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| Pelissari, Allan Libanio; Lanssanova, Luciano Rodrigo; Drescher, Ronaldo. |
| This study aimed to adjust volumetric models to tropical pines, in pure stand, in the municipality of Vilhena, Rondonia State. The data came from 20 felled trees of Pinus caribaea var. hondurensis and 10 Pinus tecunumanii trees with discs collected at fixed positions of 0.20 m, 0.70 m, 1.30 m and in distances of one meter along the stem, for later counting and measurement of the growth rings at ages from 4 to 12 years. Eight volumetric models were adjusted. The selection criteria used were: standard error of estimate, adjusted coefficient of determination, F test, significance of regression coefficients, mean deviation, standard deviation of the differences, sum of square of the relative residual, percentage of the residuals and graphic analysis of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Volume; Volumetric equations; Stem analysis Volume; Equações volumétricas; Análise de tronco. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/270 |
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| Abrantes, Karen Keli Barbosa; Paiva, Luísa Melville; Almeida, Roberto Giolo de; Urbano, Edilson; Ferreira, André Dominghetti; Mazucheli, Josmar. |
| The aim of this study was to model the individual height and volume of eucalyptus wood in two integrated crop-livestock-forest systems (ICLF1 and ICLF2) in Campo Grande, a city in the state of Mato Grosso do Sul, Brazil. Classic nonlinear growth models were adjusted for height (Logistic, Gompertz, Richards, Weibull, Van Bertalanffy, Brody, Mitscherlich, and Chapman and Richards) and volume (Shumacher-hall nonlinear, Takata, Honner, Logistic, Gompertz, and Weibull) in two structural arrangements: ICLF1, with a spacing of 14 x 2 m and density of 357 trees ha-1, and ICLF2, with a spacing of 22 x 2 m and density of 227 trees ha-1. Diameter at Breast Height (DBH) measurements were performed in 100% of trees, with measurements of the total height of some... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nonlinear growth models; Volumetric equations; Hypsometric equations; Agroforestry systems.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42626 |
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| Abrantes, Karen Keli Barbosa; Paiva, Luísa Melville; Almeida, Roberto Giolo de; Urbano, Edilson; Ferreira, André Dominghetti; Mazucheli, Josmar. |
| The aim of this study was to model the individual height and volume of eucalyptus wood in two integrated crop-livestock-forest systems (ICLF1 and ICLF2) in Campo Grande, a city in the state of Mato Grosso do Sul, Brazil. Classic nonlinear growth models were adjusted for height (Logistic, Gompertz, Richards, Weibull, Van Bertalanffy, Brody, Mitscherlich, and Chapman and Richards) and volume (Shumacher-hall nonlinear, Takata, Honner, Logistic, Gompertz, and Weibull) in two structural arrangements: ICLF1, with a spacing of 14 x 2 m and density of 357 trees ha-1, and ICLF2, with a spacing of 22 x 2 m and density of 227 trees ha-1. Diameter at Breast Height (DBH) measurements were performed in 100% of trees, with measurements of the total height of some... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nonlinear growth models; Volumetric equations; Hypsometric equations; Agroforestry systems.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42626 |
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