School of Economics and Management, Chongqing University of Posts and Telecommunications, Chongqing, China.
PLoS One. 2021 Sep 21;16(9):e0257365. doi: 10.1371/journal.pone.0257365. eCollection 2021.
At present, the digital economy, which takes information technology and data as the key elements, is booming and has become an important force in promoting the economic growth of various countries. In order to explore the current dynamic trend of China's digital economy development and the impact of the digital economy on the high-quality economic development, this paper measures the digital economic development index of 30 cities in China from the three dimensions of digital infrastructure, digital industry, and digital integration, uses panel data of 30 cities in China from 2015 to 2019 to construct an econometric model for empirical analysis, and verifies the mediating effect of technological progress between the digital economy and high-quality economic development. The results show that (1) The development level of China's digital economy is increasing year by year, that the growth of digital infrastructure is obvious, and that the development of the digital industry is relatively slow. (2) Digital infrastructure, digital industry and digital integration all have significant positive effects on regional total factor productivity, and the influence coefficients are 0.2452, 0.0773 and 0.3458 respectively. (3) Regarding the transmission mechanism from the digital economy to the high-quality economic development, the study finds that the mediating effect of technological progress is 0.1527, of which the mediating effect of technological progress in the eastern, northeast, central and western regions is 1.70%, 9.25%, 28.89% and 21.22% respectively. (4) From the perspective of spatial distribution, the development level of the digital economy in the eastern region is much higher than that in other non-eastern regions, and the development of digital economy in the eastern region has a higher marginal contribution rate to the improvement of the total factor productivity. This study can provide a theoretical basis and practical support for the government to formulate policies for the development of the digital economy.
目前，以信息技术和数据为关键要素的数字经济蓬勃发展，成为推动各国经济增长的重要力量。为了探索中国数字经济发展的现状动态趋势以及数字经济对高质量经济发展的影响，本文从数字基础设施、数字产业和数字融合三个维度测度了中国 30 个城市的数字经济发展指数，利用 2015-2019 年中国 30 个城市的面板数据构建了实证分析的计量模型，并验证了数字经济与高质量经济发展之间技术进步的中介效应。结果表明：（1）中国数字经济发展水平逐年提高，数字基础设施增长明显，数字产业发展相对缓慢。（2）数字基础设施、数字产业和数字融合对区域全要素生产率均有显著正向影响，影响系数分别为 0.2452、0.0773 和 0.3458。（3）从数字经济到高质量经济发展的传递机制来看，研究发现技术进步的中介效应为 0.1527，其中东部、东北、中部和西部地区技术进步的中介效应分别为 1.70%、9.25%、28.89%和 21.22%。（4）从空间分布来看，东部地区数字经济发展水平远高于其他非东部地区，数字经济发展对全要素生产率提高的边际贡献率也更高。本研究可为政府制定数字经济发展政策提供理论依据和实践支撑。
