机构地区: 华东师范大学资源与环境科学学院教育部城市环境动态过程开放实验室
出 处: 《海洋环境科学》 2004年第2期1-4,共4页
摘 要: 以软体动物河蚬(Corbiculafluminea)为例,运用实验模拟的方法,通过对上覆水、孔隙水和沉积物的对比分析,研究了底栖动物对潮滩N迁移转化的影响。实验结果发现,河蚬主要通过排泄和生物扰动影响N在沉积物-水界面间的迁移转化。在富氧的环境下,底栖动物的活动结果使NO3 N在上覆水中有明显的持续累积效应,NH4 N在较深层孔隙水中积累,而NO2 N易在沉积物中累积。 The effect of Corbicula fluminea on the nutrient cycling in the Yangtze estuarine tidal flat was studied in the compared and simulated experiment. The findings showed that Corbicula fluminea affected mainly the transforms of nitrogen in the sediment-water interface by excretion and bioturbation. In aerobic condition, the acticity of Corbicula fluminea resulted the accumulation of nitrate in the overlying waters, ammonium in the porewater and nitrite in the sediments.
领 域: [环境科学与工程]