DIAMETER DISTRIBUTION OF Araucaria angustifolia (Bert.) O. Ktze. IN A FRAGMENT OF MIXED OMBROPHYLOUS FOREST

Authors

  • Sebastião do Amaral MACHADO Universidade Federal do Paraná, Curitiba (PR)
  • Alan Lessa Derci AUGUSTYNCZIK Universidade Federal do Paraná, Curitiba (PR)
  • Rodrigo Geroni Mendes NASCIMENTO Universidade Federal do Paraná, Curitiba (PR)
  • Marco Aurélio FIGURA Universidade Federal do Paraná, Curitiba (PR)
  • Luís César Rodrigues da SILVA Universidade Federal do Paraná, Curitiba (PR)
  • Eder Pereira MIGUEL Universidade Federal do Paraná, Curitiba (PR)
  • Saulo Jorge TÉO Universidade Federal do Paraná

DOI:

https://doi.org/10.5380/rsa.v10i2.13575

Keywords:

Pinheiro do Paraná, Distribuições Probabilísticas, Teste de Aderência, Paraná Pine, Probabilistic Distributions, Adherence Test

Abstract

The objective of the present research was to evaluate the behavior of probabilistic density functions for fitting of Araucaria angustifolia diameter distribution taking in account 3 different class intervals. The data used for fitting the functions came from a complete enumeration forest inventory of a Mixed Ombrophylous Forest fragment with 15.24 ha, located at the Campus III of the Federal University of Paraná. The diameters of 341 araucárias trees were measured at 1.3 m (DBH). The following probabilistic density functions were fitted: Normal, Log-Normal, Gamma, Beta, Weibull 3P, Weibull 2P and Sb of Johnson. The diameter class intervals of 2 cm, 5 cm and 6.55 cm were tested. The results of the Kolmogorov-Smirnov test indicated that the most efficient function for class intervals with amplitude of 6.55 cm and 2 cm was the Normal and for amplitudes of 5 cm the Sb function was the best one. The Weibull 2P function was rejected by the Kolmogorov-Smirnov adherence test for all diameter class intervals adopted. This research also indicated that the Araucaria angustifolia diameter distribution is symmetric and platicurtic.

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Published

2009-03-09

How to Cite

MACHADO, S. do A., AUGUSTYNCZIK, A. L. D., NASCIMENTO, R. G. M., FIGURA, M. A., da SILVA, L. C. R., MIGUEL, E. P., & TÉO, S. J. (2009). DIAMETER DISTRIBUTION OF Araucaria angustifolia (Bert.) O. Ktze. IN A FRAGMENT OF MIXED OMBROPHYLOUS FOREST. Scientia Agraria, 10(2), 103–110. https://doi.org/10.5380/rsa.v10i2.13575

Issue

Vol. 10 No. 2 (2009)

Section

Crop Science

License

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