黄河流域产业集聚模式对绿色经济效率的影响

Influence of Industrial Agglomeration Patterns on Green Economy Efficiency in the Yellow River Basin

黄河流域生态保护和高质量发展的关键在于推动以绿色经济效率提升为核心的绿色发展转型。城市作为流域内资源要素和经济活动的主要汇集地,其产业集聚模式会对绿色经济效率提升产生重要影响。在梳理相关文献的基础上,分析产业集聚模式对绿色经济效率影响的理论逻辑,然后采用超效率SBM模型和Malmquist-Luenberger指数测算2006—2020年黄河流域81个地级市的绿色经济效率,并基于此面板数据构建双向固定效应模型,分析黄河流域城市层面不同产业集聚模式对绿色经济效率的影响情况,同时借助面板门槛模型考察这种影响随着城市规模变化而变化的特征。研究结论如下,理论上产业集聚模式对绿色经济效率的影响存在一定程度的不确定性,需要根据研究范围通过实证分析加以确定;现阶段黄河流域内产业的专业化集聚整体上呈现出抑制绿色经济效率提升的特征,多样化集聚整体上呈现出促进绿色经济效率提升的特征;黄河流域内产业多样化集聚对绿色经济效率的影响效应在流域内不同地区间存在明显差异。此外,流域内不同产业集聚模式对绿色经济效率的影响均存在基于经济发展规模、人口规模和地理空间规模三大城市规模维度门槛变化的特征。

The key to ecological protection and high-quality development in the Yellow River Basin lies in promoting green development transformation centered on green economic efficiency improvement.As the main hubs of resource elements and economic activities in the basin,city and its industrial agglomeration pattern have an important impact on the improvement of green economic efficiency.Based on a review of relevant literature,this paper analyzes the theoretical logic of the influence of industrial agglomeration mode on green economic efficiency.Then,through measuring the green economic efficiency of 81 prefectural-level cities in the Yellow River Basin from 2006 to 2020 by adopting the super-efficiency SBM model and the Malmquist-Luenberger index,this paper constructs a panel data,and analyzes the impact of different industrial agglomeration modes on green economic efficiency at the city level by using a two-way fixed-effects model.At the same time,it also examines how this impact varies with city size by a panel threshold model.The final conclusions are as follows:theoretically,there exists a certain degree of uncertainty about the impact of industrial agglomeration modes on green economic efficiency,and it needs to be determined through empirical analyses according to the research scope;at the present stage,the specialized agglomeration of industries in the Yellow River Basin exhibits the characteristic of inhibiting the improvement of green economic efficiency.In addition,diversified agglomeration exhibits the characteristic of promoting the improvement of green economic efficiency;the influence effect of diversified industrial agglomeration on green economic efficiency in the Yellow River Basin varies significantly among different regions in the basin.Moreover,the influence of different industrial agglomeration modes on green economic efficiency in the basin is characterized by the change of the threshold based on three city size dimensions,that is,the scale of economic development,population size and geographical spatial scale.