研究了数字经济促进城市经济高质量发展的影响及其内在作用机制,并基于中国城市群2010—2020年城市层面数据,采用空间计量模型实证检验了数字经济对城市经济高质量发展的影响,着重探究了长江经济带数字经济对城市经济高质量发展的作用。研究发现,中国城市群城市的数字经济发展水平和经济高质量发展水平均存在明显的空间差异;数字经济显著促进了城市经济高质量发展,产业结构高级化是数字经济释放城市经济高质量红利的重要中介因素和门槛因素。数字经济红利存在明显的空间异质性,长江经济带数字经济红利明显高于全国平均水平。其中,长三角城市群数字经济红利最大,成渝城市群次之,长江中游城市群最低。基于研究结论,提出加快发展数字经济、促进产业结构转型升级、推动实现城市经济高质量发展的对策建议。
This paper studied the impact of digital economy on the high-quality development of urban economy and its internal mechanism. Based on the urban-level data of China's urban agglomerations from 2010 to 2020, the spatial econometric model was used to empirically test the impact of digital economy on the high-quality development of urban economy, and the effects of digital economy on the high-quality development of urban economy in the Yangtze Economic Belt. The study found that the development level of digital economy and high-quality economy of cities in China's urban agglomerations were generally on the rise. Digital economy had significantly promoted the high-quality development of urban economy, and the upgrading of industrial structure was an important intermediary and threshold factor for the digital economy to release the high-quality dividends of urban economy. There was obvious spatial heterogeneity in digital economic dividend. The digital economic dividend of the Yangtze Economic Belt was significantly higher than the national average, with the Yangtze River Delta urban agglomeration having the highest digital economic dividend, followed by the Chengdu-Chongqing urban agglomeration, and the middle reaches of the Yangtze River urban agglomeration having the lowest. Based on the above research conclusions, the paper put forward some suggestions to accelerate the development of digital economy, promote the transformation and upgrading of industrial structure, and promote the high-quality development of urban economy.
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