| In recent years,with the rise of go on road trip,suburban rural tourism has flourished.Rural highway,as the carrier of suburban rural tourism development,needs to have the function of tourism and sightseeing on the basis of satisfying safe passage.The integration of transportation and tourism has become an inevitable development trend.However,at present,there are many problems in rural roads,such as low construction level,serious landscape convergence and imperfect supporting facilities,which lead to poor landscape visual effect of rural roads.Therefore,it is of great significance to study the visual quality evaluation and optimization strategy of rural roads in the suburbs of Xi ’an.In this paper,from the perspective of the integration of transportation and tourism,taking Xi ’an suburbs as the research area and rural roads as the research object,the research is carried out according to the logic of "literature combing-characteristic investigation-experimental design-data analysis-optimization and upgrading".Firstly,combined with previous studies,the concept explanation and research scope are defined,and the methods and technologies involved in landscape evaluation are combed;Secondly,through in-depth interviews and on-the-spot investigation,the public perception of rural highway landscape in Xi ’an suburbs was obtained.At the same time,the current situation of the survey samples(X214,Y250,X220,Y040)is analyzed.Third,select four from each of the four rural roads as experimental stimuli,and introduce the selection of experimental indicators and specific processes;Fourthly,the results of eye movement evaluation and subjective evaluation are analyzed,so as to understand the problems and characteristics of each rural road more comprehensively;Finally,combined with the results of current situation investigation and visual quality evaluation,the promotion strategies at macro and micro levels are put forward.The main conclusions of the study are as follows:(1)The visual power of scenes with high fixation times is mostly composed of two lines: curve+straight line,and the externally derived directions are mostly two sides+horizontal.Scenes all contain three or more landscape types.In terms of visual intensity,the mountains have the highest visual intensity,while the supporting facilities on both sides of the highway have the weakest visual intensity.Scenes with high saccade usually contain 4～5 color systems,and there are contrasting colors and complementary colors on the left and right sides.(2)X214is the best overall evaluation,Y250 is second only to X214 in landscape quality evaluation,Y040 is the worst overall evaluation,with low scores in five dimensions and poor overall visual quality.(3)There is a negative correlation between the range of visual field and the number and total duration of fixation.There is a positive correlation between color perception and the total duration of saccade.(4)The promotion strategies at macro and micro levels are put forward.Macroscopically,from three aspects: visual power,color and logo,this paper puts forward the strategy of improving rural highway landscape vision optimization.Microscopically,according to the characteristics of each rural highway,specific improvement strategies are put forward.X214 improves supporting facilities,Y250 connects with external landscape,Y040 pays attention to color matching,and X220 coordinates highway environment.This study evaluates the visual quality of rural highway landscape in Xi ’an suburbs,so as to guide the construction of rural highway,create a regional rural highway landscape that fits local characteristics,improve the visual quality of rural highway landscape,and make contributions to the protection of landscape visual resources on both sides of the highway. |
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