In this paper,the characteristic and the source of ammonia nitrogen are studied in Yayao river,which is a typical inner river in the Pearl Delta Area.

• 以佛山市雅瑶涌为研究实例,探讨了珠江三角洲河网地区围内河涌氨氮污染的特征,并对氨氮的来源进行了研究。