Structural Attributes of Urban Trees Controlling Carbon Dioxide Sequestration: An Applied Study in Al-Umma Park – Baghdad
DOI:
https://doi.org/10.54386/jam.v28i2.3403Keywords:
Climate resilient, Tree biomass, Urban park, Sustainable urban planning, CO2 SequestrationAbstract
With the dramatically increasing global urbanization, cities have evolved as a leading Greenhouse gases (GHG) emissions contributor. In this regard, urban parks are important carbon sinks as trees absorb Carbon Dioxide (CO2) from the atmosphere through photosynthesis that helps in achieving climate sustainability. The current study aimed to evaluate the sequestered CO2 by urban trees in a park in Baghdad called Al- Umma Park. The estimate was based on field measurements of each tree for six dominant species of 236 individual: Acacia spp., Ficus religiosa, Ficus benghalensis, Albizia lebbeck, Phoenix dactylifera, and Syzygium cumini. CO2 sequestration were estimated using allometric equations. Results showed that Phoenix dactylifera had the highest average annual CO2 sequestration (38.39 ± 9.87 kg/year per tree). While Acacia spp. obtained the least (1.73 ± 0.47 kg/year per tree). The total annual sequestration for all trees was 4047.2 kg/year. Multiple linear regression analysis demonstrated that tree structural attributes strongly explain variations in annual CO2 sequestration (R² = 0.97, p < 0.001). Tree diameter emerged as the primary predictor of sequestration potential, while tree height contributed a secondary but significant effect. Overall, results highlight the relevance of urban parks to improving carbon balance locally and contribute to urban sustainability.
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