Student Research Reports

View Research Report

This study aimed to investigate and compare the amount of carbon sequestration by trees with greenhouse gas emissions resulting from electricity consumption and fuel use within Phak Mai Witthayanukul School. Five main study sites were designated: in front of the Chinese language classroom, in front of the lower secondary classrooms, in front of the flagpole area, in front of the auditorium, and from the music room to the pétanque court. Tree species and sizes within the designated areas were surveyed. Tree height was measured using the GLOBE Observer application, and carbon sequestration was calculated using the LESS-FOR-01 website developed by the Thailand Greenhouse Gas Management Organization (Public Organization). For greenhouse gas emissions (carbon footprint), data on electricity consumption and fuel use from lawn mowers were collected over a one-year period (2025) and calculated using emission factors in accordance with TGO standards. The results showed that a total of 60 trees representing 7 species sequestered 43,070.74 kgCO₂eq of greenhouse gases. Among these, Alstonia scholaris (20 trees) exhibited the highest carbon sequestration potential at 19,229.60 kgCO₂eq, followed by pine trees (18 trees), which sequestered 17,600.22 kgCO₂eq. Annual greenhouse gas emissions from electricity consumption totaled 3,933.58 kgCO₂eq, with the highest emissions occurring in September. Fuel use from lawn mowers contributed an additional 332.14 kgCO₂eq. Comparison between carbon sequestration by trees and greenhouse gas emissions from school operations revealed that carbon sequestration was significantly greater than emissions (43,070.74 > 4,265.72 kgCO₂eq). This indicates that the green areas within the school have sufficient potential to offset greenhouse gas emissions and effectively mitigate the impacts of climate change.