基于PSR模型的广东省城市土地集约利用空间差异分析

ASSESSMENT OF URBAN LAND INTENSIVE USE BASED ON PSR MODEL:A CASE STUDY OF GUANGDONG PROVINCE

将"压力—状态—响应"框架引入到城市土地集约利用评价指标体系中,采用主成分分析方法对评价指标进行赋权,对广东省21个地级市的城市土地集约利用水平进行了评价。结果表明,广东省城市土地利用集约度差异形成的主要影响因素是地理区位条件和经济发展水平,资源赋存状况也是重要的制约条件。城市土地集约利用是一个复杂的系统工程,不仅要注重提高土地利用的产出效益,还要重视系统压力状态的调节和系统反馈能力建设。研究也表明,PSR评价指标体系及主成分分析方法能较好地适应城市土地集约利用评价的需要。

Urban land intensive use index system based on the ＂Pressure-State-Response＂（PSR） model is established and applied to assess urban land intensive use level of 21 cities in Guangdong province with the assistance of principal component analysis method.PSR framework and principle component analysis is feasible and helpful in land intense use assessment since its advantages in describing ＂Man-Land＂ relationship of land use system and the essence of urban land intensive use.The research shows that geographical location and economic development level are the most important factors which affect the spatial differences of urban land intensive use of Guangdong province,and land resources abundance also exerts a profoud influence on it.It is concluded that not only land output,but the ability of adjusting system pressure status and feedback mechanism as well should be especially emphasized in improving land intensive use level.