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Acidification Control of Forest Ecosystem Based on Critical Loads of Sulfur, Nitrogen and Hydrogen

Research Project

Project/Area Number 09480120
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境影響評価(含放射線生物学)
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

OKAZAKI Masanori  Tokyo University of Agriculture and Technology, Graduate School of Bio-Applications and Systems Engineering, Professor, 大学院・生物システム応用科学研究科, 教授 (00092479)

Co-Investigator(Kenkyū-buntansha) YAMADA Kazuhito  Pacific Consultants Co. Ltd., Researcher, 環境部, 研究員
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1999: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1998: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1997: ¥5,300,000 (Direct Cost: ¥5,300,000)
Keywordssulfur / nitrogen / hydrogen / forest ecosystem / monitoring / acidification / buffering capacity / simulation / 緩衝 / シュミュレーション
Research Abstract

From the input and output study of elements based on the monitoring in the small watershed under Hinoiki cypress, Japanese ceder, oak and red pine forest of Hachioji and Kiasaradzu, the acidification of the watershed occurred in recent years. Specially in red pine forest of Hachioji, calcium and magnesium as cations and sulfate as a anion were leached out from the watershed.
To determine critical load of acid deposition in the forest of the western part of Tokyo Metropolitan the steady state mass balance model was applied. Furthermore, exceedance of acid deposition was calculated from the difference between present acid deposition load and critical load. Sulfur was exceeded, because the critical load of sulfur is smaller than that of nitrogen in the study areas. Applying the reduction scenario to be up to 1/2 of acid deposition determined in 1997 (scenario 1) to the forested area of Tokyo Metropolitan, sulfur excess would still be present. In case of scenario 2, which reduces up to 1/4 of acid deposition determined in 1997, the sulfur excess will be over in most of the study areas. It is concluded that the reduction of sulfur should be up to 1/4 of acid deposition in 1997 to maintain the forest ecosystems in the western part of Tokyo Metropolitan.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 宗芳光、小平哲夫、岡崎正規: "上総丘陵におけるスギ・ヒノキ・コナラ林に及ぼす賛成沈着の影響に関する事例研究"環境情報科学論文集. 13. 263-268 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 岡崎正規、馬場光久: "酸性雨研究と環境試料分析-環境試料の採取・前処理・分析の実際-"愛智出版. 291 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] So, Y., Kodaira, T. and Okazaki, M.: "A case study on weffect of acid deposition on Japanese ceder, Hinoki cypress and oak trees in Kazusa Hill region of Japan"Papers on Environmental Information Science. 13. 263-268 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Okazaki, M. and Baba, M.: "Acid deposition studies and analysis of environmental samples, -Sampling, preparation and analysis of environmental samples-"Aichi-shuppan Co.. 184-205 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 完芳光,小戸哲夫,岡崎正規: "上総丘陵におけるスギ・ヒノキ・コナラ林に及ぼす酸性沈着の影響に関する事例研究"環境情報科学論文集. 13. 263-268 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岡崎正規・馬場光久: "酸性雨研究と環境試料分析ー環境試料の採取・前処理・分析の実際ー"愛智出版. 291 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Baba,M.: "Acidification in nitrogen-saturated forested catchment" Soil Sci.Plant Nutr.44. 513-525 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 山岸寿樹: "酸性雨による関東ロームの侵食に関する基礎的研究" 農業土木学会論文集. 196. 681-686 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Okazaki,M.: "Environmental Issues in Korea and Japan" The Institute for Environmental Science Kyunghee University Press, 138 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 千嶋崇志: "多摩丘陵におけるアカマツ林に及ぼす酸性沈着の影響に関する事例研究" 第11回環境情報科学論文集. 1997. 7-12 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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