Carbon dioxide (CO2) is a member of the group of greenhouse gases present in the Earth's atmosphere, contributing to the phenomenon of global warming. The process of photosynthesis enables trees to absorb carbon dioxide and act as carbon sinks, thus playing a role in mitigating the impacts of climate change. In this particular investigation, the focus lies on the estimation of the potential of carbon sequestration and storage exhibited by a total of eighty-seven (87) trees belonging to eleven (11) different species within a University campus (Mdibbo Adama University, Yola Nigeria). To determine the rate of carbon sequestration, the trees' diameter at breast height (DBH) and their approximate ages were documented and analyzed. Allometric equations were subsequently used to estimate the rate of carbon sequestration of the trees. Results showed that the total carbon content of trees was 9,446.97 kg/tree and the total CO2 sequestered was 349,638.22 kg. The highest sequestration of 232,276.82 kg/tree was recorded in Azardirchta indica (Neem tree), while the lowest (4,261.26 kg/tree) was obtained in Tectona grandis (Teak). The highest average DBH (60.37 inch) was recorded in Gmelina arborea (White teak), which also has the highest carbon content (1,395.97 kg/tree) and more CO2 sequestration rate (5,118.04 kg/tree). On the other hand, Terminalia cappa (Tropical almond), recorded the minimum DBH (35.65 inch), carbon content (496.69 kg/tree), and CO2 sequestration potential (1,821.01 kg/tree). The correlation analysis revealed that while DBH has a positive relationship with CO2 sequestration, the number of trees did not. It was concluded that all the trees studied have high carbon sequestration potentials. Therefore, the school authority should make effort to plant these trees massively, especially in the streets and open spaces within the campus. Beyond the university campus, these trees can also be planted in urban streets and open areas as a way of contributing to mitigation efforts to the effect of climate change as well as providing as ornamental and aesthetic scenery.

Keywords: Carbon sequestration, carbon content, climate change, carbon dioxide, trees