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Change of Agricultural Water Management and Its Evaluation of Influence on Hydrological and/or Water Quality Environment in the Area of Lake Shinji and Nakaumi

Research Project

Project/Area Number 09556048
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionShimane University

Principal Investigator

FUKUSHIMA Akira  Shimane University・Faculty of Life and Environment, Professor, 生物資源科学部, 教授 (90027251)

Co-Investigator(Kenkyū-buntansha) MORI Yasushi  Shimane University・Faculty of Life and Environment, Assistant Professor, 生物資源科学部, 助手 (80252899)
TAKEDA Ikuo  Shimane University・Faculty of Life and Environment, Associate Professor, 生物資源科学部, 助教授 (60227022)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥12,900,000 (Direct Cost: ¥12,900,000)
Fiscal Year 1998: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1997: ¥9,600,000 (Direct Cost: ¥9,600,000)
Keywordsrunoff model / circular irrigation / paddy field watershed / upland fields in the mountainous area / reduction of pollutant load / soft X-ray / macropore / image processing
Research Abstract

The basic purpose of this study is to develop a technique offering the hydrological and water quality information needed for agricultural water management of Hii River. It also provides an useful information for future way of water environment in this district. The results are as follows : 1. (1) Availability of a proposed method for indentification of runoff model was examined , in which was improved with respect to evaluate a set of runoff model parameter in the any significant digit designated for each parameter. (2)A runoff analysis system was developed by UNIX workstation. (3)But, it was recognized that the further improvement of runoff model and investigation of identification method was necessary for the analysis considered inundation phenomena and condition of agricultural water management. 2. (1) The pollutant fluxes of pollutants were elucidated in a paddy field watershed where a circular irrigation system was implemented. The contribution of pollutant flux in return flow to theater environment was evaluated. (2)The pollutant runoff from upland fields in the mountainous area was evaluated, The nitrogen outflows including the pollutants on rainy days were monitored in experimental lysimeters. It was concluded that saving fertilizer application using resin-coated fertilizer can contribute to the reduction of nitrogen outflows from upland fields. 3. (1) Drainage from undisturbed paddy soils, upland field soils and forest soils were analyzed using soft X-ray radiography. Drainage proceeded from macropore first then to matrix in paddy and upland field soils. On the other hand for forest soils, drainage has occurred in matrix only. Unsaturated hydraulic conductivity obtained from inverse problem showed discontinuity between saturation and near-saturation, which indicated flow region was different. Macropore was considered to channel the drainage at early stage, then matrix conducted the water flow.

Report

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

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 福島 晟・武田育郎・森 也寸志: "モデル定数の有効桁を設定した流出モデルの同定手法とその適用例" 島根大学生物資源科学部研究報告. 3号. 19-26 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takeda I., A.Fukushima and R.Tanaka: "Non-point pollutant reduction in a paddy-field watershed using a circular irrigation system" Water Research. 31. 2685-2692 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 成松克彦・武田育郎・福島 晟・森 也寸志: "被覆肥料を用いた畑地からの窒素負荷の流出削減" 農業土木学会論文集. 198号. 911-919 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 成松克彦・武田育郎・福島 晟・森 也寸志: "畑地からのリンとCOD成分の表面流出" 農業土木学会論文集. 198号. 921-927 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 森 也寸志・渡邊紹裕・丸山利輔: "フーリエ変換を用いた土壌粗間隙の構造解析" 農業土木学会論文集. 187号. 49-57 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mori, Y., T.Maruyama and T.Mitsuno: "Soft X-ray radiography of drainage patterns of structured soils" Soil Science Society of America Journal. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Fukushima, A., I.Takeda and Y.Mori: "An identification method of runoff model setting a significant digit on the model parameter and its application cases (in Japanese with English abstract)" Bull.Fac.Life Env.Sci.Shimane Univ.No.3. 19-26 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Takeda, I., A.Fukushima and Y.Mori: "Non-point pollutant reduction in a paddy-field watershed using a circular irrigaton system" Water Research. 31. 2685-2692 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Narimatsu, Y., I.Takeda, A.Fukushima and Y.Mori: "Reduction of nitrogen outflows from upland fields using resin-coated fertilizer (in Japanese with English abstract)" Trans.of JSIDRE. No.198. 911-919 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Narimatsu, Y., I.Takeda, A.Fukushima and Y.Mori: "Surface runoff of phosphorus and COD contents from upland fields (in Japanese with English abstract)" Trans.of JSIDRE. No.198. 921-927 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mori, Y., T.Watanabe and T.Maruyama: "Structural analysis on soil macropores using Fourier transform (in Japanese with English abstract)" Trans.of JSIDRE. No.187. 49-57 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mori, Y., T.Maruyama, and T.Mitsuno: "Soft X-ray radiography of drainage patterns of structured soils" Soil Science Society of America Journal. (In press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 福島 晟・武田育郎・森 也寸志: "モデル定数の有効桁を設定した流出モデルの同定手法とその適用例" 島根大学生物資源科学部研究報告. 3号. 19-26 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 成松克彦・武田育郎・福島 晟・森 也寸志: "被覆肥料を用いた畑地からの窒素負荷の流出削減" 農業土木学会論文集. 198号. 911-919 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 成松克彦・武田育郎・福島 晟・森 也寸志: "畑地からのリンとCOD成分の表面流出" 農業土木学会論文集. 198号. 921-927 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Mori,Y., T.Maruyama and T.Mitsuno: "Soft X-rax radiography of drainage patterns of structured soils" Soil Science.Society of America Journal. (In press).

    • Related Report
      1998 Annual Research Report
  • [Publications] Takeda,I., Fukushima,A., and Tanaka,R.,: "Non-point pollutant reduction in a apaddy-field watershed using a circular irrigation system" Water Research. 31・11. 2685-2692 (1997)

    • Related Report
      1997 Annual Research Report

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

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