大都市区工业重心时空变动轨迹分析:以天津市为例

区域重心模型能够直观地衡量经济属性的动态演变过程以及区域差异,反映城市空间结构的变化。研究采用1989—2009年天津市人口与工业总产值数据,引入重心测度模型,以人口重心为参照,对天津市工业重心在时空上的动态演变轨迹进行实证研究;结合各区县工业差异变动规律,对重心迁移的影响因素进行探析。结果表明：与人口重心在北辰区内缓慢移动不同,21年来天津市工业重心向东南方向迁移,由市中心移动到市区外围,且在东西方向的不均衡性显著大于南北方向。区位条件、政府政策、产业结构调整等因素会对工业布局产生影响,引起工业重心迁移。

Analysis of Temporal and Spatial Movement of The Gravity Center of City Industry：A Case Study of Tianjin

Regional gravity center model can measure the dynamic development course of economic attributes and the regional differences intuitively and accurately.By using the population and total industrial output data of Tianjin from 1989 to 2009,the method of measuring gravity center is established,from which we could analysis the temporal and spatial evolution path of the gravity center of industry comparing with the location of population-gravity-center,to accomplish the empirical research.The paper finds out the regularity of the industrial variation in each area or county,and the factors that influence the migration of industrial gravity center are listed.The results show that the gravity center of population moves slowly in Beichen Area,while gravity center of industry moves to Dongli Area in the southeast direction in 21 years,and the imbalance in the direction of east-west is significantly higher than that of the north-south direction.Location,government policies,industrial structure are factors that can affect the distribution of industry and cause the movement of the center of gravity.