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Study on the systematic manegement of plantation forests for water resources.

Research Project

Project/Area Number 59440013
Research Category

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

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

TSUKAMOTO Yoshinori  Tokyo University of Agriculture and Technology, 農学部, 教授 (60014924)

Co-Investigator(Kenkyū-buntansha) OHTA Takehiko  Tokyo University of Agriculture and Technology, 農学部, 助教授 (50134797)
HAIBARA Kikuo  Tokyo University of Agriculture and Technology, 農学部, 助教授 (00014960)
OKA Kazuo  Tokyo University of Agriculture and Technology, 農学部, 助教授 (70126291)
AIBA Yoshinori  Tokyo University of Agriculture and Technology, 農学部, 教授 (00014944)
TANGE Isao  Tokyo University of Agriculture and Technology, 農学部, 教授 (90012062)
Project Period (FY) 1984 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥12,500,000 (Direct Cost: ¥12,500,000)
Fiscal Year 1986: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1985: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1984: ¥8,500,000 (Direct Cost: ¥8,500,000)
KeywordsWater resources / Plantation forest / Tending works / Interception / Hillslope throughflow / Nutrient cycle / 水源かん養機能 / 森林 / 施業 / 雨水流出 / 水資源確保
Research Abstract

The research program consists of the following four subjects to accomplish the research objective. The research results are summerized as follows.
<I> ) Effect of soil characteristics and slope topography on runoff process on hillslopes: Vertical infiltration was analysed by using hydraulic head profile maps. Suction field maps were drawn to analyse the behavior of saturated throughflow. A simulating model on the effect of transpiration on discharge from a hillslope by using Richard's equation showed that transpiration on the lower half slope gives a distinct diurnal fluctuations on hillslope discharge.
<II> ) Effect of forest treatments on water yield: All small watershed experiment data available are grouped with the net radiation of every 10 kcal/ <cm^2> .year. A predicting model of annual water yield increase after forest cutting is presented in these 10 kcal regions. Interception of a matured tree is analysed by a weighing method. The effect of prunning and thinning on interception of Sugi forests is evaluated with plot experiments catching all stemflow, throughflow and canopy drops.
<III> ) Effect of tending works on nutrient cycle and water quality in a experimental watershed: Total discharge of mineral compounds from a forested watershed is highly correlated with water discharge amount, except a few years after forest cutting when cutting affects greatly compound discharge. In paleozoic soils, absorption of magnesium by Sugi trees is slow, while kalium is a quickly rotating compound in a nutrient cycle.
<IV> ) Forest manegement system favourable for water resources: A consistent explanation is attempted for so-called "forest function of uniforming streamflow" basing on the soil-vegetation-runoff relationship. Forest manegement in Hiizumo district was investigated as one of the representative cases of multi-storied forest manegment which is most favourable for water resources and soil erosion.

Report

(2 results)
  • 1986 Final Research Report Summary
  • 1985 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Tsukamoto,Y: Proceedings of 18th IUFRO world congress.Ljubliana,yugoslavia,1986. Vol.2,Div.1. 532-542 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Tsukamoto,Y: Proceedings of international symposium on toropical forest hydrology.Chengmai,Thailand,1986.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 太田猛彦: 日本林学会誌. 67(10). 383-390 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 生原喜久雄: 日本林学会試. 67(11). 464-467 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 太田猛彦: 日本林学会誌. 68(12). 490-498 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 相場芳憲: 日本林学会試. 67(8). 297-304 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 土木学会水理委員会編,塚本良則: "水工学に関する夏期研修会講義集(山地・森林からの流出)" 土木学会, 120 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Tsukamoto, Yoshinori: "Recent progress in research of forest hydrology in Japan." Proceedings of 18th IUFRO world congress, Ljubliana, Yugoslavia, 1986. Div.1 vo. <II> . 532-542 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Tsukamoto, Yoshinori: "Three experiments on canopy interception" Proceedings of international symposium on tropical forest hydrology, Chengmai, Thailand, 1986. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Ohta, Takehiko: "The behaviour of rainwater on a forested hillslope( <II> ), Lateral flow on a slope." Journal of the Japanese Forestry Society.67(8). 311-321 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Haibara, Kikuo: "Movement of potential nutrients accompanying decomposition of the A0 layer of a Sugi stand after prunning." Journal of the Japanese Forestry Society. 67(3). 73-81 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Aiba, Yoshinori: "The effect of intensive tending works on soil productivity( <IV> ), Nutrient movement in a small watershed of Sugi and Hinoki stand." Journal of the Japanese Forestry Society. 67(8). 297-304 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Tsukamoto, Y, edited by the Japanese society of civil engineering.: Japanese society of civil engineering. Runoff process on forested mountanious slopes., 120 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 日本林学会 大会論文集. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] 日本林学会 大会論文集. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] 治山. 30-5. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] 山林. 1215. (1985)

    • Related Report
      1985 Annual Research Report
  • [Publications] 水利科学. 28-3. (1985)

    • Related Report
      1985 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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