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2012 Fiscal Year Final Research Report

Study of soil degradation and watershed management with sediment and organic carbon dynamics

Research Project

  • PDF
Project/Area Number 23780244
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionUtsunomiya University

Principal Investigator

OSAWA Kazutoshi  宇都宮大学, 農学部, 准教授 (30376941)

Project Period (FY) 2011 – 2012
Keywords物質循環 / 土壌侵食 / 土壌炭素隔離 / 自然共生型流域圏
Research Abstract

Excess soil and nutrients yields transport toward the coastal zones and deposition on corals are one of the major environmental problems in Okinawa, Japan, in which agricultural area is the major source of sediment yield. In this study, runoff of sediment, organic carbon are observed in several agricultural field and Todoroki River watershed in Yaeyama region. Storage capacity for soil organic carbon varied with landuse and management distinctly. Organic carbon runoff at Todoroki River watershed was related with sediment runoff. Simulated sediment and organic carbon runoff using the WEPP model was clarified the positive effect of no-tillage farming and adding residue mulch.

  • Research Products

    (12 results)

All 2013 2012 2011

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (6 results)

  • [Journal Article] パラオ共和国ガリキル川流域での土地開発に伴う土砂流出の現地観測および解析2013

    • Author(s)
      工藤将志,大澤和敏,菅和利,佐藤航太郎,池田駿介
    • Journal Title

      土木学会論文集B1(水工学)

      Volume: 69,4 Pages: I_937-I_942

    • Peer Reviewed
  • [Journal Article] 地表面温度推定値を用いた関東地方における有効長波放射量推定式の比較2013

    • Author(s)
      松井宏之,大澤和敏
    • Journal Title

      応用水文

      Volume: 25 Pages: 15-24

    • Peer Reviewed
  • [Journal Article] A seasonal behavior of surface soil moisture condition in a reclaimed tropical peatland2012

    • Author(s)
      Ippei IIYAMA, Kazutoshi OSAWA, Tatsuya Nagai
    • Journal Title

      Soil Science and Plant Nutrition

      Volume: vol. 58 Pages: 543-552

    • DOI

      DOI:10.1080/00380768.2012.723222

    • Peer Reviewed
  • [Journal Article] 冬季の沖縄県北部亜熱帯広葉樹林地域におけるCO2フラックスの地点および観測日による変動実態2012

    • Author(s)
      酒井一人,仲村渠将,吉永安俊,長野敏英,大澤和敏,石田朋靖
    • Journal Title

      土壌の物理性

      Volume: 122 Pages: 23-31

    • Peer Reviewed
  • [Journal Article] 土壌侵食に伴う有機炭素および栄養塩の流出に関する現地観測2012

    • Author(s)
      大澤和敏,池田廉,松井宏之,小沢聖
    • Journal Title

      応用水文

      Volume: 24 Pages: 31-40

    • Peer Reviewed
  • [Journal Article] Accuracy comparison of cabbage coverage estimated from remotely sensed imagery using an unmixing method2011

    • Author(s)
      Kazuo Oki, Masaru Mizoguchi, Kosuke Noborio, Koshi Yoshida, Kazutoshi Osawa, Shoichi Mitsuishi, and Tetsu Ito
    • Journal Title

      Computers and Electronics in Agriculture

      Volume: 79 Pages: 30-35

    • DOI

      DOI:10.1016/j.compag.2011.08.001

    • Peer Reviewed
  • [Presentation] パラオ共和国ガリキル川流域での土地開発に伴う土砂流出の現地観測および解析2013

    • Author(s)
      工藤将志
    • Organizer
      第57回水工学講演会
    • Place of Presentation
      名城大学
    • Year and Date
      2013-03-05
  • [Presentation] 水田における冬期湛水と有機資材投入が温室効果ガス放出へ与える影響2012

    • Author(s)
      大澤和敏
    • Organizer
      平成24年度農業農村工学会大会講演会
    • Place of Presentation
      北海道大学
    • Year and Date
      2012-09-19
  • [Presentation] サトウキビの栽培方法の違いによる土砂・土壌炭素動態の比較2012

    • Author(s)
      木村賢
    • Organizer
      平成24年度農業農村工学会大会講演会
    • Place of Presentation
      北海道大学
    • Year and Date
      2012-09-19
  • [Presentation] パラオ共和国における土地開発が土砂流出に与える影響2012

    • Author(s)
      工藤将志
    • Organizer
      平成24年度農業農村工学会大会講演会
    • Place of Presentation
      北海道大学
    • Year and Date
      2012-09-19
  • [Presentation] 八重山地方における土地利用形態が異なる3流域での土砂流出特性2011

    • Author(s)
      木村賢
    • Organizer
      平成23年度農業農村工学会大会講演会
    • Place of Presentation
      九州大学
    • Year and Date
      2011-09-06
  • [Presentation] 農地における有機資材投入に伴う土壌有機炭素貯留2011

    • Author(s)
      池田廉
    • Organizer
      平成23年度農業農村工学会大会講演会
    • Place of Presentation
      九州大学
    • Year and Date
      2011-09-06

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Published: 2014-09-25  

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