Banca de DEFESA: MARIA KELY ALVES GOMES DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARIA KELY ALVES GOMES DA SILVA
DATE: 01/06/2022
TIME: 14:00
LOCAL: Auditório da Direção da EAJ
TITLE:

Effects of planting planting and genetic material of eucalyptus on the bioenergetic potential of wood implanted in the semi-arid neotropical region of Brazil

KEY WORDS:

energy forest, energy density, forest biomass, bioenergy.

PAGES: 46
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Tecnologia e Utilização de Produtos Florestais
SPECIALTY: Propriedades Fisico-Mecânicas da Madeira
SUMMARY:

The general objective of this work was to answer for the bioenergetic potential of eucalyptus wood at 6 years of age using the analysis of the interaction between volumetric production and wood quality of clones implanted under different conditions of densification, in a semi-arid neotropical region of Brazil. 5 clones were selected in 6 different spacings, totaling 30 treatments. Three sample trees were felled from each treatment and discs were removed from these, in positions 0% (base), 1.30m, 25%, 50%, 75% and 100% (top) of the commercial height. The discs were divided into opposing wedges and sent to determine the basic density and higher, lower and useful calorific value of the wood, in addition to the amount of energy stored per cubic meter (m3) and hectare (ha). The survival rate was estimated from the database from 2013 to 2019 resulting from the monitoring of stands and the technical cutting age using the Curveexpert platform. The technical cutting age, based on the highest annual volumetric production per hectare, was reduced in treatments with dense planting spacing – 3 x 0.25 m, with emphasis on materials A1 and E5 (2.1 years); while the survival rate had a higher growth than the others in the denser profiles over the six years, in which the A1 material reached 0.0% in the 3 x 0.25 m spacing in its last year of follow-up. The results showed a positive correlation between the increase in basic wood density and wide spacing - 425.38 Kg.m-3 to 496.00 Kg.m-3; in this context, with regard to genetic materials, R9 (494.73 Kg.m-3) and G7 (500.97 Kg.m-3) had higher means than the others. Regarding the bioenergetic potential of the treatments at the sixth year, the material E5 in the 3 x 0.5 m profile presented values higher than the others with 832,737 kcal/ha of stored energy.

 

BANKING MEMBERS:
Externo ao Programa - 1300987 - CARLOS ALBERTO PASKOCIMAS
Externo ao Programa - 1678080 - GUALTER GUENTHER COSTA DA SILVA
Externo à Instituição - João Gabriel Missia da Silva
Interna - 1880266 - ROSIMEIRE CAVALCANTE DOS SANTOS