Stacked volume conversion factor for geometric volume of Eucalyptus sp.

Authors

  • André Salgado de Andrade Sandim Programa de pós graduação em Ciências Florestais, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Neves, 2501, Bairro: Terra Firme, CEP: 66.077-830, Belém – PA.
  • Ariadna Coelho Mota Universidade Estadual do Maranhão - UEMA, Avenida Lourenço Vieira da Silva, 1000, Bairro: Jardim São Cristovão, CEP 65055-310, São Luís - MA.
  • Mario Lima dos Santos Programa de pós graduação em Ciências Florestais, Universidade de Brasília – UnB, Campus Universitário Darcy Ribeiro, Asa Norte, CEP 70910-900, Brasília-DF.
  • Welton dos Santos Barros Instituto de Ciências Agrárias, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Neves, 2501, Bairro: Terra Firme, CEP: 66.077- 830, Belém – PA.
  • Beatriz Cordeiro Costa Instituto de Ciências Agrárias, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Neves, 2501, Bairro: Terra Firme, CEP: 66.077- 830, Belém – PA.
  • Vanda Maria Sales de Andrade Instituto de Ciências Agrárias, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Neves, 2501, Bairro: Terra Firme, CEP: 66.077- 830, Belém – PA.

DOI:

https://doi.org/10.18227/1982-8470ragro.v13i0.5312

Keywords:

Volumetry. Cubing factor. Stacking factor. Same age stands.

Abstract

Post-harvest, wood volume can be calculated with a stacking factor which can be influenced by diameter classes involved. Consequently, the following question arises: there is a difference between the volume conversion factor for stacked to geometric volume between piles of clonal plantation logs of different diameters classes? The hypothesis is: if smaller logs have a higher stacked to geometric volume conversion factor, between-log voids will be smaller and the overall stacks will therefore have lower volumes. Therefore, the objective of this study was to compare stacking and cubing factors in stacks of logs with different diameters for two Eucalyptus sp. clones. The study was conducted in Barra do Corda municipality, Maranhão State, Brazil. Timber was laid in piles of logs by diameter class, composed of logs of smaller (9-10.99 cm) and larger (11-13 cm) diameters. Stacking factor means for clone 1 were 1.88 for the larger diameter and 2.00 for the smaller diameter class, while for clone 2 mean values were 1.62 and 1.65, for stacks with larger and smaller diameter classes, respectively. For logs from the same clone there was no significant difference for the conversion factors between the stacks with the largest and smallest diameter. However, there was a significant difference in the conversion factors between the two clones, proving the hypothesis tested. Thus, for each genetic lineage, a proper stacking factor must be established so that the estimated volume comes close to the real value.

Author Biographies

André Salgado de Andrade Sandim, Programa de pós graduação em Ciências Florestais, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Neves, 2501, Bairro: Terra Firme, CEP: 66.077-830, Belém – PA.

Engenheiro Florestal e mestre em Ciências Florestais.

Ariadna Coelho Mota, Universidade Estadual do Maranhão - UEMA, Avenida Lourenço Vieira da Silva, 1000, Bairro: Jardim São Cristovão, CEP 65055-310, São Luís - MA.

Engenheira Florestal

Mario Lima dos Santos, Programa de pós graduação em Ciências Florestais, Universidade de Brasília – UnB, Campus Universitário Darcy Ribeiro, Asa Norte, CEP 70910-900, Brasília-DF.

Engenheiro Florestal, mestre em Ciências Florestais e doutorando em Ciências florestais.

Welton dos Santos Barros, Instituto de Ciências Agrárias, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Neves, 2501, Bairro: Terra Firme, CEP: 66.077- 830, Belém – PA.

Graduando em Engenharia Florestal

Beatriz Cordeiro Costa, Instituto de Ciências Agrárias, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Neves, 2501, Bairro: Terra Firme, CEP: 66.077- 830, Belém – PA.

Graduanda em Engenharia Florestal

Vanda Maria Sales de Andrade, Instituto de Ciências Agrárias, Universidade Federal Rural da Amazônia – UFRA, Avenida Presidente Neves, 2501, Bairro: Terra Firme, CEP: 66.077- 830, Belém – PA.

Meteorologista, Mestre e Doutora em Metereologia Agrícola e Pós-Doutora em Ciências Florestais

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Published

16/05/2019

Issue

Vol. 13 (2019): Edição Continuada

Section

Original Scientific Article

License

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