论文部分内容阅读
为探究不同表层岩溶带岩溶水系统和人类干扰方式下滇东南峰林湖盆区表层岩溶泉地球化学变化特征及其影响因素,利用CTDP300水质检测仪,对不同地质背景下的两泉域的水化学性质从月动态和降雨动态两个尺度进行了一个水文年的观测。结果表明:(1)菜花箐泉理化指标季节动态变幅较大:水温为4.6℃,电导率为302μs/cm,pH为0.66,水浊度为255.1;火把洞泉变幅相对较小:水温为3.3℃,电导率为225μs/cm,pH为0.5,水浊度9.8。(2)无雨时:菜花箐泉气温与水温、电导率、pH呈正相关关系;火把洞气温与水温呈现正相关关系,水温与电导率、pH呈现负相关关系。(3)强降雨时:菜花箐泉在降雨初期水温、电导率、水浊度均出现峰值,pH呈现低值。在降雨中后期,电导率大幅度上升,在6 h内从189μs/cm上升到405μs/cm,pH出现峰值后呈波动下降趋势。火把洞泉在降雨初期水温与电导率、pH呈正相关关系,各自呈现本期间峰值。在降雨持续10 h后,pH、电导率均呈现下降趋势。(4)弱降雨气候条件下:菜花箐和火把洞泉的理化指标变幅都较小,在降雨初期、中期和后期两泉域pH、电导率都出现稀释效应曲线。
In order to explore the characteristics of epikarst springs and their influencing factors in different types of epikarst karst water systems and human interferences in the Fenglinhu area of Southeast Yunnan, CTDP300 water quality tester was used to study the effects of water Chemical properties A hydrographic year was observed from both the monthly and the rainfall dynamics. The results showed that: (1) The seasonal dynamics of Caulis sprouts physical and chemical indicators were large: the water temperature was 4.6 ℃, the conductivity was 302μs / cm, the pH was 0.66, the water turbidity was 255.1; 3.3 ° C, electrical conductivity 225 μs / cm, pH 0.5, water turbidity 9.8. (2) There was a positive correlation between air temperature and water temperature, conductivity and pH when there was no rain. There was a positive correlation between air temperature and water temperature in torch hole, water temperature and conductivity and pH showed a negative correlation. (3) In the case of heavy rainfall: Caulis spatholobus spring peak, water temperature, water conductivity, water turbidity at the beginning of rainfall, pH value is low. During the later period of rainfall, the conductivity increased sharply and rose from 189μs / cm to 405μs / cm within 6 h. The peak value of pH showed a downward trend. At the beginning of rainfall, the water temperature and the conductivity and pH of the torch cave spring had a positive correlation, each showing the peak value during the period. After 10 hours of rainfall, pH and conductivity showed a downward trend. (4) Under the condition of weak rainfall, the physical and chemical indexes of cauliflower and torch cave springs are all smaller, and the dilution effect curves of pH and conductivity appear in the spring and middle and late spring rainfall.