Investigation and estimation of effect about awareness raising campaigns by local governments aiming for domestic waste reduction

Abstract

Awareness raising campaigns aiming for waste reduction have been implemented in various ways by local governments in Japan. However, there is still no exhaustive investigation of those. We conducted online questionnaire survey to local governments whose population were over 50 thousand. As a result, the implementation rate of the campaigns was as high as 98%, and the percentage of waste types intended to be reduced was high in kitchen garbage and paper, which account for the top two household waste emissions. Multiple regression analysis with the implementation status of the campaigns and social indicators as the explanatory variables, and with the emission intensity of domestic waste as the objective variable, was conducted to estimate the effect of the campaigns. According to the finally obtained multiple regression equation, it was indicated that the implementation of pay-as-you-throw and the large number of household members reduce the emission intensity of domestic waste as the previous research had suggested. As for the campaign effect, it was thought that three types of intervention methods reduce the emission intensity of domestic waste, but the other three types contrarily increase that.