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| Curto, Rafaella De Angeli; de Mattos, Patrícia Povoa; Braz, Evaldo Muñoz; Zachow, Randolf; Péllico Netto, Sylvio. |
| The objective of this study was to characterize of an unmanaged stand of Araucaria angustifolia and to development of models to quantify the wood potential, aiming to support the development of forest management plans in stands with similar conditions. The work was developed into a stand established in 1946, in National Forest of Açungui, in Campo Largo County, Paraná State, Brazil. There was only one thinning in the stand, between 1970 and 1980. From the frequency of individuals in each diametric class, it was observed the condition of stagnation and competition with cohort in the beginning of class distribution. With the application of the probability density function of Weibull-3P, Trorey model, and the 5th polynomial by diameter class, it was possible... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forest Management; National Forest; Diameter distribution Engenharia Florestal; Manejo florestal Manejo florestal; Floresta Nacional; Distribuição diamétrica. |
| Ano: 2014 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/764 |
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| Curto, Rafaella De Angeli; Mattos, Patricia Póvoa de; Braz, Evaldo Muñoz; Netto, Sylvio Pellico; Zachow, Randolf. |
| The aim of this work was to evaluate the radial and longitudinal variations of wood specific gravity in an overstocked stand of Araucaria angustifolia, with 65 years. The stand was located in the National Forest of Açungui, Campo Largo, Parana State, Brazil, with thinning recorded between 1970 and 1980, without subsequent thinnings. We selected three trees for each diameter class: 10-30 cm, 30-50 cm and 50-70 cm. To the longitudinal analysis, we collected discs from seven heights (0, 20, 40, 60, 80 and 100% of commercial stem and at 1.3 m). The barks were removed and it was obtained opposite wedges until pith and five samples were taken in radial direction from each disk. In general, there was an increase of wood specific gravity in radial direction. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality of wood; Radial and longitudinal variations; Competition Engenharia florestal; Tecnologia da madeira Qualidade da madeira; Variações radial e longitudinal; Competição. |
| Ano: 2016 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/963 |
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| Curto, Rafaella De Angeli; Môra, Rômulo; Araújo, Emanuel José Gomes de; Silva, Gilson Fernandes da. |
| Objetivou-se avaliar o aumento da exatidão na estimativa da altura total de árvores maiores que 15 metros, mediante treinamento, em duas condições de terreno de uma Floresta Estacional Semidecidual (FES). Foram escaladas e medidas a altura de 211 árvores, distribuídas em terreno plano e declivoso, em uma FES, localizada no estado do Espírito Santo. As mesmas árvores tiveram suas alturas estimadas visualmente por dois mensuradores, tendo um recebido treinamento e o outro não, ambos com auxílio de régua retrátil graduada de 15 m apoiada em cada árvore. Foram definidas três classes de altura: 1 (15-17,9 m), 2 (18-20,9 m) e 3 (>21 m), admitindo-se que possa se perder exatidão com o aumento da altura. Foram aplicados testes de médias, teste t pareado, a 95%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Balizamento; Floresta Estacional Semidecidual; Régua retrátil. |
| Ano: 2018 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/17573 |
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