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Nitrogen Loss through Anaerobic Ammonium Oxidation Coupled to Iron Reduction from Paddy Soils in a Chronosequence
Ding, Long-Jun; An, Xin-Li; Li, Shun; Zhang, Gan-Lin; Zhu, Yong-Guan
2014
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume48Issue:18Pages:10641-10647
AbstractAnaerobic ammonium oxidation coupled to iron(III) reduction (termed Feammox) with dinitrogen, nitrite, or nitrate as the end-product is a recently discovered process of nitrogen cycling. However, Feammox has not been described in paddy soils, which are rich in iron(III) oxides and subjected to intensive nitrogen fertilization. Here, evidence for Feammox in a paddy soil chronosequence with a gradient of microbially reducible iron(III) levels was obtained in Southern China using 15N-labeled ammonium-based isotopic tracing and acetylene inhibition techniques. Our study demonstrated the occurrence of Feammox in the chronosequence, and direct dinitrogen production was shown to be the dominant Feammox pathway. Within the chronosequence, three paddy soils with higher microbially reducible iron(III) levels had higher Feammox rates (ranged from 0.17 to 0.59 mg N kg(-1) d(-1)) compared to an uncultivated soil (0.04 mg N kg-1 d-1). It is estimated that a loss of 7.861 kg N ha(-1) year(-1) is associated with Feammox in the examined paddy soils. Overall, we discover that rice cultivation could enrich microbially reducible iron(III), accelerate Feammox reaction and thus fuel nitrogen loss from soils, and suggest that Feammox could be a potentially important pathway for nitrogen loss in paddy soils.
Department城市与区域生态国家重点实验室
WOS IDWOS:000341801500015
Citation statistics
Cited Times:97[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/9194
Collection城市与区域生态国家重点实验室
土壤环境科学实验室
Recommended Citation
GB/T 7714
Ding, Long-Jun,An, Xin-Li,Li, Shun,et al. Nitrogen Loss through Anaerobic Ammonium Oxidation Coupled to Iron Reduction from Paddy Soils in a Chronosequence[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2014,48(18):10641-10647.
APA Ding, Long-Jun,An, Xin-Li,Li, Shun,Zhang, Gan-Lin,&Zhu, Yong-Guan.(2014).Nitrogen Loss through Anaerobic Ammonium Oxidation Coupled to Iron Reduction from Paddy Soils in a Chronosequence.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(18),10641-10647.
MLA Ding, Long-Jun,et al."Nitrogen Loss through Anaerobic Ammonium Oxidation Coupled to Iron Reduction from Paddy Soils in a Chronosequence".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.18(2014):10641-10647.
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