Research On The Urban Identity Of "Green" In Nanjing Old City—Based On Public Perception

With the gradual advancement of urban construction in China,people are paying more attention to urban identity crisis caused by rapid urbanization.This paper selects Nanjing old city and neighboring Xuanwu Lake,Zhongshan Scenic Area and Yuhuatai Scenic Area as its research scope,taking the urban identity of natural element "Green" as the research object.It studies how people feel and experience the urban identity of "Green" in actual life,adopting methods such as document study,questionnaire interview,on-the-spot investigation,etc.This paper first reviews the historical evolution process of "Green" in Nanjing,studies urban development process of Nanjing with the clue of "Green",and makes a definition of the urban identity of "Green" in Nanjing Old city: the greening network system composed of point,line and surface landscape elements,as well as the cultural connotation(natural landscape,history,literary intention and ecological benefit,etc.)it includes.Simultaneously,this study attempts to clarify the patterns and specific contents of public perception of "Green" through the way of combining theoretical research and on-the-spot investigation.Then,the public perception evaluation system is constructed to investigate the public perception intention of the urban identity of "Green" in Nanjing Old city.The conclusion is that there are respectively 11 point landscape elements and 9 line ones which public perception indexes are?.The former takes city parks that are closely related to natural,historical and cultural elements as the principal thing,such as Zhongshan Scenic Area,Chaotiangong Palace and so on.While the latter takes Ming Dynasty city wall scenic zone and the cultural axis of the Republic of China(Zhongshan North Road-Zhongshan Road-Zhongshan East Road axis)as the principal thing.According to the conclusion of the evaluation,the public perception intentional structure map of the urban identity of "Green" in Nanjing Old city is done.As a result,there are three main problems in the public perception intentional structure of the urban identity of "Green" in Nanjing Old city:(1)The landscape continuity of the line "Green" is poor and the walking space is insufficient;(2)Greening resources such as Old and Famous Trees,large units' attached green space and historical city parks are not fully used;(3)The plant species of Nanjing Old city are relatively simple,as well as the richness of the landscape view layer.Combining with the analysis of selected excellent examples,four optimization strategies are put forward:(1)Repair-Strengthen the construction of the matrix landscape and enrich the hierarchy of the landscape structure;(2)Link-Improve the Boulevards' system and connect the parks around the city;(3)Optimize-Optimize the existing shade space of trees and comprehensively enhance public perception index of the urban identity of "Green";(4)Manifest-Pay attention to the inheritance of historical context and manifest the urban identity of "Green".Finally,it discusses some extended thinking about urban identity,and draws a public guide map of the urban identity of "Green" in Nanjing Old city with the aim of creating the cultural brand of Nanjing.