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Environmental Earth Sciences

, Volume 71, Issue 1, pp 217–223 | Cite as

Nitrogen and oxygen isotopic compositions of water-soluble nitrate in Taihu Lake water system, China: implication for nitrate sources and biogeochemical process

  • Zi-Xiang Chen
  • Lei Yu
  • Wei-Guo Liu
  • Michael H. W. Lam
  • Gui-Jian Liu
  • Xue-Bin YinEmail author
Original Article

Abstract

The stable isotope nitrogen-15 (15N) is a robust indicator of nitrogen (N) source, and the joint use of δ15N and δ18O–NO3 values can provide more useful information about nitrate source discrimination and N cycle process. The δ15N and δ18O–NO3 values, as well as major ion tracers, from Taihu Lake in east China were investigated to identify the primary nitrate sources and assess nitrate biogeochemical process in the present study. The results show that the nitrate concentration in West Taihu Lake (WTL) was generally higher than those in East Taihu Lake (ETL) and its upstream inflow rivers. The NO3 /Cl value combined with mapping of δ15N–NO3 and NO3 concentration suggest that the mixing process should play a major effect in WTL, and denitrification was the dominant N transformation process in WTL. A linear relationship of close to ~1: 2 was observed between δ15N–NO3 and δ18O–NO3 values in WTL, confirming the occurrence of denitrification in WTL. The δ15N–NO3 data imply that sewage and manure were the principal nitrate sources in WTL and its feeder rivers, while the nitrate in ETL might derive from soil organic nitrogen and atmospheric deposition. The δ18O–NO3 data indicate most of nitrate from microbial nitrification of organic nitrogen matter possibly make a significant contribution to the lake.

Keywords

Denitrification Dual isotopes Nitrate source Nitrification Taihu lake 

Notes

Acknowledgments

The authors would like to thank Taihu Lake special funds of Jiangsu province for its financial support (BK2007736) and Foundation of Key Laboratory of Yangtze River Water Environment, Ministry of Education, China (YRWEF201002).

References

  1. Amberger A, Schmidt HL (1987) Naturliche isotopengehalte von nitrat als indikatoren für dessen Herkunft. Geochim Cosmochim Acta 51:2699–2750CrossRefGoogle Scholar
  2. Burns DA, Kendall C (2002) Analysis of δ15N and δ18O to differentiate NO3 sources in runoff at two watersheds in the Catskill Mountains of New York. Water Resour Res 38:1051–1062CrossRefGoogle Scholar
  3. Cey EE, Rudolph DL, Aravena R, Parkin G (1999) Role of the riparian zone in controlling the distribution and fate of agriculture nitrogen near a small stream in southern Ontario. J Contam Hydrol 37:45–67CrossRefGoogle Scholar
  4. Chen Y, Qin B, Teubner K, Dokulil MT (2003) Long-term dynamics of phytoplankton assemblages: micro-cystis domination in Lake Taihu, a large shallow lake in China. J Plankton Res 25:445–453CrossRefGoogle Scholar
  5. Chen FJ, Jia GD, Chen JY (2009) Nitrate sources and watershed denitrification inferred from nitrate dual isotopes in the Beijiang river, south China. Biogeochemistry 94:163–174CrossRefGoogle Scholar
  6. Faure G (1986) Principles of isotope geology. Wiley, New YorkGoogle Scholar
  7. Fukada T, Hiscock KM, Dennis PF (2004) A dual-isotope approach to the nitrogen hydrochemistry of urban aquifer. Appl Geochem 19:709–719CrossRefGoogle Scholar
  8. Hollocher TC (1984) Sources of the oxygen atoms of nitrate in the oxidation of nitrate by Nitrobacter agilis and evidence against a P–O–N anhydride mechanism in oxidative phosphorylation. Arch Biochem Biophys 233:721–727CrossRefGoogle Scholar
  9. Karr JD, Showers WJ, Jennings GD (2003) Low-level nitrate export from confined dairy farming detected in North Carolina streams using δ15N. Agr Ecosyst Environ 95:103–110CrossRefGoogle Scholar
  10. Kendall C (1998) Tracing sources and cycling of nitrate in catchments. In: Kendall C, McDonnell JJ (eds) Isotope tracers in catchment hydrology. Elsevier, New York, pp 519–576CrossRefGoogle Scholar
  11. Kendall C, Elliott EM, Wankel SD (2008) Tracing anthropogenic inputs of nitrogen to ecosystems. In: Michener R, Lajtha K (eds) Stable isotopes in ecology and environmental science, 2nd edn. Blackwell, Oxford, pp 375–449Google Scholar
  12. Koba L, Tokuchi N, Wada E, Nakajiama T, Iwatsubo G (1997) Intermittent denitrification: the application of a 15N natural abundance method to a forested ecosystem. Geochim Cosmochim Acta 61:5043–5050CrossRefGoogle Scholar
  13. Korom SF (1992) Natural denitrification in the saturated zone: a review. Water Resour Res 28:1657–1668CrossRefGoogle Scholar
  14. Lang YC, Liu CQ, Zhao ZQ, Li SL, Han GL (2006) Geochemistry of surface and ground water in Guiyang city, China: water/rock interaction and pollution in karst hydrological system. Appl Geochem 21:887–903CrossRefGoogle Scholar
  15. Lee KS, Bong YS, Lee DH, Kim YJ, Kim KJ (2008) Tracking the sources of nitrate in the Han River watershed in Korea, using δ15N–NO3 and δ18O–NO3 values. Sci Total Environ 395:117–124CrossRefGoogle Scholar
  16. Li SL, Liu CQ, Li J, Liu XL, Benjamin C, Wang B, Wang FS (2010) Assessment of the sources of nitrate in the Changjiang river, China using a nitrogen and oxygen isotopic approach. Environ Sci Technol 44:1573–1578CrossRefGoogle Scholar
  17. Liu CQ, Li SL, Lang YC, Xiao HY (2006) Using delta N-15 and delta O-18 values to identify nitrate sources in karst ground water, Guiyang, Southwest China. Environ Sci Technol 40:6928–6933CrossRefGoogle Scholar
  18. Mariotti A, Landreau A, Simon B (1988) 15N isotope biogeochemistry and natural denitrification process in ground water: application to the chalk aquifer of northern France. Geochim Cosmochim Acta 52:1869–1878CrossRefGoogle Scholar
  19. Mengis M, Schiff SL, Harris M, English MC, Aravena R, Elgood RG, Macleanm A (1999) Multiple geochemistry and isotopic approaches for assessing ground water NO3 elimination in a riparian zone. Ground water 37:448–457CrossRefGoogle Scholar
  20. Panno SV, Kelly WR, Hackley KC, Hwang HH, Martinsek AT (2008) Sources and fate of nitrate in the Illinois river basin, Illinois. J Hydrol 359:174–188CrossRefGoogle Scholar
  21. Peterson BJ, Fry B (1987) Stable isotopes in ecosystem studies. Annu Rev Eco Syst 18:293–320CrossRefGoogle Scholar
  22. Pu P, Yan J (1998) Lake Taihu—a large shallow lake in the East China Plain. J Lake Sci 10:1–12Google Scholar
  23. Qin BQ, Xu PZ, Wu QL, Luo LC, Zhang YL (2007) Environmental issues of Lake Taihu, China. Hydrobiology 194:3–14CrossRefGoogle Scholar
  24. Shen L, Lin GF, Tan JW, Shen JH (2000) Genotoxicity of surface water samples from Meiliang Bay, Taihu Lake, Eastern China. Chemosphere 41:129–132CrossRefGoogle Scholar
  25. Silva SR, Kendall C, Wilkison DH, Ziegler AC, Chang CCY, Avanzino RJ (2000) A new method for collection of nitrate from fresh water and the analysis of nitrogen and oxygen isotope ratios. J Hydrol 228:22–36CrossRefGoogle Scholar
  26. Townsend-Small A, McCarthy MJ, Brandes JA, Yang LY, Zhang L, Gardner WS (2007) Stable isotopic composition of nitrate in Lake Taihu, China, and major inflow rivers. Hydrobiologia 194:135–140CrossRefGoogle Scholar
  27. Wassenaar LI (1995) Evaluation of the origin and fate of nitrate in the Abbotsford aquifer using the isotopes of δ15N and δ18O in NO3 . Appl Geochem 10:391–405CrossRefGoogle Scholar
  28. Widory D, Petelet-Giraud E, Negrel P, Ladouche B (2005) Tracking the source of nitrate in groundwater using coupled nitrogen and boron isotopes: a synthesis. Environ Sci Technol 39:539–548CrossRefGoogle Scholar
  29. Xu PZ, Qin BQ (2005) Water quantity and pollutant fluxes of the surrounding rivers of Lake Taihu during the hydrological year of 2001–2002. J Lake Sci 17:213–218Google Scholar
  30. Yao LX, Li GL, Tu SH, Gavin S, He ZH (2007) Salinity of animal manure and potential risk of secondary soil salinization through successive manure application. Sci Total Environ 383:106–114CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Zi-Xiang Chen
    • 1
    • 2
    • 3
    • 4
  • Lei Yu
    • 5
  • Wei-Guo Liu
    • 2
  • Michael H. W. Lam
    • 3
    • 4
  • Gui-Jian Liu
    • 1
    • 3
  • Xue-Bin Yin
    • 1
    • 3
    Email author
  1. 1.School of Earth and Space ScienceUniversity of Science and Technology of China (USTC)HefeiChina
  2. 2.State Key Laboratory of Loess and Quaternary Geology, IEE, CASXi’anChina
  3. 3.Advanced Laboratory for Environmental Research and Technology, Joint Advanced Research Center, USTC-City USuzhouChina
  4. 4.Department of Biology and ChemistryCity University of Hong KongKowloonChina
  5. 5.Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, CASNanjingChina

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