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Efect of crown length on the hypsometric relationship of Araucaria angustifolia PFB - Pesquisa Florestal Brasileira
Machado, Sebastião do Amaral; Accioly, Yuri; Nascimento, Rodrigo Geroni Mendes; da Silva, Luís César Rodrigues; Cardozo, Claudia Carla.
This study aimed to test the hypothesis that crown length affects the hypsometric relationship. We used data from diameter measured at 1.3 m above ground level (DBH) and total heights of 337 trees of Araucaria angustifolia (Bertol.) O. Kuntze from an urban remnant of Araucaria Forest with 15.24 ha, located in Curitiba, PR, Brazil. These trees were grouped into classes of crown length. Six hypsometric models were adjusted to the data for each class and for the entire data set. The best model was chosen based on the standard error of estimate in percentage, index of Schlaegel, and graphical analysis of residuals. The ranking indicated Trorey as the best model. The models identity test of Graybill applied to the Trorey model indicated that crown length...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Height curves; Araucaria Forest; Models identity Recursos Florestais; Engenharia Florestal Curvas de altura; Floresta Ombrófila Mista; Identidade de modelos.
Ano: 2015 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/493
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USING DIAMETER VARIATION INDEX OF PIONEER SPECIES FOR CLASSIFICATION AND MODELING TROPICAL FOREST YIELD BIOFIX
Nascimento, Rodrigo Geroni Mendes; Machado, Sebastião do Amaral; Figueiredo Filho, Afonso; Higuchi, Niro.
This study sought to classify the productivity of a representative area of tropical forest, as well as to analyze the relationship between the structural variability of pioneer species and the yield of three management regimes. The study area is located at the Tropical Forestry Experimental Station belonging to INPA (National Institute for Amazon Research), approximately 90 km from downtown Manaus, in the State of Amazonas, Brazil. Data were collected from twelve 1 ha sample plots. Diameter was measured annually for all individuals with DBH  10 cm between the years 1990 and 2008. Pioneer species served as the basis for calculating the Diameter Variability Index VI% over time. Three classes of variability were established according to the guide curve...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon Rainforest; Ecological groups; Yield models; Site classification; Growth analysis.
Ano: 2016 URL: http://revistas.ufpr.br/biofix/article/view/49102
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