中国建成区绿地率区域差异的多尺度分析

建成区绿地率区域差异具有显著的尺度依赖性，基于多尺度视角对其进行分析、综合研判不同尺度间关系，可更确切且全面地揭示其特征，为探寻最佳研究尺度，以及制定兼具差异化和协调性的城市绿地建设决策提供科学依据。综合运用标准差、变异系数、锡尔指数和尺度方差等方法，将地带、省、市3个尺度纳入统一的分析框架，探究1996—2015年中国建成区绿地率区域差异。1)差异测度研究表明，自1996年以来，我国建成区绿地率区域差异在3个尺度上长期存在，均呈现缩小趋势，并表现出明显的尺度效应。2)尺度方差分解结果显示，建成区绿地率尺度方差及构成由大到小依次为市级、省级、地带级，即尺度越小，其尺度方差越大，对区域差异的贡献份额越大。

Multiscale Analysis of Regional Difference of Green Rate of Built District in China

The regional difference of green rate of built district reflects significant scale dependency. Based on the multiscale perspective, it is more accurate and comprehensive to reveal its characteristics of the different scales and the relationship between different scales, and provide scientific basis for the government to formulate the policy of differentiation and coordination. This paper uses the research methods such as standard deviation, coefficient of variation, Theil Indices and scale variance, and brings the three scales of region, province and city into a unified analytical framework. The result shows that: 1) The regional differences of three scales of green rate of built district in China have been existed for a long time since 1996, and they all show a decreasing trend and obvious scale effect. 2) The smaller the scale, the larger the scale variance, and the greater contribution to regional difference. The scale variance and composition of green rate of built district from large to small are the scale of city, province and region.