Depopulation of rural areas under the backdrop of urbanization— A case study of Kangbao County, Northwest of Hebei Province Spatial construction of traditional dong settlements in Tongdao, Hunan Mountain county rural settlement landscape pattern change and spatial characteristics in rapid mountain urbanization process in Fujian province A study of spatial evolution characteristics of rural settlements and influences of landscape patterns on their distribution using GIS and RS Ecological view of traditional rural settlements: a case study in Yonghan of Guangdong Province