冬期の都市森林における人為起源・生物起源二酸化炭素の寄与の評価

• 高橋 浩

• Takahashi Hiroshi A.

• 木平 英一

• Konohira Eiichi

• 檜山 哲哉

• Hiyama Tetsuya

• 南 雅代

• Minami Masayo

• 高橋 厚裕

• Takahashi Atsuhiro

• 小栗 秀之

• Oguri Hideyuki

• 中村 俊夫

• Nakamura Toshio

書誌事項

タイトル別名

• Contributions of anthropogenic and biogenic CO_2 to the atmosphere at an urban forest in winter season and their diurnal variations of vertical profiles

抄録

Diurnal variations of carbon isotopic compositions (Δ^<14>C and δ^<13>C) of atmospheric CO_2 as well as concentration in an urban area on 9 February, 1999 were measured. The carbon isotopic approach in the present study discriminated quantitative contributions from the several CO_2 sources, i.e., background, anthropogenic and biogenic components, in the urban atmosphere. The diurnal variations in vertical profiles in anthropogenic and biogenic components within the forest were estimated, and their contributions were ranged from 1.3 to 15.8% and from 1.6 to 7.8%, respectively. There was a little variation vertically at each time in the respective components, whereas anthropogenic CO_2 fluctuated largely according to the total atmospheric CO_2 variation. On the other hand, the biogenic CO_2 concentration remained relatively constant throughout the day. With regard to the vertical profiles, the biogenic contribution increases from the top to the floor of the forest with smooth gradient, while the anthropogenic contribution shows the mirror image profile against biogenic one. Both of them showed the large gradual change especially during the night.

収録刊行物

• 名古屋大学加速器質量分析計業績報告書

  名古屋大学加速器質量分析計業績報告書 11 88-99, 2000-03

  名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会

詳細情報

• CRID: 1390009224404536832
• NII論文ID: 110000946104
• NII書誌ID: AN10305282
• DOI: 10.18999/sumrua.11.88
• HANDLE: 2237/13478
• Web Site: https://nagoya.repo.nii.ac.jp/records/11605
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • CiNii Articles
• 抄録ライセンスフラグ: 使用可