辽宁省数字经济发展时空差异分析及动态演进特征研究

Research on the Spatiotemporal Differences Analysis and Dynamic Evolution Characteristics of Digital Economy Development in Liaoning Province

数字经济是社会发展的“新引擎”,其测度、时空差异及动态演进特征是亟待探究的重要问题.本文引入文本分析法构建数字经济指标体系,运用熵值法测算2011—2019年辽宁省数字经济综合指数,采用Moran’s I指数、Dagum基尼系数、核密度估计和空间Markov链揭示时空差异及动态演进特征,考虑空间相关性后采用空间σ收敛考察趋同特征.研究表明:2011—2019年间,辽宁省各城市的数字经济发展水平有所提高,但呈现显著的不平衡性,城市之间数字经济发展差异越来越大,沈阳现代化都市圈和辽宁沿海经济带的不均衡发展是影响辽宁省数字经济差异的主要因素.数字经济发展水平较低的城市快速发展的概率更大,甚至能够实现跨越式增长.

Digital economy has become the"new engine"of social development.Its measurement,spatiotemporal differences,and dynamic evolution characteristics are also important issues to be explored.This paper introduces the text analysis method to build the digital economy index system,uses the entropy method to calculate the comprehensive index of digital economy,uses Moran′s I,Dagum Gini coefficient,Kernel density estimation,and spatial Markov chain to reveal the space-time difference and dynamic evolution characteristics,and uses spaceσconvergence to study the characteristics of convergence during 2011-2019.The results find that the level of the digital economy in Liaoning Province during 2011-2019 has improved,but there is a significant imbalance in regional development.The unbalanced development of Shenyang′s modern metropolitan area and the Liaoning coastal economic belt is the main factor affecting the difference in the digital economy of Liaoning Province.Cities at a low level of digital economic development are more likely to develop rapidly,and even achieve leapfrog growth.