伏旱条件下表层岩溶泉水理化性质变化特征研究——以重庆金佛山为例

以重庆南川金佛山山顶表层岩溶泉——水房泉为例,分析表层岩溶泉对伏旱天气的响应过程。通过多参数自动记录仪器CT-DP300对表层岩溶泉水的物理化学变化进行研究,结果表明,在正常伏旱（2005年）条件下,表层岩溶泉水理化变化规律受气温效应和水动力效应控制,在无雨条件下,气温控制水中CO2的浓度,从而控制岩溶作用,小雨条件下,岩溶作用强度与流量变化同步。在极端干旱（2006年）条件下,当有少量降水时,土壤CO2效应占据主导位置,降水带来的CO2影响pH值和岩溶作用;当高温干旱进一步发展,土壤CO2效应消失,pH值上升,Ca2＋维持在50 mg/L,出现异常的干旱效应。

Study on the Physico-chemical Characteristics of Epikarst Spring in the Dry Climate in Summer

Taking Shuifang Spring,an epikarst spring located at Jinfo Mountain in Chongqing as an example,the response process of karst spring to the dry climate in summer was analyzed.In 2005,the physical-chemical characteristics of the epikarst spring in the dry climate in summer were mainly controlled by both hydrodynamic effect and air temperature effect.If no rain,then air temperature will control the concentration of CO2 and the karstification.If flury,karstification intensity will be synchro with discharge.In 2...