Taper functions to describe the stem profile and total bole volume for Pinus caribaea var. hondurensis in the Triangulo Mineiro
The aim of this study was to evaluate the accuracy of taper functions for estimating diameters along the stem according to diameter classes and total volume. Studied was Pinus caribaea var. hondurensis in the Triangulo Mineiro region, state of Minas Gerais. The database consisted of 200 trees measur...
| Autor principal: | Silva, Fernando da |
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| Outros Autores: | Dalla Corte, Ana Paula Aula, Sanquetta, Carlos Roberto |
| Grau: | Artigo |
| Idioma: | pt_BR |
| Publicado em: |
Scientia Forestalis/Forest Sciences
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/16180 |
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oai:repositorio:1-16180 |
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oai:repositorio:1-16180 Taper functions to describe the stem profile and total bole volume for Pinus caribaea var. hondurensis in the Triangulo Mineiro Equações de afilamento para descrever o volume total do fuste de Pinus caribaea var. hondurensis na região do Triângulo Mineiro Silva, Fernando da Dalla Corte, Ana Paula Aula Sanquetta, Carlos Roberto Best Model Data Sets Diameter Class Diameter Distributions Minas Gerais Pinus Relative Positions Standard Deviation Standard Errors Sum Of Squares Taper Function Estimation Value Engineering Forestry Estimation Forest Management Pinus Caribaea Plantations The aim of this study was to evaluate the accuracy of taper functions for estimating diameters along the stem according to diameter classes and total volume. Studied was Pinus caribaea var. hondurensis in the Triangulo Mineiro region, state of Minas Gerais. The database consisted of 200 trees measured by the method of Hohenadl with ten sections, randomly chosen based on age and diameter distribution. The ages of the plantations ranged from 8 to 18 years. The twelve tested models had their performance assessed by the statistics: Schlaegel index; the standard error of estimate; deviation of diameters in each relative position along the bole; standard deviation of differences of diameters; sum of squares of relative residue and the percentage of the residual of diameters. Based on these statistics, ranking permitted to choose the best model to be used. The model from Hradetzky was the best for the total data set, being indicated for diameter estimates along the stem, the ratio di/dbh and the total volume of Pinus caribaea in the study region. 2020-05-25T20:59:15Z 2020-05-25T20:59:15Z 2011 Artigo https://repositorio.inpa.gov.br/handle/1/16180 pt_BR Volume 91, Pags. 367-376 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Scientia Forestalis/Forest Sciences |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
pt_BR |
| topic |
Best Model Data Sets Diameter Class Diameter Distributions Minas Gerais Pinus Relative Positions Standard Deviation Standard Errors Sum Of Squares Taper Function Estimation Value Engineering Forestry Estimation Forest Management Pinus Caribaea Plantations |
| spellingShingle |
Best Model Data Sets Diameter Class Diameter Distributions Minas Gerais Pinus Relative Positions Standard Deviation Standard Errors Sum Of Squares Taper Function Estimation Value Engineering Forestry Estimation Forest Management Pinus Caribaea Plantations Silva, Fernando da Taper functions to describe the stem profile and total bole volume for Pinus caribaea var. hondurensis in the Triangulo Mineiro |
| topic_facet |
Best Model Data Sets Diameter Class Diameter Distributions Minas Gerais Pinus Relative Positions Standard Deviation Standard Errors Sum Of Squares Taper Function Estimation Value Engineering Forestry Estimation Forest Management Pinus Caribaea Plantations |
| description |
The aim of this study was to evaluate the accuracy of taper functions for estimating diameters along the stem according to diameter classes and total volume. Studied was Pinus caribaea var. hondurensis in the Triangulo Mineiro region, state of Minas Gerais. The database consisted of 200 trees measured by the method of Hohenadl with ten sections, randomly chosen based on age and diameter distribution. The ages of the plantations ranged from 8 to 18 years. The twelve tested models had their performance assessed by the statistics: Schlaegel index; the standard error of estimate; deviation of diameters in each relative position along the bole; standard deviation of differences of diameters; sum of squares of relative residue and the percentage of the residual of diameters. Based on these statistics, ranking permitted to choose the best model to be used. The model from Hradetzky was the best for the total data set, being indicated for diameter estimates along the stem, the ratio di/dbh and the total volume of Pinus caribaea in the study region. |
| format |
Artigo |
| author |
Silva, Fernando da |
| author2 |
Dalla Corte, Ana Paula Aula Sanquetta, Carlos Roberto |
| author2Str |
Dalla Corte, Ana Paula Aula Sanquetta, Carlos Roberto |
| title |
Taper functions to describe the stem profile and total bole volume for Pinus caribaea var. hondurensis in the Triangulo Mineiro |
| title_short |
Taper functions to describe the stem profile and total bole volume for Pinus caribaea var. hondurensis in the Triangulo Mineiro |
| title_full |
Taper functions to describe the stem profile and total bole volume for Pinus caribaea var. hondurensis in the Triangulo Mineiro |
| title_fullStr |
Taper functions to describe the stem profile and total bole volume for Pinus caribaea var. hondurensis in the Triangulo Mineiro |
| title_full_unstemmed |
Taper functions to describe the stem profile and total bole volume for Pinus caribaea var. hondurensis in the Triangulo Mineiro |
| title_sort |
taper functions to describe the stem profile and total bole volume for pinus caribaea var. hondurensis in the triangulo mineiro |
| publisher |
Scientia Forestalis/Forest Sciences |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/16180 |
| _version_ |
1787144890894778368 |
| score |
11.755432 |