长江经济带城市投入产出效率空间格局及影响因素分析

科学评价经济活动的投入产出效率,对推动区域经济建设和生态文明均衡发展具有重要意义。基于投入产出分析框架,文章以2003—2018年长江经济带108个地级及以上城市为研究对象,采用Super-EBM模型测算其经济与生态效率,以Kernel密度估计等分析其时空格局,采用网络两阶段模型测算其资源与环境效率,以Dagum基尼系数进一步考察其区域差异及其来源,最后以面板Tobit模型实证分析影响因素的驱动差异。研究显示：长江经济带经济与生态效率均呈现先降后升的变化特征,且下游、中游、上游效率水平递减的分异特征显著,效率分布均存在“单峰”和“双峰”分布交替变化特征,环境压力对城市投入产出效率的影响不一;资源效率与经济效率总体相近,环境效率呈“长期微弱下降—短期急剧上升”的变动态势,资源与环境效率主要区域差异来源均为超变密度,区域间差异次之;经济发展和创新能力对投入产出效率提升呈一定的正向效应,产业结构和对外开放则呈显著负效应,金融发展和财政支出对资源效率呈负效应,对环境效率则呈正向效应,各影响因子对上中下游的驱动作用存在显著异质性。在研究基础上提出建立合作共识、推动绿色转型、实施创新发展、扩大绿色...

Spatial pattern and influencing factors of urban input-output efficiency in the Yangtze River Economic Belt

Scientific evaluation of the input-output efficiency of economic activities is of great significance for promoting the balanced development of regional economic construction and ecological civilization. Based on the input-output analysis framework, this paper takes 108 prefecture-level and above cities in the Yangtze River Economic Belt from 2003 to 2018 as the research objects, uses Super-EBM model to measure their economic and ecological efficiency, uses kernel density estimation to analyze their spatial and temporal patterns, and uses the network two-stage model to measure their resource and environmental efficiency. The Dagum Gini coefficient is used to further investigate the regional differences and their sources. Finally, the panel Tobit model is used to empirically analyze the driving differences of influencing factors. The results show that: 1) The economic and ecological efficiency of the Yangtze River Economic Belt both decreased first and then increased, and the efficiency of the lower reaches, the middle reaches and the upper reaches of the Yangtze River Economic Belt decreased significantly. The efficiency distribution has the characteristics of "single peak" and "double peak" alternating changes, and the environmental pressure has different effects on the urban input output efficiency. 2) Resource efficiency and economic efficiency are generally similar, while environmental efficiency shows a trend of "long-term slight decline - short-term sharp rise". The main source of regional differences between resource and environmental efficiency is hypervariable density, followed by inter-regional differences and intra-regional differences. 3) Economic development and the innovation ability of input and output efficiency have a positive effect, industrial structure and opening to the outside world have significant negative effects, financial development and fiscal expenditure efficiency have negative effects on resources, the environmental efficiency is positively to the effect of various factors on the middle and lower reaches of the driving effect of significant heterogeneity. On the basis of the research, the paper puts forward measures to improve the regional input-output efficiency, such as establishing cooperation consensus, promoting green transformation, implementing innovative development, expanding green finance, adjusting government intervention, and regulating the introduction of foreign investment.