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Study on characteristics of riffle-pool structure and maintenance of the structure

Research Project

Project/Area Number 11660157
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 林学
Research InstitutionToyama Prefectural University, College of Technology

Principal Investigator

TAKAHASHI Goichiro  Toyama Prefectural University, College of Technology, Section of Agricultural Engineering, Associate Professor, 農業技術学科, 助教授 (40163258)

Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2000: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1999: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsriffle-pool structure / stream geomorphology / stream environment / nonparametric test / channel work / 魚道
Research Abstract

This research aimed for 1) clarifying characteristics of riffle-pool structure and 2) evaluating near-nature channel works and finding improving points of the channel works.
For the research of the first point, Tahakashi's classification of channel unit was applied. At first, the classification system was made clear to be rational, and method for comparing riffle-pool structure among streams was developed by using standardized unit length and unit gradient. In the comparison of riffle-pool structure, nonparametric test was confirmed to be available. With these sets of analisys procedure, characteristics of riffle-pool structure were examined in several streams. Significance tests were carried out to all combinations between four natsural streams, with the result that the Ayumanai River was determined to be different from the other three streams. The result corresponded well to a comparison based on an impression of the landscape. Another analysis in a mountain stream which had a big source of much bed material load in the middle of the research site showed that lots of bed material load did not develope pool formation enough.
Near-nature channel works represented riffle pool sequence compared with the traditional channel works which made stream morpholoby thoroughly shallow. In this context, the nea-nature channel works would contribute to conservation of the stream environment. However, the near-nature channel works was different from natural streams as far as the function and structure of the stream environment was concerned. The channel works inevitably fixed the stream bed and bank more or less. Processes of riffles and pools in natural stream depends on erosion and sedimentation in channels. In order to incorporate conservation of the stream environment, development of a new type of channel works which al low dynamic change of stream bed including erosion and sedimentaion is needed.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 高橋剛一郎: "流域保全と渓流環境保全"フォレストコンサル. 82. 23-27 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 高橋剛一郎: "魚道の評価をめぐって"応用生態工学. 3(2). 199-208 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 高橋剛一郎: "渓流環境の基本構造と保全"水利科学. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takahashi G.: "Hydrology related to Headwater Management"Fukushima Y.(ed.),IHAS,UNESCO. 198 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takahashi Goichiro: "A river from a point of fish."Kagaku. 69(12). 1036-1040 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takahashi Goichiro: "On evaluation of effectiveness of fishway."Forest Consul. 82. 23-27 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takahashi Goichiro: "Watershed management and conservation of the stream environment."Ecology and Civil Engineering. 3(2). 199-208 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takahashi Goichiro: "Basic structure and conservation of stream environment."Water Science. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takahashi Goichiro: "Watershed management and conservation of ecosystems."IHAS, UNESCO, Hydrology related to Headwater Management. 198 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 高橋剛一郎: "流域保全と渓流環境保全"フォレストコンサル. 82. 23-27 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 高橋剛一郎: "魚道の評価をめぐって"応用生態工学. 3(2). 199-208 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 高橋剛一郎: "渓流環境の基本構造と保全"水利科学. (印刷中).

    • Related Report
      2000 Annual Research Report
  • [Publications] Takahashi,G.: "Hydrology related to Headwater Management"Fukushima Y.(ed.). 198 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 高橋剛一郎: "渓流魚からみた河川-ダムによってしめ出される渓流魚たち-"科学. 69・12. 1036-1040 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 高橋剛一郎: "渓流環境保全型治山の理念と木材利用の可能性"治山シンポジウム. 37. 57-68 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 高橋剛一郎: "地域密着型の渓流工事とアセスメント"自治研とやま. 37. 46-47 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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