DOI:10.29111/ijlrst ISRA Impact Factor:3.35, Peer-reviewed, Open-access Journal
Research Paper Open Access
International Journal of Latest Research in Science and Technology Vol.4 Issue 3, pp 63-67,Year 2015
Correspondence should be addressed to :
Received : 19 June 2015; Accepted : 25 June 2015 ; Published : 30 June 2015
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| Article No. | 10528 |
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.
Copyright © 2015 Shigeki Harada et al. This is an open access article distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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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