The Evolution of Spatial Structure of Typical Cities in China on the Basis of Graph Spectral Features

Based on the methodology of Geo-info-TUPU,some typical cities with high-level economy development were carefully chosen,and the evolution process of typical Chinese urban spatial structures was analyzed at present day.In compliance with the graph spectral of urban spatial structures in different periods,some influencing factors were explored in the course of urbanization and evolution of urban spatial structures.Meanwhile,the evolution of urban spatial structure was mastered by the comprehensive understanding and measuring the features of urban spatial structure.Furthermore,with the purpose of offering service to the future city development in a healthy,coordinating and orderly way,the spatio-temporal principles of the evolution of urban spatial structure was summed up under the background of urbanization.The results of the study are showed as follows: 1) The formation of urban spatial structures is the process of space distribution forms and interaction among influencing elements such as urban natural environment,urban economic development,urban land utilization and urban transportation structures.2) Large numbers of population transfering into cities during the process of urbanization exerts the impacts of expansion developing tendency on the evolution of urban spatial structures.3) The major factors to affect the urban spatial structures are landform elements,river elements,bay elements,population elements and economic development,etc.4) Well-conditioned urban transportation network is prerequisite for the normal urban operation.Meanwhile,urban economic booming can not go without a high efficient urban transportation network system.In addition,the expansion of urban transportation network structures is characterized by various development structures,like concentric circles ribbon structure,sector structure and so on.And 5) under the definite natural circumstances,such as terrain elements,water system,etc.,urban spatial structure is formed by the interaction and coordination between land use and transportation network in the specific urban spatial region.