区域一体化、信息联通与碳排放收敛——来自长三角的经验证据

Regional Integration, Information Connectivity and Carbon Emission Convergence: Empirical evidence from the Yangtze River Delta

摘要:

将碳排放视作一项非期望产出，在一个拓展的增长收敛框架下深入探究区域一体化与信息联通的碳排放效应及其作用机制。基于长三角城市群的实证研究发现：跨省区行政分割增大了城市间碳排放差距，不过发散水平在逐步递减。城市对外信息联通能力越强则城市间碳排放强度差距就越大，但这种情况正逐步得到缓解。区域一体化和信息联通交互下的时空压缩使得城市间碳排放收敛效应显著，且随着时间的推移，效果更加彰显。从作用机制来看，资本流动及其引发的要素转移愈发显示出“清洁”的一面。在数字城市建设和区域一体化发展推进的大背景下，上述发现对于构建城市间互利共生的新发展局面，进而实现碳排放协同具有重要的指导意义。

Abstract:

Carbon emission is regarded as an undesirable output, and the carbon emission effect and its mechanism of regional integration and information connectivity are deeply explored under an extended framework of growth convergence. The empirical study based on the Yangtze River Delta urban agglomeration shows that cross-provincial administrative division increases the carbon emission divergence between cities, but the divergence level is decreasing. The more a city is able to connect to the outside world, the bigger their carbon intensity between cities are, but this situation is gradually being eased. The spatiotemporal compression under the interaction of the two makes the convergence effect of carbon emissions between cities significant, and with the passage of time, the effect becomes more prominent. From the point of view of the mechanism, capital flows and the factor transfer they cause increasingly show a “clean” side. In the context of digital city construction and regional integration development, the above findings have important guiding significance for building a new development situation of mutual benefit and symbiosis among cities, so as to realize carbon emission collaboration.