Biomassa comercial e viabilidade econômica da cultura de Ilex paraguariensis A. St.-Hil. (Aquifoliaceae) de uma reserva legal em Guarapuava - PR

Abstract

The production of non- timber products in a legal reserve can cause positive impacts in the rural worker finances, serving as incentive for the environmental conservation. This research had as objective determinate the commercial biomass (Branches and leaves) of Ilex paraguariensis, native originating of natarual regeneration of two plots of Legal Reserve of a huge rural property and adjust mathematical models aiming the motivation of future management practicies and evaluate applicability of the exploration and of the densification of the specie. For this were installed two 100mx100m units where the Ilex paraguariensis individuals with diameter and chest height bigger or equal 5cm were identified and recording the total height of species and the leaf biomass. For the estimatives of comercial biomass the procedure was Stepwise Forward analysis of multiple variables. After the equational adjustments was made the simple regression analysis of two equations (one of each plot). aiming improve the evaluation standards. Two equations were found that can estimate the commercial biomass through easy-to-measure variables analyzed. Yet, other objetcive was to evaluate the exploration applicability and specimen’s densification through the net present value and internal return rate calculation, it was found that the native erva-mate exploration had no viability. However, the culture densification in the natural reserve can be financially viable over the years.