一种基于地理探测器的城镇扩展影响机理分析法

城市化是全球范围内普遍存在的重要现象,尤其发展中国家和地区正经历着快速城市化的过程。快速城市化导致了城市地区的大规模扩张,从而加重了土地资源的压力,带来了一系列的环境和社会问题。定量分析城镇扩展的空间驱动力能更好地辅助城市规划与管理。本文提出了一种量化城镇扩展的指数——城镇扩展密度,并通过地理探测器方法分析了1990—2000年北京市城镇扩展的时空特征及形成机理。研究表明:北京市城镇扩展沿交通干线呈线性扩张,其城镇扩展受到社会经济和地理的共同影响和制约作用,城镇固定资产投资对城镇扩展影响力最大,区域条件次之。这些发现可以为城镇扩展模拟和预测提供更好的改进空间。

Analysis of Influencing Mechanism of Urban Growth Using Geographical Detector

Urbanization is a widespread worldwide phenomenon,especially developing countries and regions are experiencing rapid urbanization process.And the phenomenon has led to a massive expansion of urban areas so as to increase the pressure of land resources,and bring a series of environmental and social problems.Quantitative analysis of the drive of urban expansion can make a better urban planning and management.The paper presents a quantitative urban expansion index-urban growth density.The spatial and temporal characteristics and the formation mechanism of urbanization in Beijing between 2000 and 2010 were analyzed systematically,using the methods geography detectors.Results show that Beijing urban extension along the highway linear,and it influences by social economy and geography.The most influential is urban fixed asset investment,and the secondary is regional conditions.These findings can provide for urban expansion simulation and prediction with better improvement.