摘要
Strontium in karst water came from carbonate rocks, and its content is controlled by lithology of the formations and the runoff conditions of groundwater. In the area covered by pure carbonate rocks, the strontium content is only controlled by the latter based on the analyzing of strontium hydrochemical character of Banzhai subterranean stream located in Libo County, Guizhou Province. So, the Ca/Sr ratio can be used to discriminate the water circulation mode. In this paper, the 7 water sample sites be divide two 3 types, which are epi-karst water sites, conduit flow zone/saturation zone water sites and subterranean stream debouchure. The total discharge in subteranean stream debouchure is made up of other two end mumbers. Although the conduit flow zone/saturated zone water is dominated during Dec. 2009 to Feb. 2010, the contribution of epi-karst water quatity is also very important and more than 40% in total discharge.