Banca de DEFESA: LEANDRO NASCIMENTO SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LEANDRO NASCIMENTO SANTOS
DATE: 27/02/2025
TIME: 14:00
LOCAL: Sala virtual do google meet (meet.google.com/eiz-vbpo-ixv)
TITLE:

ABOVEGROUND BIOMASS QUANTIFICATION AND CARBON STOCK OF AN EXPERIMENTAL Tachigali vulgaris PLANTATION IN THE AMAZON

KEY WORDS:

Amazon, forest plantations, Tachi-branco, fertilizers, biomass production, carbon stock.

PAGES: 64
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Tecnologia e Utilização de Produtos Florestais
SUMMARY:

Planted forests are essential for mitigating climate change by promoting the sustainable use of woody biomass for energy generation and acting as carbon sinks, in addition to alleviating pressure on native forests. In Brazil, planted forests are mainly composed of species from the genus Eucalyptus. However, in regions with specific edaphoclimatic characteristics, such as the northern part of the country, these forests face challenges in meeting demand. Therefore, there is a growing need to diversify the species used in forest plantations to meet this demand and benefit various local and regional sectors. In this context, Tachigali vulgaris, a native species of the Amazon, stands out for its productivity due to its rapid growth and technological, ecological, and silvicultural characteristics, making it attractive for homogeneous plantations, as well as its adaptation to the region’s environmental conditions. Thus, expanding knowledge about this species and silvicultural practices will be essential to support future plantations. This study aimed to quantify the biomass and carbon stock of an experimental T. vulgaris plantation conducted in a 1.44-hectare area in the municipality of Igarapé-Açu, Pará, Brazil. The experiment was established in 2016 in a randomized design with four blocks, using a factorial scheme considering three levels of phosphorus (P₂O₅) (0; 65.22; 130.43 kg ha⁻¹), nitrogen (N) (0; 88.89; 177.78 kg ha⁻¹), and potassium (K₂O) (0; 100; 200 kg ha⁻¹), totaling 27 treatments, with treatment 1 serving as the control, where all three nutrient levels were null. Forty trees were measured using the Hohenadl method at 93 months of age, selected based on diameter distribution. The diameter at breast height (DBH), total height (m), and total volume (m³) were assessed. Additionally, cross-sectional trunk samples were collected at different heights to determine basic wood density and subsequently estimate biomass and carbon stock. At 93 months of age, the trees had bark-free volumes ranging from 0.0138 to 0.4651 m³, with an average annual increment (AAI) of 28.4 m³ ha⁻¹ year⁻¹ without bark and 31.3 m³ ha⁻¹ year⁻¹ with bark. Observed basic densities ranged from 0.358 to 0.584 g cm⁻³. Dry biomass and carbon stock values ranged from 559.03 to 67,106.27 kg ha⁻¹ (equivalent to 0.56 to 67.11 Mg ha⁻¹) and from 278.40 to 33,418.92 kg ha⁻¹ (equivalent to 0.28 to 33.42 Mg ha⁻¹), respectively. These data provide a foundation for future research on Tachigali vulgaris, with significant implications for sustainable management, carbon offsetting, and the restoration of degraded areas in the Amazon.

COMMITTEE MEMBERS:
Presidente - 1134991 - THIAGO DE PAULA PROTASIO
Externo à Instituição - SAMUEL JOSÉ SILVA SOARES DA ROCHA - UFLA
Externo à Instituição - ALVARO AUGUSTO VIEIRA SOARES - UFU
Externo à Instituição - PEDRO HENRIQUE OLIVEIRA SIMOES - UFMT