The purpose of this study was to explore the relationships between the urban parks and the air pollutants of Taipei, Taichung and Kaohsiung cities. The study areas were the 500m effective montoring radius of air quality monitoring stations in Taipei, Taichung and Kaohsiung cities.We investigated the areas of urban park and industry park, roadsides trees, traffic flow, and the air pollutants (Dust-fall, TSP, PM10,CO, NO2, SO2). Then, using regression analysis method to analyze the relationships between air pollutants and urban parks or roadsides trees. The results indicate that the urban parks or roadsides trees have significant effect for purifying Dust-fall, TSP, and CO. It shows that the more urban parks or roadsides trees, the less concentration of Dust-fall, TSP, and CO. Finally, we suggest that the governments should development more the urban parks or roadsides trees near the industry areas and the main roads for improve urban environmental quality.

Urban park, roadsides trees, dust-fall, TSP.