EVOLUÇÃO DO SORTIMENTO EM POVOAMENTOS DE Pinus taeda NOS ESTADOS DO PARANÁ E SANTA CATARINA.

Valerio Kohler, Sintia; Soares Koehler, Henrique; Figueiredo Filho, Afonso; Arce, Julio Eduardo; do Amaral Machado, Sebastião

Evolution of assortment of Pinus taeda stands located at Paraná and Santa Catarina States. The dynamic evolution of assortment of Pinus taeda stands was studied using data from complete stem analysis in stands established at Paraná and Santa Catarina states, sampling 126 and 120 trees respectively. The integer and fractional power equation was fitted to the data set stratified by age classes. With FlorExel ® program volumes assortments by the different ages of stands were estimated. The average tree total volume was 1,157 m³, at age of 18 years in Paraná state and 0,959 m³ at Santa Catarina State. Wood for cellulose had higher representation in the class of 7 to 9 years, with 50% of the volume. Volumes for sawmill type 1 were estimated in plantations from 7 years, and for sawmill type 2 from 8 and 9 years old, respectively, representing 70% of the total volume (sawmill type 1 + sawmill type 2) at 10 to 12 years of age. Tree volumes for veneer were obtained from 13 years of age on, in both stands, arriving to present more than 30% of the total volume from the age 19 years. It was observed a fast change in the "noble" assortment after the age of 13 years.

Floresta, 2015, Vol 45, Issue 3, p545

0015-3826

Academic Journal

10.5380/rf.v45i3.35746