Banca de QUALIFICAÇÃO: JÉSSICA LAMONNIELLY PEIXOTO EPIFÂNIO
Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.STUDENT : JÉSSICA LAMONNIELLY PEIXOTO EPIFÂNIO
DATE: 29/10/2021
TIME: 08:00
LOCAL: GOOGLE MEET EVENTO FORMATO VIRTUAL
TITLE:
VOLUMETRIC AND ENERGY PRODUCTIONS OF WOOD AND RECOVERY TIME AFTER CUTTING AS A PARAMETER FOR DEFINING ROTATION IN THE CAATINGA AREAKEY WORDS:
Exploration. Biomass. Wood quality. Production modeling.
PAGES: 20
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Tecnologia e Utilização de Produtos Florestais
SUMMARY:
The objective of the research was to evaluate the relationship between wood production, energy stored in wood and the ideal rotation cycle, using information from stands at different regeneration ages on the same property. For this purpose, a rural property that sells wood under sustainable forest management in the state of RN was selected. Based on data from the forest management plan for the area, four stands were selected, with post-harvest ages of 16, 13, 11 and 9 years. In each one, 10 experimental plots with 400m2 were remeasured having as reference the georeferenced data by Carvalho (2018). In each plot, the forest inventory was carried out, the measurement of the total height, circumference at breast height (CAP) and circumference at the base (CNB) of the stems of the individuals of the stands (CAP > 6 cm), as well as the identification of forest species and, later, the characterization of the phytosociological structure, as well as the determination of the wood volumetric production. The amount of energy stored by the average production of the plots was extrapolated to one hectare. The basis for the calculation was the individual volume, multiplied by the respective values of basic wood density and higher calorific value of the most representative species. The relationships between the post-cut time and the volumetric and energy production of the wood were also determined, as well as the prospect of the rotation cycle recommended for the area under study. Data were evaluated according to a stratified casual forest inventory, at 90% probability. Representative species were those that added more than 80% of the IVI (Importance Value Index): Cenostigma sp, Piptadenia stipulacea, Mimosa tenuiflora, Croton sonderianus, Aspidosperma pyrifolium, Andira anthelmia, Combretum leprosum, Mimosa caesalpiniaefolia and Jatropha. As a function of age, the number of species in each stand increased when compared to data from Carvalho (2020). Wood production per hectare ranged from 7.83 to 1.06 m3 and wood volume ranged from 32.0 to 2.40 m³.ha-1. The amount of energy stored in field 1 was 98,190.0 Mkcal.ha-1, for field 8 it was 41,526.6 Mkcal.ha-1, for field 11/12 it was 14,448.4 Mkcal.ha-1 and for plot 6 it was 7,281.9 Mkcal.ha-1 with post-harvest ages of 16, 13, 11 and 9 years, respectively, receiving greater energetic collaboration from Cenostigma sp, Mimosa tenuiflora and Piptadenia stipulacea. The technical cutting age was 16 years.
BANKING MEMBERS:
Presidente - 1880266 - ROSIMEIRE CAVALCANTE DOS SANTOS
Externo ao Programa - 1678080 - GUALTER GUENTHER COSTA DA SILVA
Externo à Instituição - ELISA ROSÁRIO GOMES MARINHO DE ALBUQUERQUE
Externo à Instituição - RENATO VINÍCIUS OLIVEIRA CASTRO - UFSJ