This study was conducted to explore the ecosystem services of urban forests in Adama city, central Ethiopia. Attempts were made to quantify the carbon storage and sequestration, air pollution removal and hydrological benefits of urban trees. The urban forest structure and composition of the city was surveyed and analyzed. The i-Tree Eco Model was employed to analyze the ecosystem services based on the current urban forests structure of the city. The result revealed that the urban trees of the Adama city stored a total of 116,000 tons of carbon. The tree species identified with higher CO₂ sequestration per year were Melia azedarach (15%), Eucalyptusglobulus (8%), Carica papaya (7%), and Delonix regia (6%). In addition, 22%, 12%, 10% and 4% of carbon were stored by Eucalyptus globulus, Melia azedarach, Carica papaya and Delonix regia tree species respectively. Moreover, trees and shrubs species in the city removed about 188 thousand tons of air pollutants caused by O₃, CO, NO₂, PM2.5 and SO₂ per year. In Adama, 35% of the urban trees’ volatile organic compaound emissions were from Eucalyptus cinerea and Eucalyptus globulus. The monetary value of Adama urban forest in terms of carbon storage, carbon sequestration, and pollution removal was estimated to 43,781, 3,121 yr⁻¹ and 320,915,596 USD yr⁻¹, respectively. It was concluded that significant quantity of CO₂ and air pollutants were found being removed by the exotic tree and shrub species. However, every plant species found in the city does not mean ecologically important due their VOC emitting nature. Thus, the results of the study are valuable in increasing the awareness of the decision making bodies, the public and any stakeholders of the eco-benefits of urban trees in the mitigation of climate changes.

本研究旨在探索埃塞俄比亚中部阿达玛市城市森林的生态系统服务。尝试量化城市树木的碳储存和封存、空气污染去除和水文效益。对全市城市森林结构和组成进行了调查分析。基于城市当前的城市森林结构，采用 i-Tree 生态模型来分析生态系统服务。结果显示，阿达玛市的城市树木共储存了11.6万吨碳。具有较高CO标识的树种₂每年封存是苦楝（15％），蓝桉（8％） ，番木瓜（7％），和Delonix regia (6 % )。此外，22%、12%、10%和4%的碳分别被蓝桉、楝树、番木瓜和Delonix regia树种储存。此外，全市乔木和灌木种每年去除O ₃、CO、NO ₂、PM2.5 和SO ₂造成的大气污染物约18.8万吨。在阿达玛，城市树木 35% 的挥发性有机化合物排放来自灰桉和蓝桉。阿达玛城市森林在碳储存、碳固存和污染清除方面的货币价值估计为 43,781、3,121 年^-1和 320,915,596 美元 yr ^-1，分别。得出的结论是，发现大量的 CO ₂和空气污染物被外来乔木和灌木物种去除。然而，由于其排放 VOC 的性质，城市中发现的每种植物物种并不意味着具有生态重要性。因此，研究结果对于提高决策机构、公众和任何利益相关者对城市树木在减缓气候变化方面的生态效益的认识很有价值。