Age and Growth Rhythm of Tree Species Natural From Pantanal Matogrossense, MS

Abstract

The information on the influence of environmental factors upon growth rate of trees is very important for the development of forestry management programs. The aim of this work was to determine the age and  radial increments of the trees. Samples were collected, in July 1996, in Nhumirim Farm, Embrapa Pantanal, located in Nhecolândia sub-region, Pantanal, Corumbá - Mato Grosso do Sul. The disks from 19 trees species were collected in areas with Arboreous Savanna, Forested Savana and Semi-deciduous Dry Forest. The  trees were selected by good canopy formation. Traversal section samples of the stem were collected of each tree at 0.3 m height, to determinate age and  increment of the first five years of the trees, and at  1,30m height, to evaluate the growth rhythm. The  growth rings were counted and measured on eight radii  of each disk. The average annual radial increment presented wide results, varying from 0,21 to 0,94cm, in  trees of 10 to 31 years old.