| 英文摘要 |
For an extended period, Changhua County has been dedicated to industrial and agricultural development. The primary contributor to air pollution is emissions from diverse industrial factories and exhaust fumes from various types of motor vehicles. With shifts in urban land usage and a heightened public awareness of the environment, the number of factories has been decreasing annually. However, the total number of operational motor vehicles has been on the rise, establishing emissions from these vehicles as the primary source of urban air pollution. Consequently, mitigating vehicle emissions has become a critical environmental concern in the county.
Presently, the county has approximately 64,000 registered diesel vehicles, with around 36,000 exceeding a decade in age. This initiative actively informs and educates owners of aged diesel vehicles, conducting roadside inspections, visual assessments for smoke, and utilizing smart technology inspections to enhance control over black smoke emissions from operational diesel vehicles. Moreover, the promotion of self-management and the integration of inspection and maintenance services are emphasized to efficiently regulate the emission of air pollutants from motorcycles.
To comprehend the pollution scenario from diesel vehicles in Changhua County over the past three years, this initiative analyzes the average opacity concentration of diesel vehicle inspection results from 2021 to 2023. The analysis reveals a decrease in the average opacity concentration within inspection stations from 0.4m-1 to 0.3m-1, and outside inspection stations, it has reduced from 0.4m-1 to 0.2m-1. This suggests a decline in diesel vehicle pollution emissions in the county through the implementation of self-management systems and the gradual phase-out of older vehicles.
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