摘要
通过对重庆芙蓉洞洞穴岩溶系统的基岩、土壤和水(表层岩溶泉水、土壤渗透水和洞穴滴水)中钡(Ba)元素含量的分析,结果表明,洞穴岩溶生态系统中Ba元素含量普遍较低,不同物质中Ba含量不同,不同类型岩溶水中Ba2+含量有较大差别。洞穴滴水和岩溶泉水的Ba/Ca值基本介于土壤和基岩的Ba/Ca值之间,且与当地外界气候变化相关。Ba元素在岩溶洞穴系统中的含量不仅能指示上覆岩-土-水迁移过程中发生分异的特征,还能反映洞穴滴水的形成信息。
Through analyzing the Ba2＋ concentrations in bedrock and soil,and monitoring the barium concentrations in spring water,soil infiltrating water and drip water out/in Furong cave,Chongqing,China,the geochemical characteristics of Barium in Furong epikarst ecosystem were studied.The concentration of Ba2＋ was low in all types of karst ecosystem out/in Furong cave.There were obvious differences among the concentration of Ba2＋ in bedrock,soil and epi-water.The ratio of barium to calcium in drip water and spring water were between the ratio in soil and bedrock,which were relevant to the local climate change.Thus the barium concentrations in epikarst ecosystem could not only indicate obvious differentiation in the process of migration among bedrock,soil and water,but also reflect the information of the drip water formation.
出处
《湖北农业科学》
北大核心
2011年第17期3510-3513,3525,共5页
Hubei Agricultural Sciences
基金
国家自然科学基金资助项目(40971122)
西南大学基本科研业务费专项资金重点资助项目(XDJK2009B016
XDJK2009C106)
