基于复杂网络的西安主城区空间结构研究OACSTPCD

Taking the main urban area of Xi'an as the research area,we used OSM road data,and analyzed the spatial structure by calculating the road network density and identifying multi-level road communities.The results show that①from the overall spatial perspective,the road net-work development level in main urban area of Xi'an is relatively high as a whole.The road network is centered in the old urban area and gradual-ly expands to the outer circle in the northern area of main urban area.②From the global scale,the urban area of Xi'an shows the urban structure of the common development of multiple centers.The old urban area and the surrounding districts interact with each other,forming a new spatial distribution structure of roads,which gradually expands from inside to outside,dispersing the urban center and forming multiple centers.③From the local scale,except Chang'an District,the internal development of each district is balanced,with Beilin District,Xincheng District and Lianhu District as the center,and the development of outer circle,showing a spatial structure of the center is strong and the outer circle is weak.