Viabilidade econômica de Eucalyptus dunnii Maiden submetido a diferentes sistemas silviculturais para fins energéticos em Piraí do Sul - PR

Abstract

With the growing concern for clean and renewable energy, biomass has emerged from the forest. When it comes to energy purposes the ideal is to produce the forest rotation of 5 to 6 years aimed at timber production with smaller diameters. The changes every decade of wood production methods and their increasing demand, forced a review of practices in forestry. Among these practices we highlight some silvicultural systems most commonly used in business, especially in this work coppice and tall trees. There are several companies adhering forests, among these deserve special attention cooperatives. Thus, it is of great contribution to study the productive and economic factors in relation to activities that are not geared to such cooperatives. Thus, the aim of this study was to perform an analysis of the economic viability of dunnii Maiden Eucalyptus plantations under different silvicultural systems for energy production in the city of Piraí do Sul, PR.O study was conducted in the city of Piraí do Sul, located in the state of Paraná. Ten plots were allocated in each silvicultural system after measured the DAP of all trees that make up the plots, followed by measuring the height of 30% of the trees in each plot, and the other times were estimated by hypsometric relationships that were previously selected and tested, as it was possible to know the stand volume and associate with costs. The economic analysis of the study showed that the high forest and coppice system is viable when you delete or not the cost of land for price of standing timber or stacked. The coppice showed the best economic viability parameters when compared to the tall trees, and thereby the silvicultural system suitable for forest stands in the study area.