The Impact of Urban Expressways on the Street Space of Traditional Tibetan Villages in Kham, Taking Daofu County as an Example

Abstract

Villages are integral to population gathering in the Tibetan ethnic area of Kham, and their spatial formation is influenced by various factors such as topography, river and canyon direction, etc. This study focuses on the impact of urban expressways on traditional villages there. In this study, we take 18 well-preserved traditional villages in the Kham area as examples, construct an axial model and a visual field model from the perspective of space syntax, simulate the basic data required for the algorithm, and further calculate the categorized spatial measures and star model of the streets. One-way ANOVA and Tukey’s multiple comparisons test are adopted to statistically analyze the above spatial measures. The results show that villages intersecting urban expressways have high categorized spatial measures. In addition, it is found that the sample adjacent to the expressway with the lowest mean NACH value (1.396) has the highest mean NAIN value (1.703). The sample with the highest mean NAIN (0.930) intersecting the urban expressway has the lowest mean NACH (0.743). The above approach presents certain reference values for the urbanization of traditional villages in India and Nepal, where topographic and climatic conditions are similar.