• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Chemical speciation and availability of phosphorus in soil colloids for the prediction of eutrophication

Research Project

Project/Area Number 15H04467
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Plant nutrition/Soil science
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Hashimoto Yohey  東京農工大学, (連合)農学研究科(研究院), 准教授 (80436899)

Co-Investigator(Kenkyū-buntansha) 豊田 剛己  東京農工大学, (連合)農学研究科(研究院), 教授 (30262893)
山口 紀子  国立研究開発法人農業・食品産業技術総合研究機構, 農業環境変動研究センター, ユニット長 (80345090)
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Keywordsコロイド / リン / 土壌 / 富栄養化
Outline of Final Research Achievements

Phosphorus is one of the important elements involved in eutrophication of water bodies and algae growth. Phosphorus is supplied to lakes and marshes from land such as farmlands in the form of adhering to soil particles. It has been pointed out that soil colloidal particles (1 nm to 1 μm) play an important role in long-range transport of phosphorus. In this study, we focused on the colloidal particles of soils and clarified the concentration and chemical form of phosphorus contained in the soils to obtain the knowledge that leads to the eutrophication of water system. This study confirmed that phosphorus was accumulated in the colloidal particles of soils and that it was mainly retained by iron minerals such as ferrihydrite.

Academic Significance and Societal Importance of the Research Achievements

土壌のコロイド粒子中の鉄は,フェリハイドライトやゲーサイトのような(水)酸化鉄鉱物が主体である(60~70%)ことが明らかになった.一方,バルク土壌においては,イライトのような層状ケイ酸塩鉱物に含まれる鉄が主体であった.この結果は,コロイド粒子には,(水)酸化鉄鉱物が選択的に含まれることを示しており,土壌からリンを吸着した(水)酸化鉄鉱物がコロイドに含まれる形で,水田土壌から河川へ流出する可能性を示唆している.

Report

(5 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (9 results)

All 2017 2016 2015

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (8 results)

  • [Journal Article] Chemical Species of Phosphorus and Zinc in Water-Dispersible Colloids from Swine Manure Compost.2017

    • Author(s)
      Yamamoto, K. and Y. Hashimoto.
    • Journal Title

      Journal of environmental quality

      Volume: 46 Issue: 2 Pages: 461-465

    • DOI

      10.2134/jeq2016.11.0433

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 鉄水酸化物(ferrihydrite)に吸着したリンがSynechococcus sp.の生育に及ぼす影響2017

    • Author(s)
      安達遥・橋本洋平
    • Organizer
      環境化学討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 水田土壌の水分散性コロイドに含まれるリンの化学状態2017

    • Author(s)
      安達遥・橋本洋平・伊藤大輔
    • Organizer
      日本土壌肥料学会仙台大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 水田土壌由来の水分散性コロイドの元素組成と鉄およびリンの化学形態2017

    • Author(s)
      安達遥・橋本洋平・伊藤大輔
    • Organizer
      土壌物理学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 豚ぷん堆肥連用土壌およびコロイド粒子に蓄積したリン・銅・亜鉛の化学形態2016

    • Author(s)
      山本航介・橋本洋平・佐藤恵利華・福永亜矢子・豊田剛己
    • Organizer
      日本土壌肥料学会佐賀大会
    • Place of Presentation
      佐賀大学(佐賀県佐賀市)
    • Year and Date
      2016-09-19
    • Related Report
      2016 Annual Research Report
  • [Presentation] 黒ボク土のリン・酸化物鉱物・腐植の三重複合体の存在2015

    • Author(s)
      橋本洋平・髙本慧・小林和樹
    • Organizer
      土壌肥料学会
    • Place of Presentation
      京都大学(京都府京都市)
    • Year and Date
      2015-09-09
    • Related Report
      2015 Annual Research Report
  • [Presentation] 豚ぷん堆肥連用圃場におけるリン・銅・亜鉛の蓄積形態と経年変化2015

    • Author(s)
      山本航介・橋本洋平・佐藤恵利華・福永亜矢子・豊田剛己
    • Organizer
      土壌肥料学会
    • Place of Presentation
      京都大学(京都府京都市)
    • Year and Date
      2015-09-09
    • Related Report
      2015 Annual Research Report
  • [Presentation] 化学肥料および堆肥を21年間連用した黒ボク土壌中のリンと炭素の蓄積および化学形態2015

    • Author(s)
      小林和樹,橋本洋平,木庭啓介
    • Organizer
      土壌肥料学会
    • Place of Presentation
      京都大学(京都府京都市)
    • Year and Date
      2015-09-09
    • Related Report
      2015 Annual Research Report
  • [Presentation] 豚ぷん堆肥の水分散性コロイドに含まれるリン・銅・亜鉛の環境影響2015

    • Author(s)
      山本航介,橋本洋平
    • Organizer
      環境化学討論会
    • Place of Presentation
      札幌コンベンションセンター(北海道札幌市)
    • Year and Date
      2015-06-24
    • Related Report
      2015 Annual Research Report

URL: 

Published: 2015-04-16   Modified: 2022-11-04  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi