School of Economics and Management, Shanghai Maritime University, Shanghai 201306, China.
School of Marxism, Shanghai Maritime University, Shanghai 201306, China.
Int J Environ Res Public Health. 2021 Oct 13;18(20):10718. doi: 10.3390/ijerph182010718.
This study analyzes people's bag usage before and after the introduction of the tougher 2021 plastics ban policies by counting the number of charged carrier bags, inner bags, old plastic bags, and reusable bags used by consumers at the exits of the investigated supermarkets in Shanghai, China. The results indicate positive effects of the tougher 2021 measures by observing significantly decreased usage of charged carrier bags by 46%, and significantly increased usage of old plastic bags and reusable bags by 117% and 36%, respectively. Policy execution loopholes are found in some supermarkets which do not follow the tougher plastics ban measures. Fortunately, the spill-over effects from tougher-measure-executing supermarkets fix this issue to some extent. Additionally, the tougher 2021 measures fail to be the most powerful impacting factor on people's usage of each type of bag. To produce better plastics reducing results, other bag-targeted measures are necessary.
本研究通过统计中国上海被调查超市出口处消费者使用的收费塑料袋、内袋、旧塑料袋和可重复使用袋的数量，分析了在 2021 年更严格的限塑令政策出台前后人们的袋子使用情况。研究结果表明，通过观察到收费塑料袋的使用量显著减少了 46%，旧塑料袋和可重复使用袋的使用量分别显著增加了 117%和 36%，这些更严格的 2021 年措施产生了积极的效果。研究发现，一些超市在执行政策时存在漏洞，没有遵守更严格的限塑令措施。幸运的是，执行更严格措施的超市的溢出效应在一定程度上解决了这个问题。此外，2021 年更严格的措施并不是影响人们每种类型袋子使用的最有力因素。为了取得更好的减少塑料效果，有必要采取其他针对袋子的措施。
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