Construção de curvas de índice de sítio e determinação do volume populacional para Eucalyptus grandis W. Hill ex Maiden no sudoeste do Paraná

Abstract

The present study aims the construction of site index curves, determining Eucalyptus grandis W. Hill ex Maiden local productive capacity in Parana's southwest region. Specifically, it sought to define the mathematical model to estimate dominant heights, determine the form factor with and without bark and population volume. A study of growth and production was realized in a 13-year chopped population of that specie in the municipality of Quedas do Iguaçu, PR. Rigorous Smalian tree scaling was used in 9 down trees, classing it by diametric categories, opting for trees belonging to classes: intermediary and superior, calculating the respective real volume with and without bark, form factor with and without bark and the bark percentage. In order to estimate dominant heights, data from continuous inventory adjusted by Prodan model were used. The described model allowed the construction of eight monomorphic curves to the site index, which 34 is the lowest and 48 the highest with a reference age of 12 years. Average heights and diameter to the population were adjusted. Beyond tree scaling and site index curves, charts of volume were set up to the ages of 4, 6, 8, 10, 12 and 14 years, estimating population volume with and without bark based on obtained average form factor.