贵州纳朵洞滴水阴离子变化特征及环境响应

Characteristics and environmental response of drip water anions in Naduo cave in Guizhou province

通过2017年1月到2017年12月对贵州纳朵洞进行一个水文年动态监测,对纳朵洞洞穴滴水中的物理性指标和化学性指标的变化特征进行分析。分析得出:纳朵洞洞穴滴水的pH值、水温与洞穴温度、湿度等物理性指标均表现出明显的季节性变化,F-、Cl-、SO42-、NO3-和HCO3-等化学性指标的变化可以响应洞外气温与降雨的变化。在气温较高、降雨量较多的季节洞穴滴水的Cl–、SO42-值较低,在气温较高、降雨量较多的季节洞穴滴水的F-、NO3-、HCO3–值较高。说明了贵州纳朵洞洞穴滴水地球化学指标对外界环境变化有一定的响应,能反应外界的气温、降雨变化。

Based on dynamic monitoring data of the cave system of Naduo cave in Guizhou,and analyzed the various features of the physical and chemical indexes of Naduo cave drip water from January 2017 to December 2017.It turned out that the pH value and water temperature of drip water,air temperature,humidity and other physical indicators showed the obvious seasonal changes in Naduo cave.The changes of chemical indexes of the dripping water such as F^-,Cl^-,SO^2-4,NO^-3 and HCO^-3 can respond to the changes in temperature and rainfall outside the cave,the Cl^-,SO^2-4 values of water dripping in the cave were lower in the season of high temperature and high rainfall,while the values of F^-,NO^-3 and HCO^-3 were higher.The results show that the geochemical indicators of dripping water in the cave of Naduo cave in Guizhou have certain responses to the changes in the external environment,and can reflect the changes of temperature and rainfall outside.