DENDROCHRONOLOGY, INCREMENT AND FOREST MANAGEMENT IN ARAUCARIA FOREST, SANTA CATARINA STATE/DENDROCRONOLOGIA, INCREMENTO E MANEJO FLORESTAL EM FLORESTA DE ARAUCARIA-SC

• Published in: Ciência florestal 2018-10, Vol.28 (4), p.1568
• Main Authors: Hess, Andre Felipe, Ricken, Pollyni, Ciarnoschi, Lucas Dalmolin
• Format: Article
• Language: Portuguese
• ISSN: 1980-5098; 1980-5098
• DOI: 10.5902/1980509835104

Sustainable management is of extreme importance for future preservation, multiple use, profitable production and enhancement of Araucaria Forest in southern Brazil. Thus, with the width measures of the increment rings, it is possible to adjust the growth of species over time, to obtain the cutting cycle, plan the production and manage the species. The objectives of this study were to study the increase in diameter to Araucaria, model the growth on the size and correlate the increase in competition indices to promote the sustainable management of the species. Therefore, the forest was inventoried using systematic sampling process, with 25 plots of 400[m.sup.2] and collected the dendrometric information, morphometric and increase with use of dendrochronology of 121 trees distributed in three diameter classes. The species showed diameter increment variable with age and negative correlation with the competition indices. The temporal structure in diameter based on the dynamics of its annual average increment showed an increase of 74.42% in the number of individuals in commercial classes for a period of 25 years. The species showed an average increment in diameter of 0.708 cm.[ano.sup.-1] and a viable cut rate of 36.59 [m.sup.3].[ha.sup.-1] for one cycle between cuts of 25 years. Keywords: growth rings; forest management; diametric structure. O manejo sustentavel e de extrema importancia para a preservacao futura, uso multiplo, producao rentavel e valorizacao da Floresta com Araucaria no sul do Brasil. Assim, com as medidas da largura dos aneis de incremento e possivel ajustar o crescimento da especie no tempo, para obtencao do ciclo de corte, ordenamento da producao e manejo da floresta. Os objetivos desse trabalho foram os de estudar o incremento em diametro para araucaria, modelar o crescimento em funcao da dimensao e correlacionar o incremento com indices de competicao para promover o manejo sustentavel da especie. Para tanto, a floresta foi inventariada utilizando processo de amostragem sistematico, com 25 parcelas de 400 [m.sup.2] e coletadas as informacoes dendrometricas, morfometricas e do incremento com uso da dendrocronologia de 121 arvores distribuidas em tres classes de diametro. A especie demonstrou incremento diametrico variavel com a idade e correlacao negativa com os indices de competicao. A estrutura temporal em diametro com base na dinamica do seu incremento medio anual mostrou um aumento de 74,42% no numero de individuos nas classes comerciais