Fig. 4: Traditional villages of various ethnic groups are characterized by concentrated distribution in the YRB.

The darker the color, the greater the number and density of villages. a Tujia villages are mainly concentrated in the mountainous areas in the northwestern part of the basin; b Miao villages are mainly located in the mountainous areas in the southwestern part of the basin and in the central part of the basin; c Dong villages are mainly located in the low mountainous valley areas in the southern part of the basin; and d Han villages are mainly located in the flat areas of the middle and lower reaches of the main streams.