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对胶州湾和渤海沉积物分别进行室内培养实验．结果表明,在沉积物中加入营养盐后,铵氮、硅酸盐由沉积物向水体的迁移增大,铵氮的迁移在总溶解态氮的交换中起主要作用,其交换量约占总溶解态氮扩散量的７６%,硝酸盐及磷酸盐由水体向沉积物的迁移减弱．在上覆水中加入营养盐后,硝酸盐、磷酸盐由水体向沉积物的迁移增大,硝酸氮的迁移占总溶解态氮交换的主要部分,约为６２%．铵由沉积物向水体的迁移减弱,硅酸盐变成由水体向沉积物迁移．沉积物对于上覆水中营养盐的浓度具有一定的调节作用．无论在充空气或充氮气条件下,磷及硅的交换速率变化不明显,铵氮的迁移占总溶解态氮扩散量的９８%以上．充氧条件下硝酸盐由沉积物向上覆水的迁移通量较充氮气条件增加．比较两种不同的通量计算方法(积分和拟合),结果表明由两种计算方法计算的交换速率的变化趋势基本是一致的．
Experiment on indoor culture in Jiaozhou Bay and Bohai Sea sediment respectively. The results showed that the migration of ammonium nitrogen and silicate from sediments to water bodies increased after nutrient salts were added to the sediments. The migration of ammonium nitrogen played a major role in the exchange of total dissolved nitrogen, Dissolved nitrogen diffuses 76% of the amount of nitrate and phosphate migration from the water to the sediment weakened. After adding nutrients in the overlying water, the migration of nitrate and phosphate from water to sediment increased, and the migration of nitrate nitrogen accounted for 62% of the total dissolved nitrogen exchange. Migration of ammonium from the sediment to the water body is weakened, and silicate becomes the migration from the water body to the sediment. Sediments have a regulatory effect on the concentration of nutrients in the overlying water. The exchange rate of phosphorus and silicon did not change obviously under the conditions of air filling or nitrogen filling, and the migration of ammonium nitrogen accounted for more than 98% of the total dissolved nitrogen. Under the condition of oxygenation, the migration flux of nitrate from sediment to overlying water is higher than that of nitrogen. Comparing two different flux calculation methods (integration and fitting), the results show that the exchange rates calculated by the two methods are basically the same.