基流和合的化-脱化过程共同主导了酸盐动态在被稀土采矿影响的流域
Wang Shu1,2,3,4,5, Qiuying Zhang1, Joachim Audet6
1State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012Beijing, China.
Environmental science & technology
|December 16, 2024
概括
采矿造成的污染非常严重. 地下水和土壤是主要的来源,基流和脱是影响河流中酸盐水平的主要途径和过程.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 地质化学 地质化学
背景情况:
- 采矿活动对流域的污染有很大影响.
- 在采矿区了解酸盐的运输,转化和控制是有限的.
研究的目的:
- 为了调查稀土采矿流域中的酸盐动态和驱动因素.
- 为了揭示的来源,途径和转化过程.
主要方法:
- 利用了近4年的地下水和河流观测.
- 采用基于立体测量的负载建模,分子生物学和多同位素分析.
主要成果:
- 酸盐的动态是由降水,陆地输入,沉积物供应,水文和生物过程控制的.
- 地下水 (36%) 和土壤 (25%) 是主要来源;基流贡献了66.8%的酸盐负载.
- 脱 (58%) 是一个关键的过程,受溶解有机碳和氧气的影响.
结论:
- 有效的污染控制需要减少投入,管理水文路径和转化机制.
- 强调地下水,基流和脱在采矿流域污染中的作用.
- 确定了 *Burkholderia * 作为酸盐转化中的关键微生物.
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