营商环境优化、技术进步与产业转型升级——基于长江经济带的实证分析

Business Environment Optimization,Technological Progressand Industrial Transformation and Upgrading:An Empirical Analysis of the Yangtze River EconomicBelt

产业是经济发展的载体,产业转型升级是促进经济高质量发展的重要路径。运用固定效应、中介效应与门槛效应实证检验长江经济带108个城市2008—2020年营商环境优化、技术进步对产业转型升级的影响。结果显示:营商环境优化、技术进步对产业转型升级均有显著促进作用,并且技术进步对营商环境优化推动产业转型升级存在部分中介效应;异质性分析发现,营商环境优化对产业转型升级的作用力度呈现自东向西递减特征,并且城市规模越大,营商环境优化对产业转型升级的作用力度越强;进一步拓展分析发现,中小城市营商环境优化对产业转型升级的影响存在单门槛效应,门槛值为0.237。为此,长江经济带各城市应加快推进新型基础设施建设,提升技术与产业的适配度,并结合自身条件,实施差异化发展战略。

Industry is the carrier of economic development,and industrial transformation and upgrading is an important way to promote high-quality development.The fixed-effect model,mediating effect and threshold effect are used to empirically test the impact of business environment optimization and technological progress on industrial transformation and upgrading in 108 cities of the Yangtze River Economic Belt from 2008 to 2020.The results show that both business environment optimization and technological progress have significant effects on industrial transformation and upgrading,and technological progress has some mediating effects on industrial transformation and upgrading promoted by business environment optimization.In terms of heterogeneity,the impact of business environment optimization on industrial transformation and upgrading decreases from east to west,and the bigger the city is,the stronger the impact of business environment optimization is.In terms of threshold effect,the optimization of business environment in big cities has a threshold effect on the improvement of industrial transformation and upgrading level,with a threshold value of 0.237.To this end,cities along the Yangtze River Economic Belt should speed up the construction of new infrastructure,promote the optimization of the business environment,improve the compatibility of technological progress and industrial structure,and implement differentiated development strategies based on their own conditions.