钙质砂页岩
钙质砂页岩-
河流冲积物、石灰岩、白云岩和钙质紫色砂页岩等发育的土壤CEC较高，而砂岩发育的土壤CEC较低，其余4种母质（岩）发育的土壤CEC介于它们之间。
CEC in the soils developed from fluvial sediment , limestone , dolomite and calcareous purple sandy shale is higher ; CEC in the soils developed from sandstone is lower ; CEC in the soils developed from the rest 4 types of parent material / rock are between them .