基于建成区扩展对南京弹性势能最佳发育区间的测度

Measurement of Optimal Development Interval of the Elastic Potential Energy in Nanjing Based on the Expansion of Built-up Area

将物理学中的弹性势能与城市弹性相结合,以探究城市缓冲功能、紧压功能、复位功能和带动功能对城市弹性发展的影响.研究结果有3点:(1)从城市弹性功能出发构建南京弹性势能测度体系,并运用理想点组合赋权法对其进行量化;(2)构建南京弹性势能—建成区土地扩展模型,用散点图形式反映两者函数关系,并划分出南京城市弹性势能增速区间;(3)在一定程度上,通过对南京建成区形变量的计算,大致预测城市弹性发育情况,从而对城区土地开发规模作出指导.

This paper combines the elastic potential energy of physics with the city’s elasticity to explore the effect of urban cushioning function,compact function,reset function and driving function on urban flexibility development. The research results of this paper are three things. First,it builds Nanjing elastic potential energy measure system from the city’s elastic function,and quantifies it by using the ideal point combination method. Secondly,it constructs the land extension model of the elastic potential energy in Nanjing,which reflects the relationship between the two functions variable in the form of scatter plots,and divides the growth interval of the elastic potential energy in Nanjing. Thirdly,to some extent,through the calculation of the shape variable of Nanjing construction area,the city’s elastic development is predicted roughly,so as to give guidance to the urban land development scale.