中国区县单元城乡建设用地经济密度的空间分异研究

Spatial Difference Analysis of the Economic Density of Construction Land at County Level in China

研究目的:将区县单元城乡建设用地经济密度数据与GIS技术结合,分析2004年中国区县单元土地利用经济效率的地域差异,并针对1996—2004年设区市辖区、非设区市单元的城乡建设用地经济密度变化进行分析。研究方法:综合分析法,空间分析法,统计分析法。研究结论:2004年中国城乡建设用地经济密度总体水平由东向西递减,但强中有弱,弱中有强;不同单元水平差距悬殊,整体呈现核心—边缘效应及明显的点轴特征,并形成三大都市连绵区高密度单元高度集中的格局;而1996—2004年间设区市辖区、非设区市单元城乡建设用地经济密度分布总体格局变化不大,但已经出现东部沿海用地效率的提高趋缓,内陆地区尤其是西部地区快速提升,同时,按照基础水平和提高速度区分为6种类型,其中基础低密度提高较慢型涉及的单元数量最多、国土面积最广,并有若干经济密度负增长单元,应引起注意。

The purpose of the study is to analyze the spatial difference of economic efficiency of land use in each countly or distriet county level in 2004 by using economic density data of regional and county-level land lots used for construetion combined with GIS technology. Furthermore, the changes in the economic densities of urban and rural eonstrnetion land between 1996 and 2004 were investigated. Methods employed include comprehensive analysis, spatial analysis and statistical analysis. Results reveal that the overall level of economic density of urban and rural construction land decreased from eastern China to western China in 2004. However, there were exceptions. The difference among regions was significant, and high density units concentrated in three metropolitan areas; core-marginal effect and point-axis characteristics were present. The overall situation of economic density had not changed much between 1996 and 2004. However, the increase of economic density in coastal area in eastern China slowed down and that in the inland areas, especially in the western part of these areas was significant. Among the 6 types of units categorized hy thelevel of economic development and speed of economic density increase, those whose economy was less developed and whose speed of economic densi area and there were some units ty increase was faster accounted for the largest part of total units, possessed the largest whose economic density had negative increase. Therefore, more attention should he paid to such units.