行政边界地区既是经济发展的低位区,也是环境污染的聚集地,数字经济的兴起为加快其绿色发展创造了新机遇。以行政边界地区为研究对象,基于我国2012—2021年284个地级市及相关边界县的数据,运用双重固定效应模型检验数字经济的生产提效和低碳减排作用。研究发现,数字经济能够通过缓解市场分割、打破行政壁垒赋能行政边界地区实现“减排增效”目标。异质性分析表明,数字经济的这一效应与城市规模和产业数字化水平有关,但该效应仅存在于超大城市和特大城市,在大城市和中小城市尚不显著,且产业数字化比重越高的城市,其作用效果越显著。研究结果可为进一步完善我国行政边界地区数字基础设施建设、建立一体化污染监控平台、加快促进数字经济赋能行政边界地区减排增效提供政策启示。
Due to the unique geographic characteristics of administrative border areas, these regions often serve as both economic underdeveloped zones and hotspots for environmental pollution. The digital economy offers new opportunities to balance regional development and achieve the “dual carbon” goals. Focusing on administrative border areas as the research object, this study utilizes data from 284 Chinese cities and relevant border counties, employing a two-way fixed effects model to examine the “efficiency improvement” and “carbon reduction” effects of the digital economy. The findings reveal that the digital economy can synergistically achieve the dual objectives of “carbon reduction and efficiency improvement” in administrative border areas, with the alleviation of market segmentation and administrative barriers being key mechanisms. Heterogeneity analysis indicates that this effect of the digital economy is related to city size and the level of industrial digitization. Specifically, this effect is only observed in super and mega cities in China, while large,medium and small cities have not yet realized it. Moreover, cities with a higher proportion of industrial digitization exhibit more significant effects. These results provide policy implications for further improving digital infrastructure in administrative border areas, establishing integrated pollution monitoring platforms, and accelerating the empowerment of the digital economy in these regions.
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