土壌中の窒素・炭素同位体組成 –有機物の続成過程に関連して– Nitrogen and carbon isotopes in soil with special reference to the diagenesis of organic matter

この論文にアクセスする

この論文をさがす

著者

抄録

Distributions of nitrogen and carbon isotopes in terrestrial ecosystems are described based on available data and our recent findings for soil organic matters. Major processes regulating N-isotope and C-isotope ratios in biogenic substances are discussed. The biological di-nitrogen fixation and the precipitation are major sources which lower the δ<sup>15</sup>N value for forested soil organic matters. Denitrification enhances δ<sup>15</sup>N value for soil in cultivated fields. An addition of chemical fertilizer lowers <sup>15</sup>N content in soils. The permiation of soil water is an important factor controlling vertical profiles of δ<sup>15</sup>N in soil systems. Among soil organic matters, non-hydrolizable fraction seems to give unique low δ<sup>15</sup>N value, suggesting the utility of δ<sup>15</sup>N analysis in studying the nature of the fractions. δ<sup>13</sup>C of soil organic matter is significantly lower than that for marine sediments. δ<sup>13</sup>C for soil humus varies with respect to chemical forms as well as an age of soil organic matters. The variation is large in paddy fields. It is, thus, probable that δ<sup>13</sup>C is an useful parameter in studying the early epidiagenesis of soil organic matters. Based on the known δ<sup>15</sup>N-δ<sup>13</sup>C relationships, a two-source mixing model has been applied to assess sources of organic matters in coastal sediment.

収録刊行物

  • 地球化学

    地球化学 14(1), 7-15, 1980

    一般社団法人日本地球化学会

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    110008679701
  • NII書誌ID(NCID)
    AN00141280
  • 本文言語コード
    JPN
  • 資料種別
    雑誌論文
  • ISSN
    0386-4073
  • NDL 記事登録ID
    2165256
  • NDL 刊行物分類
    ME61;RB13
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-645
  • データ提供元
    CJP引用  NDL  NII-ELS  J-STAGE 
ページトップへ