中国三大城市群知识密集型制造业的空间集聚特征及形成机制——基于科技型企业大数据分析

SPATIAL AGGLOMERATION CHARACTERISTICS AND FORMATION MECHANISM OF KNOWLEDGE-INTENSIVE MANUFACTURING INDUSTRIES IN THREE MAJOR URBAN AGGLOMERATIONS IN CHINA:BASED ON BIG DATA ANALYSIS OF SCIENCE AND TECHNOLOGY-BASED ENTERPRISES

探究不同尺度下知识密集型制造业的集聚特征及其形成机制。结果显示:(1)计算机行业的集聚强度最高,京津冀各行业集聚强度高于长三角和珠三角地区;(2)城市群尺度各行业多集中在100 km范围内,京津冀呈现“核心—边缘”结构,长三角为“扇形”结构,珠三角具有“多核心”特点;(3)城市尺度大部分行业集中在40 km范围内,少数行业在边缘区集聚,京津冀表现为“蔓延型”集聚,长三角为“局部型”和“多中心型”,珠三角为“多中心型”;(4)城市群尺度上的集聚特征依据地区资源禀赋和比较优势,城市尺度上的集聚特征则依生产成本上的空间差异、产业政策和地方保护主义等因素二有所不同。

The study examines the clustering characteristics and formation mechanisms of knowledgeintensive manufacturing industries at various scales.The results show that:1)The computer industry has the highest agglomeration intensity,and the agglomeration intensity of each industry in Beijing-Tianjin-Hebei is higher than that in the Yangtze River Delta and Pearl River Delta regions.2)At the city cluster scale,industries are primarily concentrated within a 100 km radius.3)City-scale industries are mostly concentrated within a 40 km radius,with a small number of industries clustering in peripheral areas.The Beijing-TianjinHebei region exhibits a'spreading type'agglomeration,while the Yangtze River Delta is of'local type'and'multi-centre type',and the Pearl River Delta is of'multi-centre type'.4)The scale of city clusters is determined by regional resource endowment and comparative advantages.The characteristics of agglomeration in each city scale vary depending on spatial differences in production costs,industrial policies,and local protectionism.