Research On Linear Landscape Of Urban Viaduct Rail Transit

The unban rail transit which are developing rapidly bring about convenience for thepeople's travel.Urban viaduct rail transit emerges as a result of the development oftechnology,economy and other factors.Because of its mass body,long lines and so many regionsit passes,it is inevitable for this facility to damage the urban landscapes.However,urban viaductrail transit can create landscape corridors due to its linear characteristic,which has a great valueof landscape and potential of development.In this paper,the theory of linear landscape was usedto analyze the elements that the linear landscape of urban viaduct rail transits includes and tosummarize their features and functions.And we take Nanjing Metro as an example to explorethe methods that used in the construction of urban viaduct rail transports for linear landscapethrough the survey,questionnaire and landscape evaluation.The main conclusions are listed as following:(1)Using the combination of census and sample surveys,we investigate the presentsituation of the green,viaducts.The results indicate that there are119kinds of plants planted inthe green,which has a high ornamental value;the proportion of trees,shrubs and grass is1:0.87:1.63;the number of configuration models of green plants along the Metro line1andMetro line2are8and7respectively;the viaducts' postures are lightsome so there are noobstacles for people's sight,however,the poor vertical virescence brings damage to the naturalscenic spot to some extant; the stations' forms are reasonable but with a monotonouslandscapes,insufficient cultural landscape and no night landscape.(2)A questionnaire was compiled based on the analysis of the results.The results are listedas follow:people are satisfactory about the landscape,especially with that along the line andviaduct;they believe that it is important to set landscapes around the stations and viaducts;theybelieve the main task in the further development of landscapes around the viaducts arevirescence and expect that there will be more color on the viaducts and more night landscape.(3)That the average of SBE(Scenic Beauty Estimation Method) value of Line1and Line2are12and37.4respectively,and the latter's are lower.The order of the SBE value of variouslandscape elements is road landscape>landscape of metro Square>plant landscape>culturallandscape>building sketch landscape>water landscape>viaduct landscape>platformlandscape.The analysis on the scenic elements with SD(Semantic Differential) methods,Thepredication models involved the coordination of the station with the surroundinglandscape,richness of viaduct's color, richness of plant color,aesthetics of squarepavement,reach ability of architectural pieces,uniqueness of cultural landscape.After that, theevaluation system for the viaduct Nanjing Metro is accomplished which involvessurvey,questionnaire,SBE landscape evaluation and SD landscape elements analysis.(4)According to the landscape evaluation and the problems being in it,suggestions about the construction of linear landscape along the viaducts are put forth from the macro,meso andmicro level which listed in brief.The suggestions of reformations to the viaduct Nanjing Metroold districts,new districts and natural scenic spot are put forward.