【摘要】 沉积物－水界面是天然水体在物理、化学和生物特征等方面差异性最显著和负责水体和沉积物之间物质输送和交换的重要边界环境。对沉积物－水界面生物地球化学的定义、研究方法和它在水体微量物质循环中所起的作用、物质迁移方式、典型氧化还原敏感性元素转化反应（Ｃ、Ｏ、Ｎ）、界面扩散通量和表面扩散亚层的意义和估算等进行了讨论。更多还原

【Abstract】 Sediment-water interface is an important boundary,the greatest gradient in physics, chemistry and biology in natural water, responsible for transportation and exchange of chemical species between waters and sediments. All chemical processes occuring near the interface were involved in organic matter and micrical organic oxidation indirectly or directly in deep-water and oxic/anoxic interface environment,it’s typical biogeochemical process.Organic oxidation and the resulting redox process is the base of all chemical processes and transformation near the interface.The article discussed research methods,the contribution of interface processes to rare elements; cycling,mobile and transporting mechanisms,transformation of typical redox elements(C,N,O),and significance and calculation of diffusive fluxes and sublayers of the interface.更多还原