IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Soil N retention and nitrateleaching in three types of dunesin the Mu Us desert of China
Jin,Z(Jin,Zhao)[1]; Zhu,YJ(Zhu,Yajuan)[2]; Li,XR(Li,Xiangru)[1]; Dong,YS(Dong,Yueshe)[3]; An,ZS(An,Zhisheng)[1]
Source PublicationScientific Reports
AbstractA large reservoir of soil nitrate in desert subsoil zones has been demonstrated in previous studies; however, information on the subsoil nitrate reservoir and its distribution characteristics in the deserts of China is still limited. This study investigated the distribution patterns of soil total nitrogen (N), nitrate, ammonium, and stable isotopic ratios of 15N (δ15N) in shallow (1 m) and subsoil (5 m) profiles in three types of dunes in the Mu Us desert of China. We found that soil N retention of the fixed and semi-fixed dunes followed a progressive nutrient depletion pattern in shallow soil profiles, whereas the subsoil nitrate of the fixed, semi-fixed and mobile dunes maintained a conservative accumulation pattern. The results indicate that the subsoil of the Mu Us desert may act as a reservoir of available nitrate. Furthermore, a soil δ15N analysis indicate that the nitrate content of the fixed dune is likely derived from soil nitrification, whereas the nitrate content in the mobile dune is derived from atmospheric nitrate deposition. Within the context of looming climate change and intensifying human activities, the subsoil nitrate content in the deserts of northern China could become mobilized and increase environmental risks to groundwater.
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Document Type期刊论文
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China;
2.Institute of Desertifcation Studies, Chinese Academy of Forestry, Beijing 100091, China;
3.Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
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GB/T 7714
Jin,Z,Zhu,YJ,Li,XR,et al. Soil N retention and nitrateleaching in three types of dunesin the Mu Us desert of China[J]. Scientific Reports,2015,5:14222.
APA Jin,Z,Zhu,YJ,Li,XR,Dong,YS,&An,ZS.(2015).Soil N retention and nitrateleaching in three types of dunesin the Mu Us desert of China.Scientific Reports,5,14222.
MLA Jin,Z,et al."Soil N retention and nitrateleaching in three types of dunesin the Mu Us desert of China".Scientific Reports 5(2015):14222.
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