广东省城镇建设用地经济密度差异时空特征及影响机理

基于广东省21个地级市的城镇建设用地经济密度数据，利用ArcGIS空间分析、泰尔指数、重心模型等方法分析了1996―2008年广东省城镇建设用地经济密度差异的时空特征，并构建面板数据模型对其影响机理进行了探讨。结果表明：1）1996―2008年，广东省城镇建设用地经济密度总体差异波动增大，城镇建设用地经济密度重心向西北偏移；2）广东省各城市之间城镇建设用地经济密度差异显著，空间格局上存在较明显的集聚和峰值效应；3）广东省各城市之间城镇建设用地经济密度的相对发展速度差别较大，按基础水平和提高速度的差异划分为4种类型区，其中基础高密度提高较慢类型区和基础低密度提高较慢类型区涉及城市数量较多；4）随着产业结构的优化、资本与劳动力投入规模的增大、交通区位的改善和科技水平的提升，广东省城镇建设用地的经济效益将会得到不断提高。

Temporal-Spatial Features and Influence Mechanism of Disparity of Urban Construction Land Economic Density in Guangdong Province

This paper analyzed the temporal-spatial features and influence mechanism of urban construction land economic density of Guangdong Province during 1996-2008 with methods including ArcGIS spatial analysis, Theil index, gravity center model and panel data model, based on panel data of urban construction land economic density of the 21 prefecture-level cities in Guangdong. The conclusions were as follows: First, the overall disparities of urban construction land economic density among those cities were increasing with volatility and gravity center of urban construction land economic density moving to northwest from 1996 to 2008. Second, the difference of urban construction land economic density among the cities was obvious and spatial pattern showed a certain agglomeration and peak effect in 2008. Third, the relative development speed was also very different, and among the 4 type regions categorized by the basic level and increasing speed of economic density, those whose economic density was less and speed of economic density increase was faster and whose economic density was higher and speed of economic density increase was faster had the highest proportion. Finally, with the influence factors of industrial structure optimization, increased input of labor or capital, traffic location change and improved science and technology level, the economic benefit of urban construction land in Guangdong would be significantly improved．