全世界における人間活動に伴う窒素フローの推計に関する研究

• 藤森 真一郎

  京都大学大学院工学研究科都市環境工学専攻

• 河瀬 玲奈

  京都大学大学院工学研究科地球環境学堂

• 松岡 譲

  京都大学大学院工学研究科地球環境学堂

書誌事項

タイトル別名

• A STUDY ON THE ANTHROPOGENIC INTERVENTION IN THE GLOBAL NITROGEN CYCLE

抄録

We estimated the global nitrogen flows induced by human activity in 2001. We made Global Nitrogen matter Account Table (GNAT) to describe the nitrogen flows. GNAT consists of use table, supply table and trade table. To estimate the flows, we performed the calculation method of “mass balance adjustment”. This method is to estimate the flows consistently based on various international statistics. As a result, the extracting flow from environment was 203.5TgN/y. China extracted 42.1TgN/y and was the highest in the world. Second was USA and extracted 27.1TgN/y. The extracting flow per capita in china was 32.9kgN/y/cap, that was almost average in the world. On the other hand, that of in USA was 95.3kgN/y/cap and was 2.8-fold of Chinese flow. Net import in Japan was 1.38TgN/y, that was highest in the world. The net import was 0.67-fold of production of commodities in Japan. Japan depended nitrogen heavily on foreign countries. When divide the world into two; developing and developed countries, the trade flow among developed countries was major (18.9TgN/y). We cannot find differences between the value of the flow from developed countries to developing countries and that of opposing.

収録刊行物

• 環境システム研究論文集

  環境システム研究論文集 34 209-220, 2006

  公益社団法人 土木学会

キーワード

• input-output table
• nitrogen
• global change
• material balance

詳細情報

• CRID: 1390282679738094848
• NII論文ID: 130003775269
• DOI: 10.2208/proer.34.209
• ISSN: 18848125
• ISSN: 13459597
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可