The decomposition tax and nutrients flux of senescent andphotosintetically active leaves of three species are different because their regulation depends on the f substract and on the forest type but, the leavesdecomposition also depend on lignin and cellulose compounds find in theleaves. The goal of this study was to evaluate nutrients transference fromsenescent to photosintetically active leaves, decomposition and theircontribution on the nutrients cycling. For that, we quantified leavesnutrients transference and evaluated the decomposition velocity ofsenescent leaves, which were submitted for decomposition in differentplaces, in side of nylon mesh bags soil. The decomposition bags wereremoved to experiment periodically, fifteen to fifteen days in first fourmonths, and after they were removed between 25 to 30 days, but neverless or more than 25 or 30, respectively. The completed decomposition ofleaves was verified around 360 days. The following coefficient of regression:0,0048 ± 0,0005, 0,0059 ± 0,0007, 0,0049 ± 0,0005 are of thedecomposition dynamic for Dialium guianensis, Tovomita schomburgkki eBrosimum lactescens, respectively. The nutrients transference evidences werefound in the senescent and photosintetically active leaves, obtained bychemistry analyze of both leaves.
