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Forest hydrological and ecological study on the effects of forest type and its stand age on the quality and quantity of forest runoff water

Research Project

Project/Area Number 02454068
Research Category

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

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

IWATSUBO Goro  Fac. of Agriculture, Professor, 農学部, 教授 (00026395)

Co-Investigator(Kenkyū-buntansha) TOKUCHI Naoko  Fac. of Agric., Instructor., 農学部, 助手 (60237071)
KAWAGUCHI Hideyuki  Fac. of Agric., Instructor, 農学部, 助手 (40202030)
TAKEDA Hiroshi  Fac. of Agriculture, Associate Prof., 農学部, 助教授 (60109048)
FUKUSHIMA Yoshihiro  Fac. of Agric., Associate Prof., 農学部, 助教授 (00026402)
OOHATA Seiichi  Fac. of Agric., Associate Prof., 農学部, 助教授 (50026639)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1990: ¥2,600,000 (Direct Cost: ¥2,600,000)
KeywordsForest run-off water / Purification ability / Soil water / Upper and lower slope / Ion exchange resin / Nitrification / Denitrification / 不連続的分布 / 相乗的相互作用 / 浄化機能 / 斜面上部 / 斜面下部 / 硝酸態窒素 / アンモニア態窒素 / 森林 / 集水域 / 降水 / 流出水 / 水質 / 洪水 / 崩壊地 / 浄化作用
Research Abstract

1990: Runoff water-chemicals were studied in seven man-made Sugi forest stands of variable ages and four natural and deciduous broad-leaved forest stands at the Kyoto University Forests. Studies were conducted every 2 weeks and compared with that precipitation. NO_3-N concentration in runoff water decreased considerably compared to precipitation. About the same concentration of NH_4-N, org-N, and total-P were detected in runoff water and precipitation. As the amount of runoff water decreased to 2/3 of the precipitation, we can say that the forest purifies eutrophication substances such as nitrogen and phosphorus.
1991: As no apparent difference was detected among the runoff water-chemicals of the variable forest stands in this University Forest, our investigation efforts were concentrated into the details of forest mechanisms in regulating runoff water chemicals. Ion exchange resins were buried along the forest slope and the amount of water-chemicals which infiltrate through the soil was measured. At lower slope, the amount of chemicals detected was several times that of upper slope. Through the experiment of soil water-chemicals measurement using lysimeter, an increase of nitrate along the slope was detected from upper to lower slope. The increase of nitrate also brought about an increase of calcium and magnesium.
1992: At soil depth of 50cm in lower slope, a high concentration of nitrate was detected. To follow the fate of this nitrate nitrogen, the natural isotope abundance ratio of nitrogen was measured and denitrification in the water saturated layer was confirmed. Along a continuous slope, nitrification and base saturation in the soil changed punctually with the positive feedback interaction between biological and environmental factors.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] 徳地 直子: "森林生態系における溶存物質濃度・量の垂直的変化(I)-塩化物イオンとナトリウムイオント土壌水の垂直的移動-" 日本林学会誌. 73. 181-188 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 徳地 直子: "山地小流象における降水と渓流水の水質" 京都大学演習林報告. 63. 60-68 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 徳地 直子: "桐生試験地における井戸の水質変動について." 第102回日本林学会大会論文集. 102. 353-354 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 徳地 直子: "酸性雨と森林生態系の物質循環" 森林立地. 34. 14-19 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Naoko Tokuchi: "Vertical changes in the soil solution chemistry through the soil profiles in a coniferous forest." Geoderma. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 中島 皇: "芦生演習林内の急峻地帯における小流象の流出特性" 京都大学演習林報告. 64. 75-87 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Fuskushima,Y., Ohte,N., Suzuki,M. and Shirasawa,A.: "Differences on streamflow between five close catchment basins." Bull. Kyoto Univ. For.64. 88-101 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Nakashima,T., Fukushima,Y. and Oohata,S: "Characteristics of streamflow at a small watershed in steep slope area of Kyoto University Forest in Ashiu." Bull. Kyoto Univ. For.64. 75-87 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Oohata,S: "A study to estimate the forest biomass -A non-cutting method to use the piled up data-" Bull. Kyoto Univ. For.63. 23-36 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Tokuchi,N., Kuroda,Y. and Iwatsubo,G: "Vertical changes of water-chemicals in a forest ecosystem (I) Vertical movement of Cl^-, Na^+, and soil water in a sugi forest." J. Jpn. For. Soc.73. 135-144 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Tokuchi,N., Tsuji,A. and Iwatsubo,G: "Study on precipitation and run-off water chemistry in forested watershed." Bull. Kyoto Univ. For.63. 60-68 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Tokuchi,N., Ohte,N., Suzuki,M. and Iwatsubo,G: "Observation of the water chemistry changes of the ground water in Kiryu experimental water-shed." Trans. 102nd. Mtg. Jpn. For. Soc.353-354 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Tokuchi,N. and Iwatsubo,G: "Acid rain and nutrient cycling in forest ecosystem." Jpn. J. For. Environment. 34. 14-19 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Tokuchi,N., Takeda,H. and Iwatsubo,G: "Vertical changes in soil solution chemistry in soil profiles under coniferous forest." Geoderma. 5x. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 徳地 直子: "酸性雨と森林生態系の物質循環." 森林立地. 34. 14-19 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 中島 皇: "芦生演習林内の急峻地帯における小流域の流出特性." 京都大学演習林報告. 64. 75-87 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 福嶌 義宏: "隣合う5つの小流域群二おける降雨流出の相違。" 京都大学演習林報告. 64. 88-101 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 榎木 勉: "せき悪土壌地におけるクロマツ植栽林の林分構造." 第103回日本林学会大会論文集. 103. 461-462 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 徳地 直子: "森林表層土における土壌溶液中の主要な溶存物質の移動特性ー滋賀県竜王山の褐色森林土における事例ー" 日本林学会関西支部論文集. 2. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Naoko Tokuchi: "Vertical changes in the soil solution chemistry through the soil profiles in a coniferous forest." Geoderma. 5X. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Yoshihiro Fukushima: "Estimation of streamflow change by global warming in a glaeierーcovered high mountain area of the Nopal Himalaga," IAHS Publication. NO,205. 181-188 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 徳地 直子: "森林生態系における容存物質濃度・量の垂直的変化(I)スギ人工林における塩素イオンとナトリウムイオンと土壌水の垂直的移動" 日本林学会誌. 73. 135-144 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 徳地 直子: "桐生試験地における井戸の水質変動について" 第102回日本林学会大会論文集. 102. 353-354 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 徳地 直子: "山地小流域における降水と流出水の水質" 京大演習林報告. 63. 60-68 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Nobuto Ohte: "A numerical model for water and solute morement in forest soils and its application to CI transport in microlysimeters" LAHS publication. NO,204. 217-226 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 辻 明子: "山地小流域における降水と流出水の水質について" 京都大学演習林報告. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 岩坪 五郎 (編著): "森林生態学" 文永堂, (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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