Abstract
Many Asian countries are now faced with the challenge to control both the deterioration of air quality and the increase of CO2 emission under the rapid industrialization and urbanization. Recently, an increasing attention is paid on the "co-benefit" policy approach that aims to achieve simultaneous solution to different issues by recognizing their links and synergies. However, not many studies have discussed the policy process that brings co-benefit effect through retrospective analysis at city scale. In this study, we conducted historical analysis of the air pollution in Kawasaki City to examine the co-benefit effect of the air pollution control measures. The study found that the industrial electricity intensity largely fell during 1970s and 1980s, and there was a statistically significant contribution of the pollution policy. It was suggested that the pollution prevention agreement signed between the city government and the factories, as well as the introduction of City Ordinance based on precautionary principles were linked with the creation of co-benefit.
