Individual models for diameter and height projection with contribution of competition index in Pinus taeda L. stands

The aim if this work was to assess and propose projection models for diameter at breast height total of individual pine trees the contribution competition indexes in these models. Data obtained from 1056 permanent sampling units non-thinned Pinus taeda L. stands located Telêmaco Borba region, Paraná, Brazil, with ages between 3.4 19.5 years. In order project trees, linear were tested according variable current age, age future, basal area, site index, as well their transformations. Spearman correlation dendrometric stand variables, GH (Glover Hool), LO (Lorimer) ST (Stage) being selected. These assessed independent variables models, whose contributions verified through “F ci ” test on incremental contribution. adjusted coefficient determination, standard error estimate, boxplots residuals. provided precise bias-free projections. statistically contributed test, increasing precision projected values majority tested. major tree modelling Glover Hool (GH) Lorimer (LO), respectively.