关键词: 土地城市化, 碳减排, 空间溢出, 产业结构

Abstract: This paper introduces the industrial structure and spatial carbon emissions into the dynamic optimized model, theoretically analyzes the spatial emission reduction effect and tests the influence mechanism with a focus on the mediation effect of industrial structure. The results show that the relationship between land urbanization and carbon emissions is inverted U-shaped at the national level. Compared with the extensive urbanization represented by built-up area, the inverted U-shaped relationship and marginal effect are more typical between the deep urbanization represented by night satellite light data and carbon emission. In terms of regions, the inverted U-shaped relationship is significant only in eastern China, while it is a positive monotonic relationship in central and western China. In the long run, extensive urbanization restrains the carbon emissions of surrounding areas, whereas deep urbanization promotes the emission. The mediation effect of industrial structure is significant for land urbanization to improve spatial emission reduction, and the effect is non-linear. Besides, land urbanization influences industrial restructuring. Consequently, this paper suggests adjusting the promotion mode of land urbanization based on local development status, strengthening regional coordination,grasping the key channels for industrial structure upgrading, and expanding multiple paths for the spatial emission reduction effect of land urbanization.

Key words: Land Urbanization, Carbon Emission Reduction, Spatial Spillover, Industrial Structure