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CARBON STOCK IN URBAN TREES OF SÃO LUÍS ESTIMATED VIA GLOBE OBSERVER
Organization(s):UFMA - UNIVERSIDADE FEDERAL DO MARANHÃO
Country:Brazil
Student(s):Amanda Lilia Santos Leão, Rebeca Bezerra Praseres, Ana Luiza de Cássia Santos Raymundo, Luana Falcão Gonçalves, José Henrique Soares Lima, Isadora Manuela Vieira Jucá, Erick Henzo Botão Guimarães, Caio Vinicius Ferreira Pereira, Ana Clara Lafontaine Farias, Debora Marcele, Mariane Rodrigues de Solsa, Wilson Roberto Caleb de Oliveira Balduin, Eduarda Resende Araújo
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Member(s):Geyse Ribeiro, Nubia Rodrigues, João Santos
Contributors:Hilton Costa Louzeiro, Ana Carolina Abraão Neri, Leidiane Caroline Lauthartte, Aline Bessa Veloso, Aslei Andrade da Silva.
Report Type(s):Virtual Science Symposium Report
Protocols:Surface Temperature, Biometry (including Tree Height), Carbon Cycle
Presentation Poster:
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Language(s):English
Date Submitted:2026-03-01
This study estimated the carbon stock in urban trees on the Greater Island of São Luís (MA), based on data collected between January 2025 and January 2026 using the GLOBE Observer application (Trees protocol). Project participants recorded biometric measurements in the field, such height and diameter at breast height (DBH). The application used these variables in standardized allometric equations to calculate aboveground biomass and, subsequently, the carbon stored per tree and in the total sample. The estimated total carbon reached approximately 28.8 tons (28,800 kg), and the results show that trees with greater height and diameter tend to concentrate higher volumes of carbon. Statistical analysis resulted in a correlation between height and stored carbon (r = 0.994), reinforcing that the preservation of individuals with greater structural size and biomass can generate storage gains when compared to young individuals. It is concluded that continuous monitoring initiatives, with participatory tools such as GLOBE Observer, produce valuable information to support urban management and planning actions, especially in cities with tropical climates such as São Luís, where urban forestry plays a relevant role in mitigating the effects of climate change.
Keywords: Urban forestry; Carbon stock; Biomass; GLOBE Observer.