Home > Research > Publications & Outputs > Mineral N stock and nitrate accumulation in the...

Electronic data

  • Jia_et_al_accepted(Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau)

    Rights statement: This is the author’s version of a work that was accepted for publication in Science of the Total Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Science of the Total Environment, 633, 2018 DOI: 10.1016/j.scitotenv.2018.03.249

    Accepted author manuscript, 1.78 MB, PDF document

    Available under license: CC BY-NC-ND: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License

Links

Text available via DOI:

View graph of relations

Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau

Research output: Contribution to journalJournal articlepeer-review

Published

Standard

Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau. / Jia, Xiaoxu; Zhu, Yuanjun; Huang, Laiming; Wei, Xiaorong; Fang, Yunting; Wu, Lianhai; Binley, Andrew; Shao, Mingan.

In: Science of the Total Environment, Vol. 633, 15.08.2018, p. 999-1006.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Jia, X, Zhu, Y, Huang, L, Wei, X, Fang, Y, Wu, L, Binley, A & Shao, M 2018, 'Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau', Science of the Total Environment, vol. 633, pp. 999-1006. https://doi.org/10.1016/j.scitotenv.2018.03.249

APA

Jia, X., Zhu, Y., Huang, L., Wei, X., Fang, Y., Wu, L., Binley, A., & Shao, M. (2018). Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau. Science of the Total Environment, 633, 999-1006. https://doi.org/10.1016/j.scitotenv.2018.03.249

Vancouver

Jia X, Zhu Y, Huang L, Wei X, Fang Y, Wu L et al. Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau. Science of the Total Environment. 2018 Aug 15;633:999-1006. https://doi.org/10.1016/j.scitotenv.2018.03.249

Author

Jia, Xiaoxu ; Zhu, Yuanjun ; Huang, Laiming ; Wei, Xiaorong ; Fang, Yunting ; Wu, Lianhai ; Binley, Andrew ; Shao, Mingan. / Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau. In: Science of the Total Environment. 2018 ; Vol. 633. pp. 999-1006.

Bibtex

@article{1a530abfb06741c795ccd5fcb5c3647f,
title = "Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau",
abstract = "Nitrogen (N) stored in deep profiles is important in assessing regional and/or global N stocks and nitrate leaching risk to groundwater. The Chinese Loess Plateau, which is characterized by significantly thick loess deposits, potentially stores immense stocks of mineral N, posing future threats to groundwater quality. In order to determine the vertical distributions of nitrate and ammonium content in the region, as well as to characterize the potential accumulation of nitrate in the deep loess profile, we study loess samples collected at five sites (Yangling, Changwu, Fuxian, An'sai and Shenmu) through a 50 to 200 m loess profile. The estimated storage of mineral N varied significantly among the five sites, ranging from 0.46 to 2.43 × 104 kg N ha−1. Ammonium exhibited fluctuations and dominated mineral N stocks within the whole profile at the sites, except for the upper 20–30 m at Yangling and Changwu. Measured nitrate content in the entire profile at Fuxian, An'sai and Shenmu is low, but significant accumulations were observed to 30–50 m depth at the other two sites. Analysis of δ15N and δ18O of nitrate indicates different causes for accumulated nitrate at these two sites. Mineralization and nitrification of manure and organic N respectively contribute nitrate to the 0–12 and 12–30 m profile at Changwu; while nitrification of NH4+ fertilizer, NO3− fertilizer and nitrification of organic N control the nitrate distribution in the 0–3, 3–7 and 7–10 m layer at Yangling, respectively. Furthermore, our analysis illustrates the low denitrification potential in the lower part of the vadose zone. The accumulated nitrate introduced by human activities is thus mainly distributed in the upper vadose zone (above 30 m), indicating, currently, a low nitrate leaching risk to groundwater due to a high storage capacity of the thick vadose zone in the region.",
keywords = "Nitrate, Ammonium, Nitrate accumulation, Critical zone, The Loess Plateau",
author = "Xiaoxu Jia and Yuanjun Zhu and Laiming Huang and Xiaorong Wei and Yunting Fang and Lianhai Wu and Andrew Binley and Mingan Shao",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Science of the Total Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Science of the Total Environment, 633, 2018 DOI: 10.1016/j.scitotenv.2018.03.249",
year = "2018",
month = aug,
day = "15",
doi = "10.1016/j.scitotenv.2018.03.249",
language = "English",
volume = "633",
pages = "999--1006",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Mineral N stock and nitrate accumulation in the 50 to 200 m profile on the Loess Plateau

AU - Jia, Xiaoxu

AU - Zhu, Yuanjun

AU - Huang, Laiming

AU - Wei, Xiaorong

AU - Fang, Yunting

AU - Wu, Lianhai

AU - Binley, Andrew

AU - Shao, Mingan

N1 - This is the author’s version of a work that was accepted for publication in Science of the Total Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Science of the Total Environment, 633, 2018 DOI: 10.1016/j.scitotenv.2018.03.249

PY - 2018/8/15

Y1 - 2018/8/15

N2 - Nitrogen (N) stored in deep profiles is important in assessing regional and/or global N stocks and nitrate leaching risk to groundwater. The Chinese Loess Plateau, which is characterized by significantly thick loess deposits, potentially stores immense stocks of mineral N, posing future threats to groundwater quality. In order to determine the vertical distributions of nitrate and ammonium content in the region, as well as to characterize the potential accumulation of nitrate in the deep loess profile, we study loess samples collected at five sites (Yangling, Changwu, Fuxian, An'sai and Shenmu) through a 50 to 200 m loess profile. The estimated storage of mineral N varied significantly among the five sites, ranging from 0.46 to 2.43 × 104 kg N ha−1. Ammonium exhibited fluctuations and dominated mineral N stocks within the whole profile at the sites, except for the upper 20–30 m at Yangling and Changwu. Measured nitrate content in the entire profile at Fuxian, An'sai and Shenmu is low, but significant accumulations were observed to 30–50 m depth at the other two sites. Analysis of δ15N and δ18O of nitrate indicates different causes for accumulated nitrate at these two sites. Mineralization and nitrification of manure and organic N respectively contribute nitrate to the 0–12 and 12–30 m profile at Changwu; while nitrification of NH4+ fertilizer, NO3− fertilizer and nitrification of organic N control the nitrate distribution in the 0–3, 3–7 and 7–10 m layer at Yangling, respectively. Furthermore, our analysis illustrates the low denitrification potential in the lower part of the vadose zone. The accumulated nitrate introduced by human activities is thus mainly distributed in the upper vadose zone (above 30 m), indicating, currently, a low nitrate leaching risk to groundwater due to a high storage capacity of the thick vadose zone in the region.

AB - Nitrogen (N) stored in deep profiles is important in assessing regional and/or global N stocks and nitrate leaching risk to groundwater. The Chinese Loess Plateau, which is characterized by significantly thick loess deposits, potentially stores immense stocks of mineral N, posing future threats to groundwater quality. In order to determine the vertical distributions of nitrate and ammonium content in the region, as well as to characterize the potential accumulation of nitrate in the deep loess profile, we study loess samples collected at five sites (Yangling, Changwu, Fuxian, An'sai and Shenmu) through a 50 to 200 m loess profile. The estimated storage of mineral N varied significantly among the five sites, ranging from 0.46 to 2.43 × 104 kg N ha−1. Ammonium exhibited fluctuations and dominated mineral N stocks within the whole profile at the sites, except for the upper 20–30 m at Yangling and Changwu. Measured nitrate content in the entire profile at Fuxian, An'sai and Shenmu is low, but significant accumulations were observed to 30–50 m depth at the other two sites. Analysis of δ15N and δ18O of nitrate indicates different causes for accumulated nitrate at these two sites. Mineralization and nitrification of manure and organic N respectively contribute nitrate to the 0–12 and 12–30 m profile at Changwu; while nitrification of NH4+ fertilizer, NO3− fertilizer and nitrification of organic N control the nitrate distribution in the 0–3, 3–7 and 7–10 m layer at Yangling, respectively. Furthermore, our analysis illustrates the low denitrification potential in the lower part of the vadose zone. The accumulated nitrate introduced by human activities is thus mainly distributed in the upper vadose zone (above 30 m), indicating, currently, a low nitrate leaching risk to groundwater due to a high storage capacity of the thick vadose zone in the region.

KW - Nitrate

KW - Ammonium

KW - Nitrate accumulation

KW - Critical zone

KW - The Loess Plateau

U2 - 10.1016/j.scitotenv.2018.03.249

DO - 10.1016/j.scitotenv.2018.03.249

M3 - Journal article

VL - 633

SP - 999

EP - 1006

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -