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| Andrade, Valdir Carlos Lima de; Kroetz, Elaine Aparecida; Nicola, Andrei; Souza, Priscila Bezerra de; Nohama, Fabiano Kenji; Leite, Helio Garcia; Binoti, Daniel Henrique Breda; BinotiI, Mayra Luiza Marques da Silva. |
| This study aimed at evaluating the application of linear hypsometric equations in savanna located in the state of Tocantins, Brazil. Data were obtained in 46 plots of 1,000 m² each, and 13 plots were used to simulate six different systems of data sampling to fit hypsometric models. The remaining 33 plots were reserved for an application test of generated hypsometric equations. In this assessment, to decide the sampling system and model, in addition to the residual graphic analysis, the following statistic criteria were adopted: residual standard error and multiple linear correlation. After this decision, a model identity test was applied to determine the best way to prepare the database aiming at the hypsometric models adjustment. We concluded that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Savanna tocantinense; Hypsometric models; Models identity Recursos Florestais; Engenharia Florestal; Biometria Florestal Cerrado tocantinense; Modelos hipsométricos; Identidade de modelos. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/683 |
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| 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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