| The industrial heritage of the third-front construction is a special product during China’s war preparation period,and its built environment and spatial form map out the political and economic ideas of collectivism,planned economy and national will,and as a witness of the development history of modern defense military industry,it contains rich historical,technological,economic and aesthetic values.With the development of urban modernization and the washing of the wave of the times,the third-front relics are gradually left unattended,facing memory crises such as the decay of material space,the disappearance of history and culture,and the amnesia of renewal,etc.How to effectively protect and perpetuate the urban memory of the third-front era,maintain the collective identity of the community,and inherit the historical lineage of the city has become an urgent research issue.This paper takes the theory of urban memory as the scope of research,and selects the third-front industrial heritage in Mianyang as the typical case from the historical background of the third-front construction and the layout characteristics of key projects,builds a theoretical connection between urban memory and the third-line industrial heritage,and explores the composition characteristics and memory resources of the third-front industrial heritage under the framework of urban memory.On this basis,we construct a cognitive evaluation system of the third-front industrial heritage,summarize the cognitive rules of the third-front industrial heritage in Mianyang,and provide ideas and directions for the continuation of urban memory and the protection,development and management of the third-front industrial heritage.The research content can be divided into four parts.Firstly,the study summarizes the formation mechanism and system structure of urban memory from two dimensions:environmental psychology and environmental spatial meaning,and extracts the memory elements and characteristics of the third-front industrial heritage from three aspects: "subject-object-way" of memory.Secondly,a quantification method for urban cognition of the third-front industrial heritage is constructed from two dimensions: subject elements and object elements,and a universal quantification index table is proposed,using subject evaluation value(EV)and object cognition degree(UMC)as indicators to measure the level of urban memory.Thirdly,the empirical case of Yuejin Road was selected,and interviews were conducted with memory subjects in Mianyang through literature analysis and questionnaires to summarize the urban memory scale,including two primary memory variables of material carriers and information,29 secondary variables,and 155 tertiary variables.Based on the research data,the characteristics of subject attributes,subject values,information channels,and object cognition degree of the third-line industrial neighborhood of Yuejin Road were analyzed,and the ordered logistic model to explore the factors influencing the perception of urban memory.Fourth,the current situation and problems of memory cognition of subjects in Yuejin Road neighborhood are proposed to strengthen and enhance urban memory strategies,and provide reference for the research on the cognition and protection of urban memory of third-front industries in other regions.The study found that,(1)the subject evaluation value(EV)of the third-line industrial neighborhood of Yuejin Road in Mianyang is 0.74,which is a high level evaluation,and the secondary subject evaluation elements of retention(0.79),distinctiveness(0.83),and renewal(0.60)are high,very high,and medium level evaluations,respectively.(2)The overall urban memory level of the residents of Yuejin Road neighborhood for the object elements is medium,and the cognitive level of the material carrier memory elements of the neighborhood(0.77)is higher than that of the information memory elements(0.56).Among the material carrier variables,residents pay more attention to architectural colors,architectural forms,architectural facilities,historical buildings,and old objects,while among the information elements,slogans,building codes,artworks,and folk brands are mostly dependent on physical materials to leave a deep impression.(3)In terms of evaluating memory,the residents’ recognition of retention elements is not related to their attribute characteristics,the memory evaluation value of characteristic elements is related to the subject’s age and residence time,while the memory evaluation value of renewal elements is influenced by the subject’s age and education;in terms of object memory level,age and number of visits significantly and positively influence the level of urban memory,while residence time,type of channel,motivation of sightseeing experience and fondness of historical atmosphere The age and the number of visits significantly and positively influence the level of urban memory,the time of residence,the type of channel,the motivation of sightseeing experience and the liking of historical atmosphere are secondary positive influencing factors,while the motivation of shopping and dining negatively interferes with the perception and understanding of urban memory.(4)By analyzing the cognitive level and pattern of Yuejin Road,I propose strategies for the continuation of urban memory in terms of memory subjects,memory objects and memory channels,and make generalized suggestions for strengthening the memory of other third-front industrial heritage in China.This paper not only constructs the structure of the urban memory system of the third-front industrial heritage from the qualitative level,but also establishes the evaluation index system of the urban memory cognition of the third-front industrial heritage from the quantitative level,and explores its quantitative measurement and application based on the two,taking the Yuejin Road neighborhood in Mianyang City as an example,in order to provide a scientific basis and reference for the protection and renewal of the third-front industrial heritage and the continuation of urban memory in China. |
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