eISSN:2278-5299

International Journal of Latest Research in Science and Technology

DOI:10.29111/ijlrst   ISRA Impact Factor:3.35

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MONITORINGVARIATIONS IN?15N-NO3 IN SAMPLES TAKEN IN UPSTREAM OKURA RIVER DURING SNOW MELTING PERIODS

Research Paper Open Access

International Journal of Latest Research in Science and Technology Vol.4 Issue 3, pp 63-67,Year 2015

MONITORINGVARIATIONS IN?15N-NO3 IN SAMPLES TAKEN IN UPSTREAM OKURA RIVER DURING SNOW MELTING PERIODS

Shigeki Harada,Taisuke Sato,Takuma Shiraishi, Taisuke Hashimoto

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Received : 19 June 2015; Accepted : 25 June 2015 ; Published : 30 June 2015

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Article No. 10528
Abstract

This study aims to narrow the value of δ15N-NO3in precipitation reported in wide rang, by monitoring the variations of the values during limited periods at the same point at upstream Okura River, Sendai, in northern part of Japan. Because we monitored the variations during snow melting periodsin 2013 and 2014, we could know the values ofδ15N-NO3in precipitation itself without being merged with those of soil water.The value varied 0.5-2.7 and 0.4-3.8, in 2013 and 2014, respectively. The average values were 1.8 and 1.2 in 2013 and 2014, respectively. Big discrepancy was not shown in these two years. The results obtained here may help to know the origin of a river water and then to establish environmental plans considering nutrients delivery.

Key Words   
δ15N-NO3,Precipitation, Snowmelt water, Soil Water, Okura River
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References
  1. Nagata, T. and T. Miyajima, Stable isotopes in environmental assessment of watersheds – progress towards an integral approach -, p.476, 2008, in Japanese
  2. Sigman, D.M., K.L. Casiotti, M., Andreani, C. Barford, M., Galanter and J.K., Boejlke, A bacaterial method for the nitrogen isotopic analysis of Nitrate in seawater and freshwater, Analytical Chemistry, 73, 4145-4153, 2001
  3. Harada S., T., Hashimoto, T., Shiraishi and T., Sato, Improved statistical analyses for extrapolating silicate load from observed forest silicate runoff: case study of the Okura River Catchment, Abstract Proceeding of DIPCON/ARC-2014, 32-32, 2014
  4. Harada S., T., Hashimoto, T and T., Sato, Comparison of isotope analysis method with tank model calculation method to determine snowmelt dependence of river water, Inter. I. Hydrol. Sci. Tech., submitted
  5. Tabayasi, Y, and M., Yamamuro, Mechanism of reactive nitrogen deposition on the nitrogen leaching, J. Geography (Chigaku Zasshi), 121, 411-420, 2012, in Japanese with English abstract
  6. Harada S, T. Sato and T. Hashimoto, in preparation
To cite this article

Shigeki Harada,Taisuke Sato,Takuma Shiraishi, Taisuke Hashimoto , " Monitoringvariations In?15n-no3 In Samples Taken In Upstream Okura River During Snow Melting Periods ", International Journal of Latest Research in Science and Technology . Vol. 4, Issue 3, pp 63-67 , 2015


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