数字经济对江苏城市绿色高质量发展的影响研究——基于有调节的中介效应模型

Research on the Impact of Digital Economy on the Green and High Quality Development of Jiangsu Cities—Based on the Mediated Effect Model

新发展阶段下,数字经济作为经济社会发展的新动能,对推动城市绿色高质量发展起着重要作用。本文基于2016~2023年江苏省13个地级市的面板数据,使用熵值法测度各城市数字经济指数及绿色高质量发展指数,运用双固定效应模型、中介效应模型、调节效应模型等方法实证检验数字经济对江苏城市绿色高质量发展的影响及路径。研究发现:数字经济对城市绿色高质量发展具有显著的带动作用;数字经济能够通过提高科技创新水平促进城市绿色高质量发展;绿色创新在科技创新对绿色高质量发展影响中起正向调节作用;数字经济对城市绿色高质量发展存在显著的分区域、分水平、分指标异质性效应。基于以上结论,本文认为企业政府及相关部门应积极推动数字经济基础设施建设,同时应实施区域发展战略,以促进区域间协同发展。除此以外,还需重视绿色创新这一调节机制、科技创新这一中介机制,推动数字经济赋能城市绿色高质量发展。In the new development stage, digital economy, as a new kinetic energy of economic and social development, plays an important role in promoting the green and high-quality development of cities. Based on the panel data of 13 prefecture-level cities in Jiangsu Province from 2016 to 2023, this paper uses entropy method to measure the digital economy index and green high-quality development index of each city, and empirically tests the influence and path of digital economy on green high-quality development of Jiangsu cities by using the methods of double fixed effect model, intermediary effect model and adjustment effect model. It is found that the digital economy plays a significant role in promoting the green and high-quality development of cities;digital economy can promote the green and high-quality development of cities by improving the level of scientific and technological innovation;green innovation plays a positive regulatory role in the influence of scientific and technological innovation on green and high-quality development;the digital economy has significant heterogeneous effects on the green and high-quality development of cities in different regions, levels and indicators. Based on the above conclusions, this paper holds that enterprise governments and relevant departments should actively promote the infrastructure construction of digital economy, and at the same time implement regional development strategies to promote coordinated development among regions. In addition, we need to pay attention to the adjustment mechanism of green innovation and the intermediary mechanism of scientific and technological innovation, so as to promote the green and high-quality development of digital economy.