基于GIS的清远市人口分布时空演变特征分析

采用人口密度、空间自相关、人口分布结构指数和人口重心等分析方法,结合GIS技术和GeoDa软件分析了清远市2005年—2015年人口分布时空演变特征.结果显示:清远市人口密度地域差异明显,北低南高;人口向清远市区集聚,但多地空间相关性较弱;人口分布不均衡但态势逐渐减弱;人口重心始终位于英德市黄花镇境内,偏离几何中心,呈西北向东南移动.清远市人口时空演变主要受自然环境和区位、城市规划和政策、轨道交通和经济发展水平等因素影响.

A GIS-based Study on Temporal-spatial Evolution Characteristics of Population in Qingyuan City

Combined with GIS and GeoDa software in this paper, the temporal-spatial evolution characteristics of population in Qingyuan City from 2005 to 2015 have been discussed with population density, spatial autocorrelation method, imbalance index, concentration index and gravity center of population method. The results show that the population density of Qingyuan City characterizes by north-low and south-high, showing obvious regional differences. The population is closing to urban area, but most areas have a weak spatial correlation. The distribution of population is unbalanced but this situation is declining.The population gravity center is always located in Huanghua town of Yingde City and deviating from the geometric center in the northwest to southeast movement. The temporal and spatial evolution of population in Qingyuan City is mainly influenced by natural environment and location, urban planning and policy, rail transit and economic development level.