| 英文摘要 |
The primary contributors to air pollution in Changhua County are emissions from various industrial factories and diverse motor vehicles. Urban land use patterns are evolving, and public environmental awareness is on the rise. Consequently, the overall number of factories has been declining annually. However, the usage of motor vehicles has been steadily increasing, making vehicle emissions the primary urban air pollution source. Hence, mitigating vehicle emissions is a critical environmental concern in the county.
Currently, there are approximately 830,000 registered motorcycles in the county, with around 570,000 reaching 5 years old and requiring annual emission inspections. In addition to notifying and educating motorcycles subject to scheduled inspections, this project conducts periodic roadside inspections and sends official letters to motorcycles that have not undergone inspections. Irregular motorcycle roadside inspections, handling reports of non-compliant vehicles, and promoting weekend outdoor inspections at motorcycle inspection stations in remote towns are implemented to effectively control the emission of air pollutants from motorcycles.
To comprehend the pollution situation caused by motorcycle emissions in Changhua County over the past three years, this project analyzes the average concentrations of CO and HC based on motorcycle inspection data from 2011 to 112. The analysis reveals a decrease in average CO concentration from 1.15% in 2011 to 1.01% in 112, and a decrease in average HC concentration from 358 ppm in 2011 to 286 ppm in 112. This indicates that the promotion of motorcycle inspection services and encouragement of phasing out old motorcycles in recent years have effectively reduced motorcycle pollution emissions in the county.
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