京津冀地区主要城市集聚差异研究

本文依据相关理论构建城市集聚测度模型，对京津冀地区主要城市的集聚度进行了测算，并使用传统差异系数研究了京津冀地区内部主要城市间的集聚差异，利用区域特定差异指数判断了京津冀地区空间差异的方向，通过多元回归模型对城市集聚影响要素进行了实证分析。研究结论为：京津冀地区主要城市近10年来的城市集聚程度总体上呈增长趋势，城市间集聚程 度差异明显；中心城市与中心城市外围地区的差异增大，沿海城市与内陆城市差异不明显；出口贸易、固定资产投资及第三产业对城市集聚水平影响显著，是影响城市集聚的重要因素，也是导致城市间集聚加剧的重要直接驱动力。

Agglomeration Difference of Major Urban in Beijing -Tianjin-Hebei

Constructing urban agglomeration measure model based on related theory，and calculating the agglomeration degree of major cities in Beijing-Tianjin-Hebei region,using traditional difference coefficient,this paper studies internal concentration differences between major cities,then uses regional specific differences index to judge the direction of the region space difference,and carries the empirical analysis on urban agglomeration effect factor through the multiple regression model.The research conclusion is:the main city of Beijing-Tianjin-Hebei region in nearly 10 years of urban agglomeration degree is a growing trend;city and the city outskirts' difference is increasing,coastal cities' and inland cities difference is not obvious;exporttrade,investment in fixed assets and third industry have significant effects on urban agglomeration level,they are important factorsthat affect urban agglomeration,and also the important direct driving force of the led to increasing agglomeration between urban cities.