大槌水系における有機物の挙動 –炭素・窒素同位体比からの評価–

• 和田 英太郎

  三菱化成生命科学研究所

• 水谷 広

  三菱化成生命科学研究所

• 柄沢 亨子

  三菱化成生命科学研究所

• 蒲谷 裕子

  三菱化成生命科学研究所

• 南川 雅男

  三菱化成生命科学研究所

• 米本 昌平

  三菱化成生命科学研究所

• 辻 堯

  三菱化成生命科学研究所

書誌事項

タイトル別名

• Carbon and nitrogen isotopic composition as tracers of transport of organic matter along the Otsuchi watershed
• オオツチ スイケイ ニ オケル ユウキブツ ノ キョドウ タンソ チッソ ドウ

抄録

The stable isotope ratios of biogenic carbon and nitrogen were studied along the Otsuchi watershed with emphasis on the area drained by the Unosumai River. Plant remains collected from the mountain soil exhibited the lowest values (δ¹³C=-27.5±1.0‰, δ¹⁵N=-1.8±0.8‰) in the watershed. Both isotope ratios increase along the watershed from the upper reaches to the Otsuchi Bay but a dramatic change for the river and inner bay sediments near the river mouth. A biogeochemical framework for assessing the variation of the both isotope ratios is presented. The relationship between the size of particles in the sediments and isotope ratios was studied in detail. The plant remains and organo-silty-clay minerals were emphasized to be responsible for the land-derived refractory organic matters in the bay sediments. Carbon and nitrogen isotope ratios were shown to be useful to trace the behavior of organic matter along the watershed.

収録刊行物

• 地球化学

  地球化学 18 (2), 89-98, 1985

  一般社団法人日本地球化学会

詳細情報

• CRID: 1390001205742251264
• NII論文ID: 110008679763
• NII書誌ID: AN00141280
• DOI: 10.14934/chikyukagaku.18.89
• ISSN: 21885923
• ISSN: 03864073
• NDL書誌ID: 3028472
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3028472
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可