Study on the Variations Characteristics of Compactness of China's Large Cities Based on Entropy Weight Method

This paper, studies on compact city, aiming at improving the efficiency of the urban internal spatial organization, to establish the potential relationship between urban form and urban sustainable development. It builds the comprehensive index system for compactness from six dimensions which include economic development level, population size and structure, infrastructure development level, public service level, land resource utilization structure and ecological environment development index in the paper. This index measures the variations characteristics of compactness of China’s large cities in 2002, 2007 and 2012 from EDC, SDC and SDC, and the purpose of those three aspects is to provide basis for policy formulation and adjustment of city development.