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Lake budgetary study on nutrients in water and sediment : Long-term change in sediment nutrients, nutrient budget, and modeling of sediments

Research Project

Project/Area Number 17360253
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Civil and environmental engineering
Research InstitutionUniversity of Tsukuba

Principal Investigator

FUKUSHIMA Takehiko  University of Tsukuba, Graduate Schoo of and Environmental Sciences, Professor (90124354)

Co-Investigator(Kenkyū-buntansha) ONDA Yuichi  University of Tsukuba, Gradate School of Life and Envirinmental Scienmental Sciencea, Associate Professor (00221862)
IMAI Akio  Water Environment Reseaech Divisiom, National Institute for Environmental Studies, Section Chief (40203286)
OZAKI Noriatsu  Hiroshima University, Graduate School of Engineering, Associate professor (50294541)
Project Period (FY) 2005 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥15,130,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥630,000)
Fiscal Year 2007: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2006: ¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 2005: ¥7,400,000 (Direct Cost: ¥7,400,000)
Keywordssediments / nutrients / lake / budget / long-term change / modeling / モデル
Research Abstract

Water quality has not improved in many lakes in Japan, regardless of the apparent inflow load reduction; thus, sediment-water exchange of nutrients was suspected to be the reason, but its long-term influence on lake nutrient dynamics has not clarified. Sediment cores were taken in Lakes Kasumigaura, Suwa, Kizaki and Shinji several times during 2005-2007; then, vertical profiles of nutrients (P, N, C), PAHs, Pb-210_ex, Cs-137, etc. were determined to estimate the changes in mass sedimentation rates and nutrient accumulation during several decades and nutrient budget was calculated.
1. Mass sedimentation rates were higher at inflow river mouths in the lakes and several peaks of sedimentation rates were observed during heavy rainfall events.
2. In Lake Kasumigaura, release of several of TP contents in sediments could account for TP release rates estimated by laboratory experiment and increase of lake water TP concentration in summer; the decrease in sediment TP concentration was observed near river mouth, but not observed at the center of the lake, probably due to redeposit.
3. Apparent decrease of TP contents in sediments, which could nearly account for the increase in lake water TP during summer, was observed in Lake Suwa.
4. The TP accumulation in sediments for more than 20 years corresponded nearly to the sum residuals of TP budget in Lakes Kasumigaura and Suwa if we could estimate the accurate depositional area. Nutrient sedimentation rates were overestimated for the difference in TP vertical profiles between 2003 and 2007, probably due to low resolution of sediment dating.
5. PAHs vertical profiles were also determined for the sediments to discuss the long-them change in change in relation to watershed development. The recent increase in turbidity in Lake Kasumigaura was analyzed from the view of the change in physical properties of sediments.

Report

(4 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (21 results)

All 2008 2007 2006 2005

All Journal Article (17 results) (of which Peer Reviewed: 3 results) Presentation (4 results)

  • [Journal Article] Changes in sedimentation rates and phosphorus in sedi-ments in last 30 years in Japanese shallow lakes2008

    • Author(s)
      K. Kamiya, T. Fukashima, Y. Onda, K. Matsushige and S. Mizugaki
    • Journal Title

      Verh. Internat. Verein. Limnol

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Land use/cover changes and its drivers : A case in the watershed of Lake Kasumigaura, Japan2007

    • Author(s)
      T. Fukushima, M. Takahashi, B. Matsushita and Y. Okanishi
    • Journal Title

      Landscape and Ecological Engineering 3

      Pages: 21-31

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] A modeling approach to the effect of long-term climate change on lake water quality and biota2007

    • Author(s)
      E. Komatsu, T. Fukushima and H. Harasawa
    • Journal Title

      Ecol. Model 209

      Pages: 351-366

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Charasterizing the changes in landscape structure in the Lake Kasumigaura Basin, Japan using a high-quality GIS dataset.2007

    • Author(s)
      B. Matsushita, M. Xu and T. fukushima
    • Journal Title

      Landscape and Urban Planning 78

      Pages: 241-250

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Land/use/coser change and its drivers: A case in the watershed of Lake Kasumigaura2007

    • Author(s)
      T. Fukushima, M. Takahashi, B. Matsusguta and Y. Okanishi
    • Journal Title

      Landscape and Ecological Engineering 3

      Pages: 21-31

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A modeling approach to ealiate the effect of long-term climate change on lake water quality and biota2007

    • Author(s)
      E. Komatsu, T. Fukushima and H. Harasawa
    • Journal Title

      Ecological Modelling 209

      Pages: 351-366

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Turbidity increase and resuspension in Lake Kasumigaura2006

    • Author(s)
      T. Seki, Fukushima, A. Imai and K. Matsushuge
    • Journal Title

      J JSCE 811

      Pages: 149-161

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Modeling of P-dynamics and algal growth in a stratified reservoir-mechanisma of the P-cycle and interactions between water and sediment2006

    • Author(s)
      E. Komatsu, T. Fukushima and H. Shiraishi
    • Journal Title

      Ecol. Model 197

      Pages: 331-349

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Runoff and loads of nutrients and heavy metals from an urbanized area2006

    • Author(s)
      H. Sirasuma, T. Fukushima, K. Matsushige, A. Imai and N. Ozaki
    • Journal Title

      Wat. Sci. Tech 53-2

      Pages: 203-213

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Charaterzing the changes in landscape structure in the Lake Kasumegaura Basin, Jaoan using a hing-quality GIS dataset2006

    • Author(s)
      B. Matyshita, M. Xu and T. Fukushima
    • Journal Title

      Landscape and Urban Planning 78

      Pages: 241-250

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Modeling of P-dynamics and algal growth in a stratified reservoir - mechanisms of the P-cycle and interactions between water and sediment2006

    • Author(s)
      E.Komatsu, T.Fukushima, H.Shiraishi
    • Journal Title

      Ecological Modelling 197

      Pages: 331-349

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Runoff and loads of nutrients and heavy metals from an urbanized area.2006

    • Author(s)
      H.Shirasuna, T.Fukushima, K.Matsushige, A.Imai, N.Ozaki
    • Journal Title

      Wat. Sci. Tech. 53-2

      Pages: 203-213

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 霞ヶ浦の濁度上昇と底泥巻き上げ現象2006

    • Author(s)
      関智弥, 福島武彦, 今井章雄, 松重一夫
    • Journal Title

      土木学会論文集 811/VII-38

      Pages: 149-161

    • NAID

      10016737829

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Long-term changs in profiles of sediments and nutrient budget in Lakes Kasumigaura and Suwa2005

    • Author(s)
      T. Fukushima, S. Kawamura, Y. Onda, A. Imai and K. Matsushige
    • Journal Title

      JSWE 28

      Pages: 313-319

    • NAID

      10015722196

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Why has Lake Kasumigura become turbid2005

    • Author(s)
      T. Fukushima, S. Kawamura, T. Seki, Y. Onda, A. Imai and K. Matsushig
    • Journal Title

      Verh. Internat. Verein. Limnol 29

      Pages: 732-737

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 霞ヶ浦,諏訪湖における底質長期変化と栄養塩収支2005

    • Author(s)
      福島武彦, 川村修平, 恩田裕一, 今井章雄, 松重一夫
    • Journal Title

      水環境学会誌 28

      Pages: 313-319

    • NAID

      10015722196

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Why has Lake Kasumigaura become turbid?2005

    • Author(s)
      T.Fukushima, S.Kawamura, T.Seki, Y.Onda, A.Imai, K.Matsushige
    • Journal Title

      Verh.Internat.Verein.Limnol. 29

      Pages: 732-737

    • Related Report
      2005 Annual Research Report
  • [Presentation] Changes in sediment in last in last 30 years Lakes Kasumigaura and Suwa2007

    • Author(s)
      K. Kamiya, T. Fukushima, Y. Onda, K. Matsushige and S. Mizugaki
    • Organizer
      The 72th Annual Meeting of Japanese Society of Limnology
    • Place of Presentation
      Mito
    • Year and Date
      2007-09-13
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Changes in sedimentation rates and phosphorys in sediments in last 30 years in Japanese shallow lakes2007

    • Author(s)
      K. Kamiya, T. Fukushima, Y. Onda, K. Matsushige and S. Mizugaki
    • Organizer
      SIL 30 Congress
    • Place of Presentation
      Montreal
    • Year and Date
      2007-08-13
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Changes in sedimentation rates and phosphorus in sediments in last 30 years in Japanese shallow lakes2007

    • Author(s)
      K. Kamiya, T. Fukushima, Y. Onda, K. Matsushige
    • Organizer
      SIL 30 Congress
    • Place of Presentation
      Montreal
    • Year and Date
      2007-08-13
    • Related Report
      2007 Annual Research Report
  • [Presentation] Changes in sedimentation rates in Japanese shallow lakes2006

    • Author(s)
      K. Kamiya, T. Fukushima, Y. Onda, K. Matsushige and S. Mizugaki
    • Organizer
      The 71th Annual Meeting of the Japanese Society of Limnology
    • Place of Presentation
      Matsuyama
    • Year and Date
      2006-09-18
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary

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Published: 2005-04-01   Modified: 2016-04-21  

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