古気候指標としての湖沼堆積物中の全有機炭素・全窒素含有率の有効性

• 公文 富士夫

  信州大学理学部物質循環学科

書誌事項

タイトル別名

• Total Organic Carbon and Total Nitrogen Contents in Lake Sediment as a Proxies of Paleoclimate
• コ キコウ シヒョウ ト シテ ノ コショウ タイセキブツ チュウ ノ ゼン ユウキ タンソ ゼン チッソ ガンユウリツ ノ ユウコウセイ

抄録

Recent researches on total organic carbon (TOC) and total nitrogen (TN) contents in lake sediment are overviewed. TOC and TN originate from autochthonous organic products in the lake and external products derived from the land area; the former are dominant in oligotrophic lakes. It has been recognized recently that the TOC content in modern sediments from AD 1983 to 1999 has a good relationship with annual chlorophyl a amounts and average winter temperatures (from December to March) in Lake Kizaki. This result means that temperature controls the TOC content and also flux in sediment via productivity in lake water. The TOC, TN, and C/N amounts measured in a sediment core from Lake Nojiri show an excellent example of climate variability during the past 45ka, which may correspond well with δ¹⁸O change revealed in the ice core (GRIP) from Greenland. The study of lake sediments in Lake Nojiri also confirmed that the sequential changes of TOC and TN contents correspond well with the changes in pollen composition controlled by climate. These facts suggest that contents of TOC and TN, and C/N ratio in lake sediment may be a powerful tool to clarify climate change.

収録刊行物

• 第四紀研究

  第四紀研究 42 (3), 195-204, 2003

  日本第四紀学会

キーワード

• 有機炭素含有率
• 気候変動
• 野尻湖
• 生物生産性
• 湖沼堆積物

詳細情報

• CRID: 1390282681473650048
• NII論文ID: 10011070258
• NII論文ID: 10023992218
• NII書誌ID: AN0034136X
• DOI: 10.4116/jaqua.42.195
• ISSN: 18818129
• ISSN: 04182642
• ISSN: http://id.crossref.org/issn/04182642
• HANDLE: 10091/3720
• NDL書誌ID: 6610776
• Web Site: https://soar-ir.repo.nii.ac.jp/records/11908
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6610776
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可