5 years old), established in agroforestry systems in northeastern Brazil. We used linear and nonlinear models to predict the total height (h) and stem volume (v), based on data from forest inventories and stem measurements of standing trees. We tested the following hypotheses: (1) the simple linear model is the most accurate to estimate the total height of young African mahogany trees in relation to different types of height?diameter models (linearized, nonlinear and those with transformed variables); (2) simple and double-entry stem volume models have the same precision in estimating the individual volume of young African mahogany trees. The results showed that the simple linear height?diameter model was most accurate to estimate the height of both African mahogany species. The age?s effect (young trees) and probably the predominantly monopodial development of the Khaya spp. trees sampled were discussed as the causes of the linear nature of the models that best described the height?diameter relationship. The stem volume equations for Khaya ivorensis and Khaya anthotheca were well adjusted. However, the double-entry Spurr?s model was more accurate than the other models for both species. Furthermore, for the Khaya ivorensis, the one-entry (diameter) Husch?s model generated similar stem volume estimates to Spurr?s model
650 $aForest inventory
650 $aKhaya anthotheca
650 $aKhaya ivorensis
650 $aYields
653 $aFloresta regional brasileira
653 $aMogno africano
700 1 $aTERRA. G.
700 1 $aCHAER, G. M.
700 1 $aMONTE, M. A.
773 $tNew Forests$gv. 50, n. 3, p. 389-407, 2019.
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Embrapa Agrobiologia (CNPAB) |
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| 3. |  | CORRÊA, J. R. V. Algodão. Belém, PA: EMBRAPA-UEPAE de Belém, 1987. 3 p. il. (EMBRAPA-UEPAE de Belém. Recomendações básicas, 2).| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 13. | | ALVES, R. M.; CORREA, J. R. V.; RODRIGUES, M. Melhoramento genético do cupuaçuzeiro (Theobroma grandiflorum) no estado do Pará. In: SEMINÁRIO INTERNACIONAL SOBRE PIMENTA-DO-REINO E CUPUAÇU, 1., 1996, Belém, PA. Resumos. Belém, PA: EMBRAPA-CPATU: JICA, 1996. p. 31. (EMBRAPA-CPATU. Documentos, 88).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 19. | | OLIVEIRA, A. F. F.; CORRÊA, J. R. V.; POLTRONIERI, L. S.; OLIVEIRA, R. P. Influência da época de plantio, da irrigação suplementar e tratos culturais sobre o rendimento do feijoeiro. In: REUNIÃO NACIONAL DE PESQUISA DE FEIJÃO, 3., 1990, Vitória. Resumos... Vitória: EMCAPA, 1990. (EMCAPA. Documentos, 62). Resumo 177.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 86 | |
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