Estudo do crescimento em altura dominante de Pinus caribaea var. hondurensis (Sénécl.) W. H. Barrett & Golfari em povoamentos experimentais na Região Amazônica após 50 anos de plantio

Abstract

This study aimed to determine the productive potential of Pinus caribaea var. hénurensis (Sénécl.) W. H. Barrett & Golfari in the northern region of Brazil, assessing its growth in dominant height in two stands in the Amazon, Western Pará. The data used were derived from full stem analysis sampling from a sample of eight dominant trees of experimental plantations located in the Reserve. Palhão Forestry (RP) and Curuá-Una Experimental Station (EECU), aged 59 and 50 years, respectively. The total heights of the sample trees were reconstituted by the TARG - Tree Annual Radial Growth method. To compare dominant height production in the planting area, the nonlinear Logistic and Chapman-Richards growth models were adjusted. The best growth model was selected by comparing percentage standard error (Syx%), adjusted determination coefficient (R²aj), Akaike information criterion (AIC), Bayesian information criterion (BIC), and graphical analysis of the yield curves. growth. According to the analyzes, the Chapman-Richards model was indicated as the most efficient in the production curve modeling for the evaluated plantings. It was found that the planting of EECU presented larger average increases in dominant height and DAP compared to the planting of RP, and maximum IMA for these parameters at younger ages, standing out as the best site for species, matching growth with other species. regions. Therefore, it is concluded that the North of Brazil has acceptable production capacity for homogeneous stands of P. caribaea var hondurensis on a commercial scale.