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Mechanism of the declining process of forest caused by the deposition of acid fog on forest canopies and the regeneration of the forest.

Research Project

Project/Area Number 15201008
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental impact assessment/Environmental policy
Research InstitutionKanagawa University

Principal Investigator

IGAWA Manabu  Kanagawa University, Department of Engineering, Professor, 工学部, 教授 (70120962)

Co-Investigator(Kenkyū-buntansha) SAKURAI Naoki  Hiroshima University, Faculty of Integrated Arts and Science, Professor, 総合科学部, 教授 (90136010)
Project Period (FY) 2003 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥33,930,000 (Direct Cost: ¥26,100,000、Indirect Cost: ¥7,830,000)
Fiscal Year 2006: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2005: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2004: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2003: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
KeywordsFog / Rain / Nitric acid / Throughfall / Fir / Forest decline / Calcium / Boron / 酸性ガス / 気孔
Research Abstract

In the mountain slope of Mt.Oyama, fog is frequently formed and pH of fogwater is low for nitric acid formed from NOx. The concentration of fog components becomes high when LWC is low, and acid fog events with fog water pH lower than 3.5 occurs for about 20% of fog duration there every year. It has been observed that the throughfall amount increased with the altitude for the contribution of fog, and the fog deposition may be dominated by the fog formation frequency and the deposition rate of fog droplets depending on the wind velocity. Deposited hydrogen ion via fog droplets is exchanged with metal ions in the cells in the leaves, and the concentrations of metal ions, calcium, magnesium, and potassium ions, in the throughfall is large for the leaching. In order to clarify the influence of acid fog on fir and beech, their seedlings were treated with simulated acid fog (SAF) at pH 3 and pH 5 prepared with a mixed solution of nitric acid, ammonium sulfate, sodium chloride with a molar ratio of 2:1:1 in a mobile fog chamber. The growth of the seedlings treated with the SAF at pH 3 had been reduced in plant height, stem diameter, the number of leaves, and dry matter production. Furthermore, the exposure to the SAF at pH 3 during growth phase induced early falling of leaves, and the falling rate were nearly 2 times greater than that at control. The laboratory experiment of the application of the simulated acid fog on their leaves also showed a large leaching of metal ions, and the leaching amount increased with the decreasing pH of the simulated fog solution. Not only the field observation but also laboratory experiments show the large effect of acid depositions on the trees.

Report

(5 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (21 results)

All 2006 2005 2004 2003 Other

All Journal Article (17 results) Publications (4 results)

  • [Journal Article] Scavenging effect of precipitation on volatile organic compounds in ambient atmosphere2006

    • Author(s)
      E.Sato, K.Matsumoto, H.Okochi, M.Igawa
    • Journal Title

      Bull. Chem. Soc., Jpn. 79

      Pages: 1231-1233

    • NAID

      10018210925

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Scavenging effect of precipitation on volatile organic compounds in ambient atmosphere2006

    • Author(s)
      Emi Sato, Kiyoshi Matsumoto, Hiroshi Okochi, Manabu Igawa
    • Journal Title

      Bull. Chem. Soc., Jpn. 79

      Pages: 1231-1233

    • NAID

      10018210925

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Enhanced dissolution of volatile organic compounds into urban dew water collected in Yokohama, Japan2005

    • Author(s)
      H.Okochi, M.Kataniwa, D.Sugimoto, M.Igawa
    • Journal Title

      Atmos. Environ. 39

      Pages: 6027-6036

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Dominant factors controlling concentrations of aldehydes in rain, fog, dew water, and in the gas phase2005

    • Author(s)
      K.Matsumoto, S.Kawai, M.Igawa
    • Journal Title

      Atmos. Environ. 39

      Pages: 7321-7329

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Enhanced dissolution of volatile organic compounds into urban dew water collected in Yokohama, Japan2005

    • Author(s)
      H.Okochi, M.Kataniwa, D.Sugimoto, M.Igawa
    • Journal Title

      Atmospheric Environment 39

      Pages: 6027-6036

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Dominant factors controlling concentrations of aldehydes in rain, fog, dew water, and in the gas phase2005

    • Author(s)
      K.Matsumoto, S.Kawai, M.Igawa
    • Journal Title

      Atmospheric Environment 39

      Pages: 7321-7329

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The enhanced dissolution of some chlorinated hydrocarbons and monocyclic aromatic hydrocarbons in rainwater collected in Yokohama, Japan2004

    • Author(s)
      H.Okochi, D.Sugimoto, M.Igawa
    • Journal Title

      Atmos. Environ. 38巻

      Pages: 4403-4414

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Characteristics of water-soluble components of atmospheric aerosols in Yokohama and Mt. Oyama, Japan from 1990 to 20012004

    • Author(s)
      M.Takeuchi, H.Okochi, M.Igawa
    • Journal Title

      Atmos. Environ. 38巻

      Pages: 4701-4708

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Characteristics of water-soluble components of atmospheric aerosols in Yokohama and Mt. Oyama, Japan from 1990 to 20012004

    • Author(s)
      M.Takeuchi, H.Okochi, M.Igawa
    • Journal Title

      Atmos. Environ. 38

      Pages: 4701-4708

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The enhanced dissolution of some chlorinated hydrocarbons and monocyclic aromatic hydrocarbons in rainwater collected in Yokohama, Japan2004

    • Author(s)
      H.Okochi, D.Sugimoto, M.Igawa
    • Journal Title

      Atmos.Environ. 38

      Pages: 4403-4414

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Characteristics of water-soluble components of atmospheric aerosols in Yokohama and Mt.Oyama, Japan from 1990 to 20012004

    • Author(s)
      M.Takeuchi, H.Okochi, M.Igawa
    • Journal Title

      Atmos.Environ. 38

      Pages: 4701-4708

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Molecular cloning of two exo-b-glucanases and their in vivo substrates in the cell walls of lily pollen tubes.2004

    • Author(s)
      H.Takeda, T.Kotake, N.Nakagawa, N.Sakurai, D.J.Nevins
    • Journal Title

      Plant Cell Physiol. 45

      Pages: 436-444

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effects of Water Loss of `Fuyu` Persimmon Fruit on Molecular Weights of Mesocarp Cell Wall Polysaccharides and Fruit Softening.2004

    • Author(s)
      Y.Tsuchida, N.Sakurai, K.Morinaga, Y.Koshita, T.Asakura
    • Journal Title

      J.Japanese Soc.Hort.Sci. 73

      Pages: 460-468

    • NAID

      110001803557

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 総説 アポプラストと植物栄養-無機元素を中心として- 1.細胞壁の構造2004

    • Author(s)
      桜井直樹
    • Journal Title

      土壌肥料学会誌 75

      Pages: 117-124

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Deposition of coarse soil particles and ambient gaseous components dominating dew water chemistry2003

    • Author(s)
      M.Takeuchi, H.Okochi, M.Igawa
    • Journal Title

      J. Geophys. Res. 108巻

      Pages: 4319-4023

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Deposition of coarse soil particles and ambient gaseous components dominating dew water chemistry2003

    • Author(s)
      M.Takeuchi, H.Okochi, M.Igawa
    • Journal Title

      J. Geophys. Res. 108

      Pages: 4319-4023

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] The enhanced dissolution of some chlorinated hydrocarbons and monocyclic aromatic hydrocarbons in rainwater collected in Yokohama, Japan2003

    • Author(s)
      H.Okochi, D.Sugimoto, M.Igawa
    • Journal Title

      Atmos. Environ. 38

      Pages: 4403-4414

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Publications] M.Takeuchi, H.Okochi, M.Igawa: "The deposition of coarse soil particles and the ambient gaseous components dominates dewwater chemistry."J.Geophys.Res.. 108巻. 4319-4323 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Takeda, T.Kotake, N.Nakagawa, N.Sakurai D.J.Nevins: "Expression and function of cell wall-bound cationic peroxidase in asparagus somatic embryogenesis."Plant Physiol.. 131巻. 1765-1774 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Tsuchida, N.Sakurai, K.Morinaga, Y.Koshita, T.Asakura: "Effects of water loss and for 'Fuyu' persimmon fruit on mesocarp cell wall composition fruit softening."J.Japanese Soc.Hort.Sci.. 72巻. 517-524 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Takeda, T.Kotake, N.Nakagawa, N.Sakurai, D.J.Nevins: "Molecular cloning of two exo-b-glucanases and their in vivo sub strates in the cell walls of lily pollen tubes."Plant Cell Physiol.. (in press).

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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