【摘要】 大量研究表明,酸沉降引起酸化敏感性湖泊湖水的酸化,会影响湖泊系统汞的赋存状态和相互转化。但是,对于酸沉降同时引起的湖泊SO42 的增加是否会影响湖泊汞的赋存状态和相互转化尚存在分歧。而对于非酸化敏感湖泊,受酸沉降影响湖水仍然呈现碱性的湖泊结果如何还不清楚。据此,本文综述了湖泊体系中汞的生物地球化学循环演化规律,并总结近年来的研究成果,结合我国西南地区湖泊所处的特殊地质环境及其污染和研究现状,指出对酸沉降区域碱性湖泊中汞的生物地球化学演化规律进行研究的必要性和重大意义。更多还原

【Abstract】 Many studies have shown that the acidification of lakewater resulted from acid deposition and it will affect the speciation and fate of mercury in freshwater lake systems, which are sensitive to acid deposition The effect of increase of SO42 in sediments on the cycling of mercury in water system is, however controversial The mechanism that controls mercury cycling in alkaline lakes effected by acid deposition, but nonsensitive to acid deposition are still unknown Therefore, based on recent studies in this area, we summarized the major conclusions regarding the biogeochemical cycling and evolution of mercury in freshwater lake systems Finally, we pointed out that it is necessary to study the biogeochemical cycling and evolution of mercury in alkaline freshwater lake systems in acid deposition areas in Southwest China in consideration of the special geological environment and the status of pollution in this area更多还原