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Water quality of Japanese rivers and its variation duriag these several decades by the change of cultural, industrial and hydrological systems

Research Project

Project/Area Number 16310010
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionKyoto University

Principal Investigator

SUGIYAMA Masahito  Kyoto University, Graduate School of Global Environmental Studies, Professor (10179179)

Co-Investigator(Kenkyū-buntansha) HORI Toshitaka  Kyoto University, Graduate School of Human and Environmental Studies, Professor (40108981)
Project Period (FY) 2004 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥16,260,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥660,000)
Fiscal Year 2007: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2006: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2005: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2004: ¥9,500,000 (Direct Cost: ¥9,500,000)
KeywordsWater Quality / Water System / Dissolved Chemical Component / Suspended Chemical Component / Material Circulation / Silica Deficiency / 河川 / 水質 / 環境影響 / 中途停滞水域 / 懸濁粒子
Research Abstract

Based on the rivers studied by J. Kobayashi (1961), we surveyed water quality of 133 rivers from Hokkaido to Kagoshima areas. By comparing the results of Kobayashi and us, we discussed long term change of water quality of rivers from 1950s to present, regional characteristics of present water quality in respective rivers and the hydrological factors in the watershed affecting them. We concluded the followings based on such discussions. By anthropogenic input, Cl concentration increased heavily and Ca, Mg, Na and K concentrations inc eased slightly. The concentration of SO_4 also increased heavily by the effect from the combustion of basil fuel Increase of P concentration was observed but was not affected severely by human activities.
In contrast to the above elements, Si concentration decreased in many rivers. We discussed the effects of various hydrological characteristics in their watersheds on Si decrease. The more the water-reserving capacity in the watershed is, the more the Si con … More centration decreased This result suggests that its decrease was greatly affected by the construction of water reservoirs in the watershed.
We investigated the effect of a dam construction on the water quality of a river in Lake Okutsu which was recently constructed in northern part of Okayama Prefecture. We could not observe a remarkable decrease of Si concentration in the lake and its lower reaches, becalm this lake is existed at the most upper part of Yoshii River and was not biologically productive due to a low concentration of P in the river and lake waters These results indicate that accumulation of Si dissolved in the lake water into the bottom sediment in a dam is influenced by the input of P and N from its watershed and that its accumulation is possible to be highly active in a dam at the lower part of a river.
We also investigated the dissolution of oxyanions, vanadate and phosphate, from lake sediments by the change of water quality in bottom waters. In both of natural and artificial lakes, their dissolution was greatly affected by the changes of water qualitiy in bottom waters and distribution process of chemical components at the water/sediment interface. Less

Report

(5 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (24 results)

All 2008 2007 2006 2005 2004 Other

All Journal Article (9 results) (of which Peer Reviewed: 3 results) Presentation (10 results) Book (5 results)

  • [Journal Article] 東北アジアの水事情2008

    • Author(s)
      杉山雅人
    • Journal Title

      人環フォーラム 22

      Pages: 14-17

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] Decrease of dissolved oxygen in the bottom water of a lake and phosphate dissolution from the sediment2008

    • Author(s)
      M. Sugiyama, M. Ueyama and T. Hori
    • Journal Title

      Proc. 12th World Lake Conf. Taal 2007 (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Water in North Eastern Asia (in Japanese)2008

    • Author(s)
      M., Sugiyama
    • Journal Title

      JinKan Forum 22

      Pages: 14-17

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Release of trace oxyanion from littoral sediments and suspended particles induced by pH increase in the epilimnion of lakes2005

    • Author(s)
      Y. Harita, T. Hori and M. Sugiyama
    • Journal Title

      Limnol. Oceanogr. 50

      Pages: 636-645

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Release of trace oxyanion from littoral sediments and suspended particles induced by pH increase in the epilimnion of lakes2005

    • Author(s)
      Y., Harita, T., Hori, M., Sugiyama
    • Journal Title

      Limnol. Oceanogr 50

      Pages: 636-645

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 淡水中の懸濁粒子2004

    • Author(s)
      杉山雅人
    • Journal Title

      ぶんせき

      Pages: 412-414

    • NAID

      10013283687

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Suspended particles in a fresh water (in Japanese)2004

    • Author(s)
      M., Sugiyama
    • Journal Title

      Bunseki

      Pages: 412-414

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 淡水中の懸濁粒子2004

    • Author(s)
      杉山雅人
    • Journal Title

      ぶんせき 2004・7

      Pages: 412-414

    • NAID

      10013283687

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Decrease of dissolved oxygen in the bottom water of a lake and phosphate dissolution from the sediment

    • Author(s)
      M., Sugiyama, M., Ueyama, T.,Hori
    • Journal Title

      Proc. 12th World Lake Conf. Taal 2007 (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Decrease of dissolved oxygen in the bottom water of a lake and phosphate dissolution from the sediment2007

    • Author(s)
      M. Sugiyama, M. Ueyama and T. Hori
    • Organizer
      12th World Lake Conf. Taal 2007
    • Place of Presentation
      BM Birla Sci. & Technol. Centre, Jaipur, India
    • Year and Date
      2007-10-30
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Decrease of dissolved oxygen in the bottom water of a lake and phosphate dissolution from the sediment2007

    • Author(s)
      M., Sugiyama, M., Ueyama, T., Hori
    • Organizer
      12th World Lake Conf. Taal 2007
    • Place of Presentation
      BM Birla Sci. & Ilichnol. Centre, Jaipur, India
    • Year and Date
      2007-10-30
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 河川中途貯水域の出現が当該水域の物質動態に与える影響2007

    • Author(s)
      宮下奈緒子, 堀智孝, 杉山雅人
    • Organizer
      日本陸水学会近畿支部会第18回研究会
    • Place of Presentation
      滋賀県琵琶湖・環境科学研究センター
    • Year and Date
      2007-03-10
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Appearance of stagnant water area in a river system and its effect on the water quality and material dynamics in the area2007

    • Author(s)
      N., Miyashita, T., Hori, M., Sugiyama
    • Organizer
      Annual Meeting, Kinki Branch Limnological Society of Japan
    • Place of Presentation
      Lake Biwa Environmental research Institute
    • Year and Date
      2007-03-10
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 底層水中の溶存酸素減少と堆積物からの栄養塩溶出2006

    • Author(s)
      杉山雅人、上山真理、堀智孝
    • Organizer
      日本陸水学会第71回大会
    • Place of Presentation
      愛媛大学
    • Year and Date
      2006-09-17
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Decrease of dissolved oxygen in the bottom water of a lake and nutrients dissolution from the sediment2006

    • Author(s)
      M., Sugiyama, M., Ueyama, T., Hori
    • Organizer
      Annual Meeting of Linological Society of Japan
    • Place of Presentation
      Ehime University
    • Year and Date
      2006-09-17
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 本邦河川水質の特性と近過去からの変容2006

    • Author(s)
      佐藤詩織, 堀智孝, 杉山雅人
    • Organizer
      日本陸水学会近畿支部会第17回研究会,
    • Place of Presentation
      大阪阪府立大学
    • Year and Date
      2006-03-11
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] 琵琶湖における湖底堆積物からの栄養塩溶出機構2006

    • Author(s)
      上山真理, 堀智孝, 杉山雅人
    • Organizer
      日本陸水学会近畿支部会第17回研究会,
    • Place of Presentation
      大阪阪府立大学
    • Year and Date
      2006-03-11
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Water quality of Japanese rivers and its change during these several decades2006

    • Author(s)
      S., Sato, T., Hori, M., Sugiyama
    • Organizer
      Annual Meeting, Kinki Branch, Limnological Society of Japan
    • Place of Presentation
      Osaka Prefectural University
    • Year and Date
      2006-03-11
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Dissolution system of nutrients from bottom sediments in Lake Biwa2006

    • Author(s)
      M., Ueyama, T., Hori, M., Sugiyama
    • Organizer
      Annual Meeting, Kinki Branch, Limnological Society of Japan
    • Place of Presentation
      Osaka Prefectural University
    • Year and Date
      2006-03-11
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] 第5版 実験化学講座20-2 環境化学(日本化学会 編)2007

    • Author(s)
      杉山雅人(分担)
    • Total Pages
      519
    • Publisher
      丸善
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] Environmental Chemistry (in Japanese)2007

    • Author(s)
      M., Sugiyama
    • Total Pages
      519
    • Publisher
      Maruzen
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] 第5版 実験化学講座20-2 環境化学(2.2.2項 陸水、p.88-94)2007

    • Author(s)
      杉山雅人(分担執筆)
    • Total Pages
      319
    • Publisher
      丸善
    • Related Report
      2006 Annual Research Report
  • [Book] 海と湖の化学(藤永太一郎 監修, 宗林由樹, 一色健司 編)2005

    • Author(s)
      杉山雅人(分担)
    • Total Pages
      560
    • Publisher
      京都大学学術出版会
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] Chemistry in Lakes and the Ocean (in Japanese)2005

    • Author(s)
      M., Sugiyama
    • Total Pages
      560
    • Publisher
      Kyoto University Academic Press
    • 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: 2004-04-01   Modified: 2016-04-21  

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