Fig. 1. DEM of Yao'an County, Yunnan Province

Fig. 2. Map of peak area in the study area

Fig. 3. s(k)value varies with clustering number k

Fig. 4. SSE calculated by the two methods varies with clustering number k

Fig. 5. ARI calculated by the two methods varies with clustering number k

Fig. 6. s(k) value varies with iterations based on a clustering number k

Fig. 7. Map of slope position automatic classification

Fig. 8. Overlay map of slope position distribution and topographic contour

Fig. 9. Overlay map of slope position distribution and planned wind farms in Yao'an County

Fig. 10. Slope position distribution of wind farm 6 based on different suitable windows