Hydrochemical Variation and its Influencing Factors in Typical Karst Subterranean River in SW China Zhijun Wang, Pingheng Yang, Qiufang He, Daoxian Daoxian Yuan Yuan, Wenhao Yuan, Yinglun Kuang Institute of Karst Geology, Chinese Academy of Geological School of Geographical Sciences, Southwest University Sciences; Karst Dynamics Laboratory, Ministry of Land and Chongqing 400715, China Resources E-mail: wangwan_118@ Guilin 541004, China
Abstract—Groundwater was monitored to investigate its the world-wide water supply[1]. Karst subterranean rivers are hydrochemical variation and possible influencing factors from mainly distributed in SW China, and there are 2 836 April, 2007 to May, 2009 at the inlet (D1) and outlet (S2) of subterranean rivers with a total discharge of more than 1 Qingmuguan subterranean river in Chongqing, China. The 482m3/s[2]. Karst aquifers often have little or no soil cover and response of the subterranean river discharge to rainfall events large numbers of joints connect the surface and subsurface, was very fast and dramatic, as the water level rising suddenly such as sinkholes and interconnected fissures. So the rainwater and dropping sharply with rainfall amount in the months with and surface water can move into subterranean river quickly more rainfall. The water temperature, electrical conductivity, with little or no
