Acessibilidade / Reportar erro

Conversion of wood trees in multiple products using integer programming

The objective of this study was to increase the income and safeness of a forestry enterprise by converting trees into wood multiproduct using integer programming. The data used in this experiment are related to the planting of a hybrid clone of Eucalyptus grandis x Eucalyptus urophylla, at 7 years of age of a farmer from Minas Gerais, Brazil. To perform the optimized conversion, information from alternative commercialization of the wood produced in the settlement and the characteristics of products were used. Four alternative destinations of the logs were taken into account: energy, cellulose, anchor and sawmill, with different dimensions and the required minimum and maximum diameters and length of logs. The problem consisted in meeting the optimal combination based on two proposed scenarios: a) maximization of the total volume obtained, and b) optimization of the overall revenue obtained. The comparative order was destined to a single forest product with no study of optimization. The comparison of results demonstrates the economic benefits achieved by planting in multiproduct conversion when compared to single use, with an average increase of 33.69% in average revenue achieved by just one product. The maximization of total revenue obtained had an increase of 20.6% and 16.3%compared to revenues obtained by the allocation of settlement anchor and maximization of the volume respectively. Therefore, it is concluded that optimization of the overall revenue proved to be the best choice for income from forest settlement.

Assortment forest; Integer programming; Multiproduct


Sociedade de Investigações Florestais Universidade Federal de Viçosa, CEP: 36570-900 - Viçosa - Minas Gerais - Brazil, Tel: (55 31) 3612-3959 - Viçosa - MG - Brazil
E-mail: rarvore@sif.org.br