Fig. 1: Location map of the study area.

a Karst Distribution in the Northern Hemisphere; b Location of the Southern China Karst; c Elevation Map of Shibing Karst; d Elevation Map of Libo-Huanjiang Karst.

a Karst Distribution in the Northern Hemisphere; b Location of the Southern China Karst; c Elevation Map of Shibing Karst; d Elevation Map of Libo-Huanjiang Karst.