Research On Spatial Structure Patterns And Deconstruction Mechanisms Of Urban Shadow Areas From The Perspective Of Dynamic Networks

In the process of rapid urbanization,the phenomenon of urban shadow areas caused by "unbalanced and inadequate" urban internal development has become increasingly obvious,which has appeared in many cities.In the vicinity of city center,urban shadow area has the main characteristics of low and disorderly construction form,scattered and insufficient public facilities,old and broken architectural style as well as low-end industry type.With the continuous development of digitization,informatization and networking,the mobility of various elements inside the city has continued to increase,and urban spatial structure has gradually transformed from static hierarchical to dynamic network.Correspondingly,urban shadow area is no longer just a static spatial entity under the urban internal spatial hierarchy,but acts as an important part of urban dynamic network,generating dynamic changes in the neighboring urban center and other areas.In this context,an in-depth study of the spatial pattern and resolution mechanism of urban shadow areas under the urban dynamic network structure is conducive to accurately grasping the law of formation and evolution as well as scientifically and rationally proposing governance countermeasures,which has very important theoretical and practical significance in promoting high-quality development.On this basis,the dissertation first builds a theoretical analysis framework for the spatial development of urban shadow areas under the dynamic network perspective.Then it analyzes the spatial development of urban shadow areas.Subsequently,this paper takes Nanjing as the object of empirical analysis,uses urban spatial morphology and mobile phone signaling big data,combined with field surveys,and relies on GIS,Python,Ucinet and other technical platforms to propose a method for identifying the spatial boundary of urban shadow areas from a dynamic network perspective.On this basis,this paper quantitatively analyzes the basic spatial attribute characteristics of urban shadow areas as the overall dynamic network node of the city from the three dimensions of spatial connection strength,spatial connection distance and spatial connection direction,and summarizes the spatial structure of urban shadow areas from the perspective of dynamic network Based on the twelve characteristics of,the six laws and dynamic resolution mechanisms of the spatial structure of urban shadow areas under the dynamic network perspective are proposed.The main innovations of this article can be summarized in the following two aspects:First,a refined method for identifying the spatial boundary of urban shadow areas under the dynamic network perspective is proposed,and the spatial structure characteristics of urban shadow areas under the dynamic network perspective are multidimensional and multi-level quantitative analysis.Aiming at the new changing characteristics of the urban shadow area phenomenon in the urban dynamic network structure,with the help of multidisciplinary analysis methods such as planning,data science,architecture,geography,economics,etc.,from the spatial connection strength,the spatial connection distance,and the spatial connection Three dimensions such as direction,as well as three levels of the overall urban dynamic network,urban shadow areas and other areas,and urban shadow areas,analyze the dynamic change characteristics of the spatial structure of urban shadow areas.Second,the spatial structure mode and resolution mechanism of urban shadow areas under the dynamic network perspective are proposed.On the basis of all-round quantitative analysis,the twelve spatial structure characteristics of the urban shadow area under the dynamic network perspective are summarized,summarized and refined,and then the spatial structure model of the urban shadow area under the dynamic network perspective is constructed,revealing the dynamic network perspective The six laws of the spatial structure model of urban shadow areas are analyzed,and the dynamic elimination mechanism of urban shadow areas is proposed.