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通过对芙蓉洞2006年3月—2009年2月期间泉水和洞穴滴水、池水的地球化学指标监测,结合当地的器测数据,初步认为洞穴滴水的Sr2+、Ca2+、Mg2+浓度及其比值既取决于环境降水和温度的变化,也受到上覆岩土作用的影响。芙蓉洞外山上的6#泉水Ca2+平均浓度为45.81 mg/L,洞内1#、3#滴水Ca2+的平均浓度64.59 mg/L,2#和4#池水中由于Ca2+沉积,浓度下降到24.74 mg/L,下降了大约61.7%。Mg2+和Sr2+的浓度在泉水、滴水和池水中的变化规律与Ca2+基本一致。各种水体中Cl-的浓度变化幅度较小,平均浓度为1.720.2 mg/L。岩溶水与基岩作用时间长短以及运移过程中Ca2+的前期沉积作用对各元素与离子含量变化具有重要作用。旱季Ca2+的前期沉积作用和雨季基岩的溶蚀及雨水的稀释作用主导着岩溶水中Mg/Ca与Sr/Ca的变化,这些指标能对干旱和洪涝等极端气候事件做出响应。
According to the geochemical indicators of spring water and cave drip and water in Furong Cave from March 2006 to February 2009, the concentration of Sr2 +, Ca2 + and Mg2 + in cave drip water and its ratio were determined by Changes in environmental precipitation and temperature are also affected by the effect of overburden. The average concentration of Ca2 + in 6 # spring water outside Furongdong was 45.81 mg / L, the average concentration of Ca2 + in 1 # and 3 # drip holes in the cave was 64.59 mg / L, and the concentration of Ca2 + in 2 # and 4 # pools was reduced to 24.74 mg / L, down about 61.7%. The changes of Mg2 + and Sr2 + concentrations in spring, drip and pond water were basically the same as Ca2 +. The concentration of Cl- in all kinds of water changed little, the average concentration was 1.720.2 mg / L. The duration of karst water and bedrock and the pre-deposition of Ca2 + in the process of migration play an important role in the variation of the contents of various elements and ions. The sedimentation of Ca2 + in the dry season and the erosion of bedrock during rainy season and the dilution of rainwater dominates the changes of Mg / Ca and Sr / Ca in karst water, which can respond to extreme climate events such as drought and flood.