Influência do clima no crecimento diamétrico de Nectandra lanceolata Nees & (Mart.) Ex Nees, em um ecótono de floresta estacional semidecidual e ombrófila mista na região sudoeste do Paraná

Abstract

Nectandra lanceolata is a native species that presents different growth exercises, making it possible, through trunk analysis, to investigate growth throughout its life. Studies made from this methodology demonstrating possible relations between the diametric growth and the climatic variables of the region. Thus, it is important to study this behavior in order to know the growth limiting factors for a species. The objective of this work was to evaluate the behavior of yellow cinnamon in relation to the diametric growth, determining the correlation with climatic influences. The study was carried out in a semi-deciduous and mixed rainforest ecotone in Dois Vizinhos -PR, 9 treeswith diameters ranging from 32.12 cm to 43.54 cm were studied. For the analyzes, time series from the years 2011 to 2016 were used. The diametric growth data were correlated with the variable variables using Pearson's linear correlation test. In addition,the increments in diameter were modeled according to the climatic variables that most correlated with it, taking into account the model with the lowest variation coefficient, the highest determination coefficient specified, the highest F value, deviation lower standard and better distribution of waste, adopting a level of probability of error of 5%. The annual periodic increments showed similar behaviors. The relative humidity of the air (UR%) presented the highest correlation in this study. Regarding to separate, the smaller to separate, the smaller the width of the rings. The radiation has a positive correlation with the species. The model selected for √IP = b0+b1*URmin3+b2*URm2+b3 *1/URmax with CV% results of 10.84, Syx of 0.1798, Calculated of 76.7 and R²aj of 0.8377. A variable that stood out the most in modeling relative humidity. Through modeling we can confirm, as well as in linear correlation, that the variables related to radiation and radiation influence the width of the rings.