In differen grain size sediments, the absolute contents of different transferable forms of nitrogen are the highest in fine sediments and the lowest in coarse sediments.

• 对于不同粒级的沉积物来说，细粒级沉积物中的可转化不同形态氮的绝对含量最高，粗粒级沉积物中不同形态氮的绝对含量最低；