Distribution features of karst water in Yunnan

Distribution features of karst water in Yunnan Province is summarized as follows.The karst aquifer is the comparatively homogeneous medium in the karst plateau plain.While it is the comparatively inhomogeneous medium on the edge of the karst plateau plain and the slopes of river valley.The aquifer characteristic of the karst catchment basin is same to the porous medium.In the catchment-runoff karst graben basin,water content is comparatively homogeneous in the upstream section but quite inhomogeneous in the karst cave and conduit in the downstream section.Furthermore,the water table of the saturated zone is nearly equivalent to the drainage spring in the identical hydrogeologic unit.Generally,the karst stratum is mainly similar to the permeable bed in the recharge area and is nearly equal to aquifer in the runoff area and real aquifer in the discharge area.The features of the karst geomorphologic landscape could open out the enrichment situation of karst water.Moreover,the enrichment effects of water-storing structure are more important.