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Effects of Fe oxide on N transformations in subtropical acid soils

文献类型：期刊论文

作者Jiang, Xianjun1; Xin, Xiaoping1; Li, Shiwei1; Zhou, Junchao1; Zhu, Tongbin2,3; Mueller, Christopher4,5; Cai, Zucong2; Wright, Alan L.6
刊名SCIENTIFIC REPORTS
出版日期2015-02-27
卷号5页码:8
ISSN号2045-2322
DOI10.1038/srep08615
通讯作者Jiang, XJ (reprint author), Southwest Univ, Coll Resources & Environm, 2 Tiansheng Rd, Chongqing 400715, Peoples R China.
英文摘要Subtropical ecosystems are often characterized by high N cycling rates, but net nitrification rates are often low in subtropical acid soils. NO3--N immobilization into organic N may be a contributing factor to understand the observed low net nitrification rates in these acid soils. The effects of Fe oxide and organic matter on soil N transformations were evaluated using a N-15 tracing study. Soil net nitrification was low for highly acidic yellow soil (Ferralsols), but gross ammonia oxidation was 7 times higher than net nitrification. In weakly acidic purple soil (Cambisols), net nitrification was 8 times higher than in Ferralsols. The addition of 5% Fe oxide to Cambisols, reduced the net nitrification rate to a negative rate, while NO3--N immobilization rate increased 8 fold. NO3--N immobilization was also observed in Ferralsols which contained high Fe oxides levels. A possible mechanism for these reactions could be stimulation of NO3--N immobilization by Fe oxide which promoted the abiotic formation of nitrogenous polymers, suggesting that the absence of net nitrification in some highly acid soils may be due to high rates of NO3--N immobilization caused by high Fe oxide content rather than a low pH.
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资助项目Natural Science Foundation of China[41271267]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000350294200005
出版者NATURE PUBLISHING GROUP
源URL[http://119.78.100.138/handle/2HOD01W0/1478]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Jiang, Xianjun
作者单位1.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China
2.Nanjing Normal Univ, Sch Geol Sci, Nanjing 210047, Jiangsu, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China
4.Univ Giessen, Dept Plant Ecol IFZ, D-35392 Giessen, Germany
5.Univ Coll Dublin, Sch Biol & Environm Sci, Dublin, Ireland
6.Univ Florida, Everglades Res & Educ Ctr, Belle Glade, FL 33430 USA
推荐引用方式
GB/T 7714		 Jiang, Xianjun,Xin, Xiaoping,Li, Shiwei,et al. Effects of Fe oxide on N transformations in subtropical acid soils[J]. SCIENTIFIC REPORTS,2015,5:8.
APA Jiang, Xianjun.,Xin, Xiaoping.,Li, Shiwei.,Zhou, Junchao.,Zhu, Tongbin.,...&Wright, Alan L..(2015).Effects of Fe oxide on N transformations in subtropical acid soils.SCIENTIFIC REPORTS,5,8.
MLA Jiang, Xianjun,et al."Effects of Fe oxide on N transformations in subtropical acid soils".SCIENTIFIC REPORTS 5(2015):8.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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