摘要
以兰西城市群各县(区)战略性新兴企业位置大数据为样本,构建了产业空间密度的变异系数项,分别从“规模”和“形态”两个维度综合衡量战略性新兴产业的空间结构。利用面板回归模型、门槛回归模型和空间杜宾模型考察了战略性新兴产业空间结构与碳排放强度之间的线性、非线性以及空间交互影响。研究发现:蔓延型的战略性新兴产业空间结构对碳排放强度具有显著的负向影响。以城市规模为门槛变量,战略性新兴产业蔓延型发展对碳排放强度的影响存在单一门槛,当城市规模跨越门槛值后,战略性新兴产业蔓延型发展对碳排放强度的负向影响和显著水平逐步加强。直接效应、间接效应和总效应综合反映出本地战略性新兴产业蔓延型发展对本地碳排放强度降低具有显著的负向效应,邻近城市产业空间结构的蔓延型演进也会降低本地区的碳排放强度。
Using the strategic emerging industries in different districts of Lanzhou-Xining urban agglomeration as a sample,constructs the coefficient of variation of industrial spatial density to comprehensively measure the spatial structure of strategic emerging industries from the two dimensions of“scale”and“form”.At the same time,the paper examines the relationship between the spatial structure of strategic emerging industries and carbon emission intensity by using the panel regression model,threshold regression model and spatial Dobbin model.The research found that:(1)The spreading spatial structure of strategic emerging industries has a significant negative impact on carbon emission intensity.(2)With city size as the threshold variable,there is a single threshold for the impact of spreading development of strategic emerging industries on carbon emission intensity.When the city size crosses the threshold,the spreading development of strategic emerging industries will substantially have a more negative impact on carbon emission intensity.(3)The direct effect,indirect effect and total effect comprehensively reflect that the spreading development of local strategic emerging industries has a significant negative effect on the reduction of local carbon emissions.Consequently,the spreading evolution of the industrial spatial structure of neighboring cities will reduce the carbon emission intensity of that region.
出处
《城市问题》
CSSCI
北大核心
2022年第5期4-16,共13页
Urban Problems
基金
国家社会科学基金项目(20XJL008)——“黄河流域高质量发展下兰州—西宁城市群产业空间结构优化研究”。
关键词
战略性新兴产业空间结构
碳排放强度
企业位置大数据
门槛特征
空间计量模型
strategic emerging industrial spatial structure
carbon emission intensity
enterprise location big data
Threshold Characteristics
Spatial Econometric Model
