作　者：张彩云 刘乃毓
关键词：碳排放“双控”；碳排放差距；技术进步异质性；生产型技术进步
摘　要：

碳排放总量和强度“双控”是实现“双碳”目标的重要举措。随着中国创新能力不断提升，新技术和新装备层出不穷，在碳排放“双控”的过程中，技术的重要性和关键地位必将愈发凸显。不容忽视的是，中国城市碳排放总量和强度均存在较大差距，具有总量差距大、强度差距增长快的特征，这严重影响到整体推进碳排放“双控”的速度，其背后的成因离不开城市技术进步异质性。中国城市生产型技术进步异质性较弱，绿色型技术进步异质性较强，碳排放差距缩小源于前者，碳排放差距扩大源于后者。技术在减排中的作用与经济发展阶段密切相关，在经济发展水平较高时，技术进步异质性在碳排放差距方面的解释力尤甚，其根本原因在于纯生产技术进步异质性较弱，而纯绿色技术进步异质性太强。从全国层面布局碳排放“双控”战略，推进“双碳”目标实现，应根据经济发展阶段，具体到区域层面有的放矢地发挥不同类型技术进步的作用。

 

China's Urban Carbon Emission Gap and Its Technical Causes

Zhang Caiyun（Chinese Academy of Social Sciences）

Liu Naiyu（University of Chinese Academy of Social Sciences）

Abstract China's pursuit of "dual carbon" goals through the "dual control" of both the amount and intensity of carbon emissions necessitates a keen focus on the pivotal role of technology. With China's burgeoning innovation capacity, a steady stream of new technologies and equipment continues to emerge. As this unfolds, the significance and centrality of technology in the carbon emissions control process are increasingly underscored. However, a notable challenge arises from the substantial gap between inter-city carbon emissions' total volume and intensity within China, which manifests as a significant disparity in total emissions  and a widening gap in intensity, profoundly impacting the overall pace of advancing carbon emissions control. This phenomenon is intricately linked to the heterogeneity of inter-city technological progress. Weak heterogeneity characterizes China's inter-city production-oriented technical progress while green technical progress exhibits strong heterogeneity. Consequently, the carbon emission gap narrows due to the former and widens due to the latter. The efficacy of technology in emission reduction correlates closely with the stage of economic development. Notably, in advanced economic stages, the explanatory power of technological progress heterogeneity in the carbon emission gap is particularly pronounced. This is primarily due to the weak heterogeneity of pure production technology and the overwhelming strength of pure green technology heterogeneity. To effectively outline a national-level "dual control" strategy for carbon emissions and facilitate the realization of the "dual carbon" goals, it is imperative to strategically harness different types of technological progress tailored to the stage of economic development and specific regional contexts.

Key words "dual control"of carbon emissions; carbon emission gap; heterogeneity of technological progress; production-oriented technical progress

 

■作者简介 张彩云，中国社会科学院经济研究所副研究员，北京 100836；

刘乃毓（通讯作者），中国社会科学院大学经济学院博士研究生，北京 102488。

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