Banca de QUALIFICAÇÃO: JULIANA RODRIGUES PAIM

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : JULIANA RODRIGUES PAIM
DATE: 11/12/2025
TIME: 09:30
LOCAL: Instituto de Geociências
TITLE:

Mapping and Analysis of Net CO₂ Equivalent Fluxes: A Socio-environmental Assessment in the Municipality of Rio de Janeiro (RJ)

KEY WORDS:

Greenhouse gas sink area; Climate change; Socio-environmental indicators; Environmental racism; Climate justice.

PAGES: 70
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Geografia Física
SPECIALTY: Climatologia Geográfica
SUMMARY:

Climate change represents one of the greatest contemporary socio-environmental challenges, driven by the increase in atmospheric concentrations of greenhouse gases (GHG). Carbon dioxide equivalent (CO₂e) stands out as a standardizing indicator by aggregating CO₂, CH₄, and N₂O. Thus, this research analyzes the relationship between the spatial distribution of net CO₂e fluxes and socio-environmental and socioeconomic variables in the municipality of Rio de Janeiro (2001-2024), identifying sink areas and source areas and characterizing their socioeconomic conditions, in order to investigate how removal and emission patterns are linked to existing inequalities in the study area. The investigation integrates geospatial data on emissions, removals, and net flow obtained from the Global Forest Watch platform, combined with variables from the IBGE (2022 Census), MapBiomas, and Landsat images, allowing for statistical correlation and spatial dependence analyses using the global and local Moran's I index (LISA), in addition to territorial quantification performed via Spatial Join and ANOVA tests, processed in a GIS environment, with the aim of evaluating inequalities associated with income, population density, and race/color. Preliminary results indicate that, between 2001 and 2024, the largest gross removals are concentrated in the West zone, especially in Guaratiba (33.49 to 84.39 Mg/ha) and Santa Cruz, while the lowest values (0.15 to 6.12 Mg/ha) occur on the tops of the Tijuca, Pedra Branca, and Mendanha massifs; Gross emissions are sporadic, registering values between 4.30 and 1,966.58 Mg/ha, particularly in Campo Grande and the edges of the Pedra Branca Massif. Net flux confirms the main sinks in the West zone: Guaratiba (values up to -84.39 Mg/ha) and Santa Cruz, in addition to the edges of the massifs, which present values between -35.16 and -6.33 Mg/ha. In the more urbanized regions of the North and Central zones, areas without data or isolated emission points prevail. In general, the main sinks are concentrated in areas with high vegetation density, while the highest emissions are located in regions of urban expansion and vegetation suppression. It is expected that, as we advance to the final stages, spatial and statistical analyses will deepen the understanding of the links between carbon fluxes and socioeconomic indicators, allowing the revelation of spatial patterns of environmental inequality. The aim is that identifying significant correlations between emissions, removals, and variables such as income, population density, and race/color will help to highlight possible configurations of environmental racism and climate injustice in the municipality.

COMMITTEE MEMBERS:
Presidente - 1452626 - ANDREWS JOSE DE LUCENA
Interno - 1766120 - GUSTAVO MOTA DE SOUSA
Externa à Instituição - LIZ BARRETO COELHO BELÉM - UFRJ
Externo à Instituição - Max Wendell Batista dos Anjos - UFJF