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Development of a evaluation method of environmental effect on a forested ecosystem using a biogeochemical model based on stream-water hydrochemical processes

Research Project

Project/Area Number 15310029
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental impact assessment/Environmental policy
Research InstitutionResearch Institute for Humanity and Nature

Principal Investigator

YOSHIOKA Takahito  Research Institute for Humanity and Nature, Research Department, Associate Professor, 研究部, 助教授 (50202396)

Co-Investigator(Kenkyū-buntansha) SEKINO Tatsuki  Research Institute for umanity and Nature, Research Department, Associate Professor, 研究推進センター, 助教授 (70353448)
TOKUCHI Naoko  Kyoto University, Field Science Education and Research Center, Associate Professor, フィールド科学教育研究センター, 助教授 (60237071)
KONOHIRA Eiichi  Nagoya University, Graduate of School of Environmental Studies, Associate Professor, 大学院・環境学研究科, COE特任助教授 (70345867)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥14,400,000 (Direct Cost: ¥14,400,000)
Fiscal Year 2005: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2004: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2003: ¥9,200,000 (Direct Cost: ¥9,200,000)
KeywordsForest ecosystem / Stream water quality / Simulation model / Watershed / Cyclic logging / Atmospheric nitrogen deposition / 輪伐林 / 硝酸塩イオン / 伐採の長期影響評価
Research Abstract

Studies on environmental changes in forested ecosystems caused by perturbations have been summarized. Among simulation models for biogeochemical material cyclings, we considered the applicability of the PnET model, which has been developed for northern American forests, for simulating the long-term environmental changes in forests in Japan. Observational results obtained in the forested watershed, where periodic logging has been conducted, were input to the PnET-CN model to simulate the water qualities of the streamwater. The model was well reconstructed the changes in the nitrate (NO_3^-) concentration among small catchments having different tree ages, although there were some difference in the level of concentrations between the observation and simulation. Effect of the logging on stream NO_3^- concentration can be found for 20 years after logging, coinciding with observations. It was suggested that logging rates up to 40% did not change the NO_3^- concentration level in the streamwa … More ter. The patterns of the long-term change in the woody biomass and the decrease in the leaf nitrogen content were successfully simulated. However, there were large gaps between observational and simulated values. It suggests that the careful setting of parameters included in the model should be done from viewpoints of water and nutrient conditions and the development of the rizosphere. Forest renewal and hydrologic processes should be taken into considerations to improve the simulation results.
In order to clarify the relationship between stream water qualities and watershed environmental conditions, we conducted the nationwide survey on the stream hydrochemistry in Japan. We collected stream waters from more than 1270 sites and analyzed the ionic concentrations. It was suggested that the stream NO_3^- concentration was largely governed by the atmospheric nitrogen deposition to the watershed. From the comparison with previous survey in 1950's, the stream NO_3^- concentration in Japan increased during 50 years. Geologic characteristics in the watershed affected the phosphorus (PO_4^<3->) concentration. Less

Report

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

    (13 results)

All 2005 2004

All Journal Article (13 results)

  • [Journal Article] Stream water chemistry in Japan2005

    • Author(s)
      Konohira E, J Shindo, T Yoshioka
    • Journal Title

      Nagoya University the 21st century COE program "Dynamics of the Sun-Earth-Life interactive system" Annual report 2004

      Pages: 281-290

    • NAID

      10017953404

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Inorganic nitrogen source utilization by Fagus crenata on different soil types2005

    • Author(s)
      Tateno R, N Osada, M Terai, N Tokuchi, H Takeda
    • Journal Title

      Trees-Structure and Function 19

      Pages: 471-481

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Diagrammatic arrangement method for presenting monitoring data2005

    • Author(s)
      Sekino T, T Yoshioka
    • Journal Title

      Korean Journal Limnology 38

      Pages: 76-83

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 我が国の窒素負荷量分布と全国渓流水水質の推定2005

    • Author(s)
      新藤純子, 木平英一, 吉岡崇仁, 岡本勝男, 川島博之
    • Journal Title

      環境科学会誌 18

      Pages: 455-463

    • NAID

      10016689779

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Stream water chemistry in Japan.2005

    • Author(s)
      Konohira E., J.Shindo, T.Yoshioka
    • Journal Title

      Nagoya University the 21st century COE program "Dynamics of the Sun-Earth-Life interactive system", Annual report 2004

      Pages: 281-290

    • NAID

      10017953404

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Inorganic nitrogen source utilization by Fagus crenata on different soil types.2005

    • Author(s)
      Tateno, R., N.Osada, M.Terai, N.Tokuchi, H.Takeda
    • Journal Title

      Trees-Structure and Function 19

      Pages: 477-481

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Diagrammatic arrangement method for presenting monitoring data.2005

    • Author(s)
      Sekino, T., T.Yoshioka
    • Journal Title

      Korean Journal of Limnology 38

      Pages: 76-83

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Nationwide estimation of nitrogen load and nitrogen concentration in natural stream water.2005

    • Author(s)
      Shindo, J., Konohira, E., Yoshioka, T., Okamoto, K., Kawashima H.
    • Journal Title

      Environmental Science (in Japanese with English abstract) 18

      Pages: 455-463

    • NAID

      10016689779

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Stream water chemistry in Japan.2005

    • Author(s)
      Konohira E., J.Shindo, T.Yoshioka
    • Journal Title

      Nagoya University the 21st century COE program "Dynamics of the Sun-Earth-Life interactive system" Annual report 2004

      Pages: 281-290

    • NAID

      10017953404

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Diagrammatic arrangement method for presenting monitoring data.2005

    • Author(s)
      T.Sekino, T.Yoshioka
    • Journal Title

      Korean Journal of Limnology 38

      Pages: 76-83

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Inorganic nitrogen source utilization by Fagus crenata on Different soiltypes.2005

    • Author(s)
      Tateno, R., Osada, N., Tera, M., Tokuchi N., Takeda, H.
    • Journal Title

      Trees (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Diagrammatic arrangement method for presenting monitoring data.2005

    • Author(s)
      T.Sekino, T.Yoshioka.
    • Journal Title

      Korean Journal of Limnology (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 森林集水域の機能2004

    • Author(s)
      吉岡崇仁
    • Journal Title

      水環境学会誌 27

      Pages: 567-567

    • NAID

      10013509726

    • Related Report
      2004 Annual Research Report

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

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