窒素飽和過程における渓流水硝酸イオン濃度および硝酸イオン中酸素の安定同位体比 Oxygen-Stable Isotope Ratios of Nitrate and Nitrate Concentration in Stream Water during the Course of Nitrogen Saturation

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 We measured major inorganic ions and stable isotope ratios of nitrogen and oxygen of nitrate in the stream water in the Chichibu region during the course of nitrogen saturation. Nitrate concentration showed a high west-east gradient in the study area. Stable isotope ratios of oxygen in nitrate showed clear relationships with nitrate concentration. A direct relationship was apparent in the lower range of nitrate concentrations in that the stable isotope ratio of oxygen increases as the nitrate concentration increases. On the other hand, oxygen stable isotope ratios of nitrate hardly increase in the middle to higher concentrations of nitrate. This phenomenon may suggest that the oxygen stable isotope ratios of nitrate reflect a phase of the nitrogen saturation in the forest ecosystems.

収録刊行物

  • 地學雜誌

    地學雜誌 118(6), 1247-1253, 2009-12-25

    公益社団法人 東京地学協会

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各種コード

  • NII論文ID(NAID)
    10030367707
  • NII書誌ID(NCID)
    AN00322536
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    0022135X
  • NDL 記事登録ID
    10560187
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-169
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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