Road Construction Patterns Based on Rural Settlements Spatial Reconstruction of Mountainous Regions in Western Sichuan, China

Making rural settlements of mountainous regions in western Sichuan as the study objects and using symbolic statistical methods, then combing Daofu County as the case study, the paper analyzed the negative impact of scattered rural settlements to road construction and other infrastructure in mountain regions of western Sichuan. The results showed that the road utilization was in state of longer road length per capita, but smaller road density and bad utilization and profit, and most rural settlements were in poverty with no road, infirmary, school and electricity net, and the scattered distribution of rural settlements was a major factor. It indicates that road construction patterns should be changed in mountainous regions of western Sichuan, the scattered rural settlements should be resettled in the range of whole county, the spatial distribution pattern of settlements should be reconstructed, and the scale of settlements and population should be enlarged in the service range of current road. On the eco-economic zoning of the Daofu county, the three road construction patterns were indicated based on rural settlements spatial reconstruction in mountainous regions of western Sichuan, patterns based on national road and central villages, patterns based on key townships, common townships and central village, and patterns based on key townships and central villages.