Up to the present day, compared to freshwater lakes, more attention was paid to the ammonia-oxidizing prokaryotes in Marine and soil environments.
目前，对氨氧化原核生物的研究大多集中在海洋、土壤等环境，而对淡水生境的研究较少。
2
Until recently, the findings of anaerobic oxidizing (anammox) bacteria and ammonia-oxidizing archaea (AOA) indicate that ammonia oxidation and the prokaryotes participate in this process are complex.
近年来厌氧氨氧化细菌和氨氧化古菌的发现，提示环境中氨氧化过程及其微生物驱动者的复杂性。
3
An enrichment technique for ammoniaoxidizing bacteria was introduced in this paper.