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Dendrochronological assessment for air pollution using stumps of Cryptomeria japonica (Sugi)

Research Project

Project/Area Number 06680500
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 環境影響評価(含放射線生物学)
Research InstitutionTOYAMA MEDICAL AND PHARMACEUTICAL UNIVERSITY

Principal Investigator

KATOH Terutaka  Toyama Medical and Pharmaceutical University Faculty of Medicine, Research Associate, 医学部・公衆衛生学, 助手 (80115162)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsDendrochronology / Tree ring-width / Standardized ring index / Sugi / Cryptomeria japonica / Stump / Air pollution / Sulfur oxides / 年輪指数
Research Abstract

A total of 20 cores were collected from the stumps of Cryptomeria japonica growing in Toyama Prefecture. After polishing the cores, the ring-widths were measured to the nearest 0.01 mm using a dliding linear table (LINTAB). This instrument was interfaced with an IBM-compatible personal computer and the data were analyzed by a time series analysis program (TSAP-X). Specimens those taken by another research projects were also incorporated in this study. The results were as follows.
(1) After removing the effects of tree age and climatic conditions the impacts of air pollutants on increment growth in Cryptomeria japonica was analyzed. During the period of the late '60s to the early '70s, when serious air pollution was recorded, decreased increment growth was observed. Since the mid '70s increased increment growth in Cryptomeria japonica was observed with decreasing levels of air pollutants.
(2) The impact of three categories of air pollutants, i. e., sulfur oxides, nitrogen oxides and oxidants, on increment growth was studied by a multiple regression analysis. The levels of aulfur oxides were suggested to be the determining factor.
(3) In generally, a similar pattern in ring-width was observed with Cryptomeria japonica those growing in the plain area and the mountain area. This means that time series of the ring-width in these two areas are quite similar but large gaps are observed in some exceptional years. It is suggested that the large gap in special year has its origin in the heavy snowfall in plain area and/or unusual light snowfall in the mountain area.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Taniguchi N.: "Combined effects of air pollution on ring-width of Sugi (Cryptomeria japonica) in a sub-urban area of Central Japan." Arch. Complex Environ. Studies. 7. 59-64 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Taniguchi N.: "Proceedings of the International Workshop on Asian and Pacific Dendrochronology" Forestry and Forest Products Research Institute, 286 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Katoh T.: "Proceedings of the International Workshop on Asian and Pacific Dendrochronology" Forestry and Forest Products Research Institute, 286 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Katoh T.: "Proceedings of the Asian Symposium on Ecotechnology Toyama,^,95" Toyama National College of Technology, (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Taniguchi N: "Combined effects of air pollution on ring-width of Sugi (Cryptomeria japonica) in a sub-urban area of Central Japan" Arch. Complex Environ. Studies. 7. 59-64 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Taniguchi N: "Tree rings, From the past to the future, Proceedings of the International Workshop on Asian and Pacific Dendrochronology" Forestry and Forest Research Institute. 286 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Katoh T: "Tree rings, From the past to the future, Proceedings of the International Workshop on Asian and Pacific Dendrochronology" Forestry and Forest Research Institute. 286 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Katoh T: "Proceedings of the Asian Symposium on Ecotechnology Toyama, '95" Toyama National College of Technology. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Taniguchi N.: "Combined effects of air pollution on ring-width of Sugi(Cryptomeria japonica)in a sub-urban area of Central Japan." Arch.Complex Environ.Studies. 7. 59-64 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Taniguchi N.: "Proceedings of International Workshop on Asian and Pacific Dendrochronology" Forestry and Forest Products Research Institute, 286 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Katoh T.: "Proceedings of the International Workshop on Asian and Pacific Dendrochronology" Forestry and Forest Products Research Instirute, 286 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Katoh T.: "Proceedings of the Asian Symposium on Ecotechnology Toyama,'95" Toyama National College of Technology (in press),

    • Related Report
      1995 Annual Research Report
  • [Publications] KatohT.: "Effects of air pollution on ring width of Japanese Cedars and on the health of schoolchildren around a local emission source." Archives of Complex Environmental Studies. 6. 41-47 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Katoh T.: "Effects of air pollution on ring width of Japanese Cedars and on the health of schoolchildren around a local emission source." Archives of Complex Environmental Studies. (発表予定).

    • Related Report
      1994 Annual Research Report
  • [Publications] Taniguchi N.,Katoh T.,Kasuya M.,Kasuya M.et al.: "Recent Advances in Researches on the Combined Effects of Environmental Factors" Chuetsu,Toyama(Japan)., 618 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Katoh T.,Taniguchi N,Kozuka H.,Kasuya M.: "Tree Ring From the Past to the Future" Forestry and Forest Products Research Institute,Tsukuba(Japan).(発表予定),

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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