Biomassa e volumetria de híbridos de eucalyptus urograndis em sistema de integração lavoura-pecuáriafloresta (ilpf) na região sul de Goiás
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2015-05-29
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Universidade Federal de Goiás
Resumo
This study, carried out in a six years stand of Eucalyptus x urograndis old located in Cachoeira
Dourada - GO, in an area with soil predominantly Rhodic clayey with a crop-livestock-forest
integration system that develops an important role in recovering degraded areas through a
sustainable yield model. The objectives were to quantify the compartmentalized tree aboveground
biomass; dendrometrically characterize the tree component of the system; Evaluate and test
volumetric models for biomass of Eucalyptus urograndis trees. The spacing model adopted in the
tree component of crop-livestock-forest integration system (IAFP) of this work, we chose to use
three lines densely populated distancing three meters between them, and two meters between plants
with fourteen meters between the rows, aiming to the integrated system for production of wood for
energy (for six years) sawmill (fourteen) from eucalyptus. Above ground biomass was determined
by fitting regression equations with collection of ten individuals classified and divided into
dendrometric classes e and compartmentalized by cubed by Smalian method. It was related
diameter at breast height (DBH) with height of each plant to determine the hypsometric relations
Eucalyptus x urograndis and adjusting the values to seven models as independent variables were
the diameter measured at 1.30 m tall (X1) in centimeters, and the total tree height (X2), in meters.
To check the relationship between variables, there was simple linear regression with 95% statistical
significance, noting the regression coefficient and the distribution of waste and to list the
components of the biomass with the volume of each tree Eucalyptus x urograndis. It was also
performed linear regression with 95% statistical significance for each of biomass component. Total
productivity of eucalyptus biomass obtained from this integrated crop-livestock-forestry system
was 144.35 Mg ha-1, resulting in a productivity 114.25 Mg ha-1 (79.14%) of wood. The estimated
average height was 23.88 m, originated a total volume of 259.93 m3 h-1 and the average volume of
0.378 m³ per tree, a total gain of 0.063 m³ tree-1 y-1, yielding an annual increase of 43.32 m3 ha-1 yr-
1, thus complying with the farmer’s objectives in using wood component for energy production and
sawmill.
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COELHO JÚNIOR, J. M. L. P. Biomassa e volumetria de híbridos de eucalyptus urograndis em sistema de integração lavoura-pecuáriafloresta (ilpf) na região sul de Goiás. 2015. 63 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2015.