Fator de forma e afilamento para povoamentos não desbastados de Pinus caribaea var. caribaea na região centro-sul de Mato Grosso

Abstract

The aim of this research consisted adjust a model of factor of form and model of afilamento caribaea Pinus to var. caribaea Barr. et Golf. for the region Center-South of Mato Grosso. The population located in the city of Nova Marilândia possesses area of 215,47ha, and around is occupied for agricultural activities. The implantation was performed with seedlings of seminal origin, the population did not receive any silvicultural treatment and the data were collected in 2014, when the population had 36 years. The description of the population occurred through a random inventory, aiming at to represent the population all. Subsequently the sociological classification of the population was carried in accordance with the methodology of Hozokawa and Souza. The collected data are proceeding from 90 trees, deriving of all the sociological classes. For the adjustment of the form factor 10 models were tested and for the adjustment of the tapering, the models of Kozak, Polynomial of Powers Fracionárias and Hradetzky, were tested. Moreover, the volumes obtained through the factor of form and the integral of the tapper function were compared with the volume obtained through the rigorous cubage. Amongst the models of form factor evaluated, what better it adjusted to the data was a logarithmic model; the model of Hradetzky presented adjustment to the tapering better and calculated the total volume more precisely. The comparison of the estimated volumes and the calculated one, to the level of 5% (α = 0,05) for the test of Tukey was not verified statistically significant difference.