交通基础设施建设能否促进长江经济带高质量发展收敛?

Can the Construction of Transportation Infrastructure Promote the Convergence of High-quality Development in the Yangtze River Economic Belt?

高质量发展是全面建设社会主义现代化国家的首要任务。基于长江经济带2003—2020年地级市面板数据为样本,实证检验长江经济带高质量发展的收敛性,以及交通基础设施建设对高质量发展收敛效应的影响。研究结果表明:长江经济带高质量发展存在显著的绝对收敛、俱乐部收敛和条件收敛效应;分地区来讲,长江经济带中游地区收敛效应最强,下游次之,上游最弱,分城市规模来讲,超大城市收敛效应最强,大城市次之,特大城市最弱;交通基础设施建设对长江经济带高质量发展收敛效应存在一定程度的促进作用,并且高速铁路建设的作用强于公路设施建设的作用;分地区来看,交通基础设施建设对长江经济带上游和下游地区的高质量发展收敛存在显著的促进作用,但在中游地区则存在抑制作用;从城市规模来看,无论是公路设施或是高速铁路的建设均存在一定程度的促进收敛效应的作用。

The first and foremost task to build a modern socialist country in all respects is high-quality development.Using the panel data of cities in the Yangtze River Economic Belt from 2003 to 2020 as a sample,this paper empirically tests the economic convergence of high-quality development of the Yangtze River Economic Belt,and analyzes the relationship between transportation infrastructure construction and the convergence effect of high-quality development.The results show that:there are significant absolute convergence,conditional convergence and club convergence effect in the high-quality development of the Yangtze River Economic Belt.In terms of regions,the convergence effect is strongest in the middle reaches of the Yangtze River Economic Belt,followed by the downstream regions,and weakest in the upstream regions.In terms of city size,the convergence effect is strongest in megacities,followed by large cities,and weakest in large cities.The construction of transportation infrastructure can promote the convergence effect of high-quality development in the Yangtze River Economic Belt to a certain extent,and the role of high-speed railway construction is stronger than that of road infrastructure construction.In terms of regions,transportation infrastructure plays an important role in promoting the convergence of high-quality development in both the upper and lower reaches of the Yangtze River,but restricts the convergence effect in the middle reaches.In terms of city size,whether road infrastructure or high-speed railway has a certain degree of influence of promoting convergence.