Banca de QUALIFICAÇÃO: BRUNO FERNANDES VERAS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : BRUNO FERNANDES VERAS
DATE: 15/12/2023
TIME: 14:30
LOCAL: Auditório do ICA
TITLE:

Adjustment of tapering functions to determine the comercial volume os paricá planting (Schizolobium parahyba var. amazonicum) and assortiment in livestock and forestry integration system in the municipality Abel Figueiredo-
Pará.

KEY WORDS:

Forest inventory. Regression models. Production forests.

PAGES: 37
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUMMARY:

The Paricá (Schizolobium parahyba var. amazonicum), is a fast-growing
species that adapts to different types of crops. The characteristics of its wood
allow it to be used for a variety of purposes, with emphasis on the panel and
laminate industry. Among the management activities, the forest inventory,
through data collection, makes it possible to estimate the commercial volume,
which is the variable of greatest interest to the producer. As a way of
maximizing and diversifying production and meeting the demand for
multiproducts in the national and international market, the use of trunk tapering
equations to determine timber multiproducts of the desired forest species has
intensified. Therefore, the objective of this research is to adjust and compare
taper functions to determine the volume of Paricá (Schizolobium parahyba var.
amazonicum) planting and assortment in a Livestock and Forestry Integration
system. The study area was on a farm, located in the municipality of Abel
Figueiredo, in the State of Pará. The Paricá plantation was distributed over 50
hectares, characterized as a Livestock and Forest Integration cultivation
system. A part of the forest was established in January 2019, with a spacing of
3.5 x 3.5 m. Another part was implemented in February 2020, with a spacing of
4 x 2 m between the trees. The forest inventory was carried out in 53 plots of
500 m² in a circular format. The DBH of all trees and the total height of two trees
in each plot were measured. Tree cubing was carried out non-destructively
using the Criterion RD 1000 optical dendrometer, with 108 individuals being
sampled. With the data collected, three regression models were adjusted to
estimate each of the following variables: total tree height, individual and forest
volume, and taper to determine the volume of timber multiproducts. To choose
the best model, the following criteria were used: Adjusted coefficient of
determination; Standard error of the estimate in percentage; Akaike Information
Criterion; Bayesian information criterion; in addition to the graphical distribution
of residues. 50% of the data were adjusted and 50% for validation. The study of
the diameter distribution of the forest was also carried out with an adjustment of
the Weibull equation. As partial results, the Stoffels and Soest models were
selected for hypsometric adjustment, Spurr logarithmized volumetric
adjustment, and Max and Burkhart for tapering adjustment. At the end of the

work, it is expected that it will be possible to estimate the total volume of the
forest as well as the commercial volume of the selected assortments.

BANKING MEMBERS:
Interna - 613.866.002-10 - FRANCIMARY DA SILVA CARNEIRO - UFRA
Externa à Instituição - MICHELLINY PINHEIRO DE MATOS BENTES - EMBRAPA
Presidente - 2411802 - RODRIGO GERONI MENDES NASCIMENTO
Externo ao Programa - 1551175 - RODRIGO SILVA DO VALE
Interno - 1358527 - WALMER BRUNO ROCHA MARTINS