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Iron plays critical roles in nitrogen retention and removal in soils and sediments

文献类型: 外文期刊

作者: Jing, Hang 1 ; Wang, Jing 3 ; Cheng, Yi 2 ; Cai, Zucong 2 ; Chang, Scott X. 8 ; Mueller, Christoph 9 ;

作者机构: 1.Inner Mongolia Agr Univ, Coll Resources & Environm, Hohhot, Peoples R China

2.Nanjing Normal Univ, Sch Geog, Nanjing, Peoples R China

3.Nanjing Forestry Univ, Coll Forestry, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing, Peoples R China

4.Nanjing Normal Univ, Key Lab Virtual Geog Environm, Minist Educ, Nanjing, Peoples R China

5.Jiangsu Ctr Collaborat Innovat Geog Informat Resou, Nanjing, Peoples R China

6.Justus Liebig Univ Giessen, Liebig Ctr Agroecol & Climate Impact Res, Giessen, Germany

7.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang, Peoples R China

8.Univ Alberta, Dept Renewable Resources, Edmonton, AB, Canada

9.Justus Liebig Univ Giessen, Inst Plant Ecol, Giessen, Germany

10.Univ Coll Dublin, Earth Inst, Sch Biol & Environm Sci, Dublin, Ireland

关键词: Nitrogen; Fe(III) oxide; Adsorption; Coprecipitation; Feammox; Nitrate-reducing Fe(II) oxidation

期刊名称:EARTH-SCIENCE REVIEWS ( 影响因子:10.0; 五年影响因子:13.2 )

ISSN: 0012-8252

年卷期: 2025 年 270 卷

页码:

收录情况: SCI

摘要: Iron (Fe) and nitrogen (N), prevalent elements in the pedosphere, exhibit distinctly different properties, while a variety of complex interactions exist between Fe and N across ecosystems. On the one hand, some interactions, such as adsorption and coprecipitation, facilitate N retention in the presence of poorly soluble Fe(III) oxides or Fe (III)-bearing clay minerals. On the other hand, Fe participates in N cycling through biochemical processes such as ammonium oxidation coupled with Fe(III) reduction, and nitrate-reducing Fe(II) oxidation. As such, the effects of Fe on N transformations are variable; Fe can promote shifts between "N-rich" and "N-lean" conditions in soils and sediments. Consequently, modifying the availability of Fe can control these transformations. This regulatory mechanism is influenced by factors such as soil pH, structure, substrate availability (Fe, N, and carbon), vegetation type, microbial community composition, and the presence of electron shuttles between N compounds and Fe(III) oxides. Each of these factors can resulting in multiple synergistic effects on Fe-N coupling, making the prediction of changes in the soil N pool challenging. This review aimed to evaluate the driving mechanisms, significance, and effects of various factors on Fe-N coupling, thereby providing a basis for understanding geochemical element cycling and informing human intervention.

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