African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6691

Full Length Research Paper

Modeling the apparent volume of bamboo culms from Brazilian plantation

Carlos Roberto Sanquetta
  • Carlos Roberto Sanquetta
  • Forest Science Department, Federal University of Parana, 900 LotharioMeissner Avenue, Curitiba, Parana, Brazil.
  • Google Scholar
Mateus Niroh Inoue
  • Mateus Niroh Inoue
  • Forest Science Department, Federal University of Parana, 900 LotharioMeissner Avenue, Curitiba, Parana, Brazil.
  • Google Scholar
Ana Paula Dalla Corte
  • Ana Paula Dalla Corte
  • Forest Science Department, Federal University of Parana, 900 LotharioMeissner Avenue, Curitiba, Parana, Brazil.
  • Google Scholar
Sylvio Pellico Netto
  • Sylvio Pellico Netto
  • Forest Science Department, Federal University of Parana, 900 LotharioMeissner Avenue, Curitiba, Parana, Brazil.
  • Google Scholar
Francelo Mognon
  • Francelo Mognon
  • Forest Science Department, Federal University of Parana, 900 LotharioMeissner Avenue, Curitiba, Parana, Brazil.
  • Google Scholar
Jaime Wojciechowski
  • Jaime Wojciechowski
  • Forest Science Department, Federal University of Parana, 900 LotharioMeissner Avenue, Curitiba, Parana, Brazil.
  • Google Scholar
Aurelio Lourenco Rodrigues
  • Aurelio Lourenco Rodrigues
  • Forest Science Department, Federal University of Parana, 900 LotharioMeissner Avenue, Curitiba, Parana, Brazil.
  • Google Scholar


  •  Received: 25 September 2014
  •  Accepted: 20 August 2015
  •  Published: 15 October 2015

Abstract

Brazil has a great potential for cultivation of bamboo species. However, there is a scarce research on the biometric relationships in such plants, which may represent a limitation for its management and use. This article aims to evaluate six methods for estimating the total apparent volume of two species of the genus Bambusa, namely: B. oldhamii Munro and B. vulgaris Schrad. Ex J.C. Wendl. The models tested to estimate the apparent volume of the culms were: (1) Form factor; (2) Hush simple entry volume model; (3) Schumacher-Hall double entry volume model; (4) 5th order polynomial taper function; (5) Taper function using a polynomial with flexible exponents, and (6) Four options of the Data Mining technique (models 6-9).  We found that the model 5 provided the best fitting for B. oldhamii and model 3 was the most reliable for B. vulgaris.  For both species combined model 5 provided best fitting. Model 4 was also considered satisfactory. We concluded that the model 5 is the most accurate, although models 3 and 4 also generate reliable estimates. The models 3, 4 and 5 may be used by people and companies that cultivate, sell and produce the bamboo species included in this research work.

 

Key words: Accuracy, bamboo, modeling, regression, taper function.