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System for detection of the event of shallow landslide using the composition and isotope database of particulate material in river water

Research Project

Project/Area Number 19K06343
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 41050:Environmental agriculture-related
Research InstitutionTottori University of Environmental Studies

Principal Investigator

Kadono Atsunobu  公立鳥取環境大学, 環境学部, 准教授 (50511234)

Co-Investigator(Kenkyū-buntansha) 小嵐 淳  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 原子力基礎工学研究センター, 研究主幹 (30421697)
山本 敦史  公立鳥取環境大学, 環境学部, 准教授 (40332449)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords土壌侵食 / 地下水質 / 表流水質
Outline of Research at the Start

本研究では、河川中の懸濁有機物(粒子状有機物:POM)と流域の表層土壌有機物(SOM)に対し、①その多様な組成と放射性および安定同位体プロファイルをデータベース化し、②定常的な土壌侵食や表層崩壊の起こった位置と規模を検知するシステムの構築を行う。本研究を全国的に展開することができれば、近年増加傾向にある、豪雨や地震による土砂災害の被害軽減に直結すると考えられる。

Outline of Final Research Achievements

The elemental composition of the parent material in the river basin affects the particulate and dissolved material composition in river water. However, there are few models that can estimate changes in soil and river compositions throughout the basin. Therefore, river water was collected in the Sendai River basin, and the composition of particulate and dissolved materials were investigated. In addition, the geology, topography, soil, and precipitation distribution in the basin were integrated by GIS, and the factors explaining the particulate and dissolved materials composition at the sampling point were extracted.
As a result, as the parent material factor, granite affected the dissolved ion composition, and granodiorite/dacite affected a part of the particulate composition. As a meteorological factor, the intermediate runoff showed a significant positive correlation with the particulate content, but the runoff did not necessarily explained the variation of compositions.

Academic Significance and Societal Importance of the Research Achievements

地球規模での気候変動の顕在化により、増加する傾向のある表層崩壊や土壌侵食、洪水等の豪雨被害への関心は全世界的に高まっており、表層崩壊や土壌侵食の発生場所と規模を検知するシステムの構築につながる本研究は、大きなインパクトを持つと考えられる。特に、高度な防災システムを持たない途上国において、システムの簡便さからより大きな役割を持つと考えられる。また学術的にも、これまであまり正確な推定値が求められていない、日本近海に対する陸域からの河川経由の物質輸送量について新たな知見を提供できると考えられる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2022 2021 2020

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results) Book (3 results)

  • [Journal Article] Transfer of 137Cs to web-building spiders, Nephila clavata, and its pathways: a preliminary study using stable carbon and nitrogen isotope analyses2021

    • Author(s)
      Tanaka Sota、Kakinuma Hotaru、Adati Taro、Atarashi-Andoh Mariko、Koarashi Jun
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: 58 Issue: 4 Pages: 507-514

    • DOI

      10.1080/00223131.2021.1894255

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 流域内の母材及び流出過程が河川水中の懸濁態及び溶存態元素組成に与える影響2022

    • Author(s)
      角野貴信・栗栖哲
    • Organizer
      日本土壌肥料学会2022年東京大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 河川水中の懸濁態及び溶存態元素組成に及ぼす流域環境要因とそのモデル化~鳥取県東部の事例2021

    • Author(s)
      角野 貴信・越田 祐加・石本 有乃・井上 隼
    • Organizer
      日本土壌肥料学会2021年北海道大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Soil organic carbon and its water-extractable fraction in volcanic ash soils in a Japanese temperate forest: relations to phosphate absorption coefficient and their implication2020

    • Author(s)
      Nagano, H., Tanaka, S., Atarashi-Andoh, M., Koarashi, J.
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nitrate contamination of mountainous headwater streams from adjacent agricultural and pasture lands beyond the watershed boundary in eastern Hokkaido, Japan2020

    • Author(s)
      Fukushima, K., Iwasaki, K., Oda, Y., Sakai, Y., Katata, G., Yamaguchi, T., Kubota, T., Nagano, H., Watanabe, M., Koarashi, J.
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Book] SDGsを考える2020

    • Author(s)
      高井 亨、甲田 紫乃
    • Total Pages
      220
    • Publisher
      ナカニシヤ出版
    • ISBN
      9784779514685
    • Related Report
      2020 Research-status Report 2019 Research-status Report
  • [Book] 改訂 土壌学概論2020

    • Author(s)
      犬伏 和之、白鳥 豊
    • Total Pages
      208
    • Publisher
      朝倉書店
    • ISBN
      9784254431278
    • Related Report
      2020 Research-status Report
  • [Book] 土壌学概論第2版2020

    • Author(s)
      犬伏 和之、白鳥 豊
    • Publisher
      朝倉書店
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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