Quantitative Evaluation Of Urban Spatial Identity Resources Based On ANP-GIS

In the past 40 years after reform and opening up,China's urban material space has undergone rapid expansion with a development model featuring “large-scale” and “standardization”,resulting in an image of modelized modern city,leading to a crisis of urban identitys in the loss under "Same Imagines of the City".Under this background,it has become a significant research topic to study urban spatial identitys,so as to guide the urban design,shape unique urban spatial identitys,thus to realize a more specialized development model,promoting the development of urban soft power.The evaluation regarding urban spatial identity resources is a critical research basis for overall urban design to propose strategies for the identitys sculpturing in urban space.In current research on the quantitative evaluation over urban spatial identity resources,the analytic hierarchy process is mostly adopted,which has become the main method for the construction of the evaluation system in urban planning research given its high usability.However,the analytic hierarchy process has its methodological flaws when facing the construction of the evaluation model over urban complex system as it simplifies the system to a tree structure.Based on the in-depth research on the theory of urban spatial identitys at home and abroad,this thesis summarizes relevant theoretical contents.Firstly,this thesis systematically combs the concepts and composition of urban identitys,urban spatial identitys,and urban special styles to define related concepts,and focuses the research object on urban spatial identitys.Secondly,the carrier of urban space system,namely urban spatial identity resources and their influencing factors are analyzed and summarized,dividing the influencing elements of urban spatial identity resources into four categories: natural environment,built environment,historical context and actions and activities.Moreover,the network evaluation model for urban spatial identity resources is constructed based on the ANP method,which overcomes the problem of ignoring the system complexity in terms of methodology when using previous hierarchical model for evaluation,realizing methodological innovation.Finally,urban spatial data including POI,AOI,remote-sensing imagery,street view image,thermodynamic diagram,Weibo check-in data,etc.are collected through web-crawler,artificial vectorization,etc.,to build a basic database for evaluation,and the main urban area of Nanjing is used as a case to carry out verification towards the evaluation of urban spatial identity resources,and to conduct analysis and interpretation of evaluation results.The main innovations of this research are as follows: First,to improve the traditional evaluation methods by involving the complex network relationship within the system into the model.Second,to realize the full quantitative evaluation of spatial identity resource elements,proposing an evaluation method over urban spatial identity resources based on full-digitalization analysis.