【摘要】 以广西马山县弄拉岩溶动力系统监测站为例,通过人工及自动记录,分别对表层岩溶泉水的物理、化学指标的多日和昼夜变化规律进行了研究。在不同的植被条件下,水的物理、化学指标的多日与昼夜动态变化有不同的表现。在次生林条件下,泉水物理化学指标动态变化相对稳定:电导率较高,在599～603μs/cm之间,钙离子浓度变化在73～90mg/l之间,岩溶作用强度较大;在灌丛条件下,泉水电导率较低,为435～460μs/cm,钙离子浓度在52～83mg/l之间,多日和昼夜变化幅度较大,说明灌丛区表层岩溶泉更易受地表环境变化的影响,敏感性更强,总体上岩溶作用强度不及次生林区。更多还原

【Abstract】 Nongla, a monitoring site for typical karst dynamic system, is located at Nongla Village, Mashan County, Guangxi. The data from the site automatically recorded indicates that the karst dynamic system is highly sensitive to environment. Multiday and diurnal physicchemical variations of epikarst springs are quite different under different vegetation conditions. In secondary forest, the physicchemical variations of the springs are relatively stable with high conductivity that ranging from 599 to 603μs/cm and high content ranging from 73 to 90mg/l. Whereas, in bush wood, it is very unstable and the multiple day and single day variations are more violent with lower conductivity and content that ranging respectively from 435 to 460 μs/cm, and 52 to 83mg/l. The result shows that epikarst spring in secondary forest is more sensitive to the environment than that in bush wood. It also proves that karst processes in secondary forest is much more active than that in bush wood.更多还原