Abstract:
Traditional villages are predominantly located in mountainous areas prone to geohazards. Given their rich cultural heritage and complex historical environments, conducting multi-scale risk assessments is essential to meet the needs of hierarchical risk management. Taking counties, townships, and villages in southeastern Chongqing as assessment units, this study develops a multi-scale risk assessment framework for rainfall-induced geohazards in traditional villages and generates multi-level risk maps. The results reveal significant multi-scale spatial heterogeneity in geohazard risks within the study area. Specifically, risks vary markedly across the six counties; at the township scale, the 39 townships in Youyang County exhibit a spatial pattern of higher risk in the east and lower risk in the west; at the village scale, Hewan and Houxi villages demonstrate relatively high comprehensive risk levels. Assessments at the macro-scales (county and township) are effective for identifying priority control areas, while village-scale assessments clarify key protection targets and differentiated intervention priorities. These findings provide a scientific basis for graded risk management and territorial spatial planning for traditional villages.