Li Yanting, Li Xiaozhe, Ahmad Fayyaz
School of Economics, Lanzhou University, Lanzhou, 730000, Gansu, China.
Heliyon. 2024 Sep 27;10(19):e38589. doi: 10.1016/j.heliyon.2024.e38589. eCollection 2024 Oct 15.
Since the reform and opening up, imported solid wastes have pushed China's economic growth while also bringing about serious environmental problems. In this context, China has introduced a ban on "foreign waste" for imported solid waste. Based on the provincial panel data from 2010 to 2020, this paper calculates the Green Total Factor Productivity (GTFP) of the manufacturing industry to measure the level of green development of the manufacturing sector, and evaluates the comprehensive impact of the "foreign waste" ban on the green development of the manufacturing industry by using the continuous Difference-in-Differences method. The study finds that the foreign waste ban greatly promotes the greening of China's manufacturing sector, mechanism analysis shows that foreign waste ban stimulates innovation by innovation effects and increases production cost by cost effects, and the policy effect has heterogeneity as it is more prominent in coastal areas, areas with a lower proportion or a higher level of green development. This result suggests that the promotion of domestic solid waste recycling should be accompanied by further guidance on efficient factor mobility, with different measures based on regional heterogeneity.
改革开放以来，进口固体废物在推动中国经济增长的同时，也带来了严重的环境问题。在此背景下，中国出台了禁止“洋垃圾”进口固体废物的政策。基于2010 - 2020年省级面板数据，本文测算制造业绿色全要素生产率（GTFP）以衡量制造业绿色发展水平，并运用连续双重差分法评估“洋垃圾”禁令对制造业绿色发展的综合影响。研究发现，“洋垃圾”禁令极大地推动了中国制造业的绿色化，机制分析表明，“洋垃圾”禁令通过创新效应刺激创新，并通过成本效应增加生产成本，且政策效应具有异质性，在沿海地区、绿色发展比例较低或水平较高的地区更为突出。这一结果表明，在促进国内固体废物回收利用的同时，应进一步引导要素高效流动，并根据区域异质性采取不同措施。
