Multi-scale heterogeneity and habitat preference in the distribution of characteristic protection villages in China
Characteristic protection villages encapsulate the historical trajectory and long-term adaptation of the Chinese nation to the living environment,with specific distribution patterns and policy implications.Using 9381 characteristic protection villages listed in the national-level directory as research samples,this study focused on the policy-driven geographical attributes of these villages to depict the spatial heterogeneity of their distribution at multi-scales.It also examined the attributes of these villages to elucidate their preferences for habitats.Furthermore,it combined the habitat and policy aspects to reveal the influencing factors and mechanisms behind the heterogeneous distribution of these villages.The research findings are as follows:1)From the perspective of spatially stratified heterogeneity,characteristic protection villages tend to cluster more in the northern regions with lower density,exhibiting a clear zonal distribution pattern in the east-west direction.The uneven distribution becomes increasingly pronounced from the provincial,municipal,to county scales.2)From the perspective of local spatial heterogeneity,at different scales,these villages exhibit a hot spot areas in the south and cold spot areas in the north distribution pattern.However,the scale variation in spatial pattern is significant,with a finer spatial pattern emerging at the county level.3)From the perspective of habitat preference,characteristic protection villages are predominantly located in areas characterized by a subtropical humid climate,on gentle slopes and sunny slopes in low mountain areas,and along the banks of small to medium-sized rivers.They also show a preference for regions marked by economic underdevelopment,proximity to major roads,proximity to national key cultural relics protection units(within 20 km),and locations 20-80 km from central cities.4)From the perspective of causal factors and mechanisms,the distribution of these villages is primarily influenced by a combination of factors including climatic conditions,cultural resources,transportation location,and selection policies.It is the result of the joint action of policy-oriented mechanisms and habitat preference mechanisms.The research results can provide scientific reference for the revitalization decision-making of Chinese characteristic protection villages.