Abstract：In this study, we measured the potential rates of feammox, denitrification and anammox by isotope tracer technique insoil samples collected from different vegetable plots. In addition, we also analyzed theirphysicochemical characteristics, and the composition of microbial community via Miseq high-throughput sequencing technology. The results showed that the feammox rates in the vegetable soil samples were significantly higher than those from the bare land. Moreover, there exists a significant relationship between the feammox rates and Fe(III)(r = 0.736, P < 0.05), and total organic contents (r = 0.575, P < 0.05). Additionally, five predominant iron-reducing genera (Bacillus, Pseudomonas, Acidiphilium, Alicyclobacillus, Clostridium) were detected among the different vegetable soil samples, and the relative abundance of iron-reducing bacteria was higher in the vegetable soil samples (1.38%~2.19%) than in bare land soil samples (0.75%). Feammox, denitrification and anammox were estimated to account for approximately 7.3%~12.4%, 53.1%~72.3% and 18.9%~36.4% of the total nitrogen removal, respectively. Overall, the results of this study indicate that feammox could be an important pathway for nitrogen removal in the vegetable fields.
丁帮璟, 徐梦珊, 李丹丹, 罗文齐, 覃云斌, 李正魁. 不同菜地土壤的铁氨氧化脱氮过程探究[J]. 中国环境科学, 2020, 40(8): 3506-3511.
DING Bang-jing, XU Meng-shan, LI Dan-dan, LUO Wen-qi, QIN Yun-bin, LI Zheng-kui. Investigation of nitrogen removal by feammox in soils from different vegetable fields. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(8): 3506-3511.
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