Consulta: creatorFacets:"Costa, Emanuel Arnoni"
Registros recuperados: 2
Data/hora: 26/07/2024 22:51:55

Basal area increment model of araucaria trees in uneven aged forest
Provedor de dados: PFB - Pesquisa Florestal Brasileira
Autores: Costa, Emanuel Arnoni; Finger, César Augusto Guimarães; Hess, André Felipe.
The present study aimed to develop a mathematical model to describe annual periodic percentage increment in basal area of Araucaria angustifolia trees with data collected from increment cores extracted radially from the trunk at breast height of 109 trees distributed in a large diameter range. Dendrometric and morphometric attributes were tested by multiple linear regressions as independent variables and their interactions with dummy variables as descriptors of social position class. The model explains 80% of total variation of the periodic annual percentage increment in basal area with formal crown and height/diameter relationship for trees of all social positions, as well as length and crown proportion of dominant trees described by the dummy variable....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucaria angustifolia; Sociological position; Morphometric relations Manejo Florestal; Biometria Florestal; Silvicultura Araucaria angustifolia; Posição sociológica; Relações morfométricas.
Ano: 2015
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/792

Modeling natural regeneration biomass of Pinus stand
Provedor de dados: PFB - Pesquisa Florestal Brasileira
Autores: Cubas, Rafael; Costa, Emanuel Arnoni; Guimarães Finger, César Augusto; Maydanchen, Viviane Zaniz.
Reliable biomass data are very important in the evaluation of ecosystems, and help in understanding the contribution of forests in climate change. Variables that describe the size of the tree, like diameter and height are directly associated with biomass, which allows the use of regression models to estimate this element. Therefore, this study aimed to estimate by regression models, the biomass of different compartments of natural regeneration of trees of a Pinus taeda L. stand. The data were obtained through direct destructive method, using 100 randomly selected trees in the understory of a stand of Pinus taeda. We analyzed three arithmetical models, three logarithmic and two models developed by Stepwise process. Logarithmic equations developed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weight; Crown; Pinus taeda Recursos florestais; Engenharia Florestal Peso; Copa; Pinus taeda.
Ano: 2016
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1091