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Temporal- and spatial- variations in fatalities by landslides

Research Project

Project/Area Number 21K04590
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 25030:Disaster prevention engineering-related
Research InstitutionUniversity of Miyazaki

Principal Investigator

Shinohara Yoshinori  宮崎大学, 農学部, 准教授 (10615446)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords土砂災害 / 死者数 / 降雨 / 森林 / 日本 / 降水 / 気候変動 / 人口減少 / 犠牲者 / 地球温暖化
Outline of Research at the Start

日本における土砂災害の死者数は,長期的には大きく減少してきたが,近年は横ばいが続いている。ハード対策だけでなく,ソフト対策,森林整備等も含めた複合的な視点から,これを打破するための有効な手段を提案するために,土砂災害による死者数の時空間変動の決定要因を解明する。

Outline of Final Research Achievements

The objective of this study was to clarify the factors affecting the temporal and spatial variations in landslide fatalities. Focusing on the fact that most people died inside houses, the number of landslide fatalities was considered as the product of the numbers of landslides, collapsed houses per landslide, and fatalities per collapsed house. Trends in these features were compared with trends in the factors affecting these features. It was found that the factors contributing to the decrease in landslide fatalities changed with time. Furthermore, this study also indicated the importance of land use, especially forests, in the occurrence of landslides.

Academic Significance and Societal Importance of the Research Achievements

土砂災害による死者数減少は先進国に共通してみられる現象であるが,その要因を明示したのは本研究が世界初である。充実した日本の統計データ等に着目し,網羅的に収集し解析することで,成果を生み出すことができた。本研究は,国内の防災対策において参照されるだけでなく,これから死者数減少を目指す国々にとっても重要な知見を提供していることから社会的意義も大きい。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (14 results)

All 2024 2023 2022 2021 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 3 results) Remarks (1 results)

  • [Journal Article] Quantifying effects of changes in forest age distribution on the landslide frequency in Japan2024

    • Author(s)
      Lusiana Novia、Shinohara Yoshinori、Imaizumi Fumitoshi
    • Journal Title

      Natural Hazards

      Volume: - Issue: 9 Pages: 8551-8570

    • DOI

      10.1007/s11069-024-06537-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Differences in factors determining landslide hazards among three types of landslides in Japan2023

    • Author(s)
      Shinohara Yoshinori、Watanabe Yuta
    • Journal Title

      Natural Hazards

      Volume: 118 Issue: 2 Pages: 1689-1705

    • DOI

      10.1007/s11069-023-06075-x

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Changes in the factors contributing to the reduction of landslide fatalities between 1945 and 2019 in Japan2022

    • Author(s)
      Shinohara Yoshinori、Kume Tomonori
    • Journal Title

      Science of The Total Environment

      Volume: 827 Pages: 154392-154392

    • DOI

      10.1016/j.scitotenv.2022.154392

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Role of Citrus Groves in Rainfall-Triggered Landslide Hazards in Uwajima, Japan2022

    • Author(s)
      Lusiana Novia、Shinohara Yoshinori
    • Journal Title

      Water

      Volume: 14 Issue: 13 Pages: 2113-2113

    • DOI

      10.3390/w14132113

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 森林の成熟が土砂災害発生に与える影響の全国的評価2024

    • Author(s)
      篠原慶規,Novia Lusiana,今泉文寿
    • Organizer
      日本森林学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 降雨による土砂災害の死者数の長期変動は何によって決まっているのか?2023

    • Author(s)
      篠原 慶規, 久米 朋宣
    • Organizer
      水文・水資源学会研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Landslide fatalities for three events in Kure City, Japan2023

    • Author(s)
      Shinohara, Y., Shimomura, C.
    • Organizer
      Interpraevent 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The role of citrus groves in rainfal-triggered landslide hazards in Uwajima, Japan2023

    • Author(s)
      Lusiana N, Shinohara Y
    • Organizer
      Interpraevent 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparison of the occurrences of landslides between orange groves and forests on landslides induced by the heavy rainfall in 2018 in Uwajima City, Japan2022

    • Author(s)
      Lusiana N, Shinohara Y
    • Organizer
      砂防学会研究発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] 降雨による土砂災害発生件数の都道府県別の変動要因の解明2022

    • Author(s)
      篠原慶規,渡邊優太
    • Organizer
      砂防学会研究発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] 令和4年台風第14 号による宮崎県の山地災害の特徴2022

    • Author(s)
      篠原慶規,清水収
    • Organizer
      日本森林学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 降雨による土砂災害発生件数-都道府県別のばらつきを生み出す要因-2021

    • Author(s)
      渡邊優太,篠原慶規
    • Organizer
      砂防学会研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] Distribution of Landslides Triggered by Heavy Rainfall Event July 2018 in Uwajima City, Japan2021

    • Author(s)
      Novia Lusuana, Yoshinori Shinohara
    • Organizer
      American Geophysical Union (AGU) Fall Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 森林の成熟は土砂災害を大きく減少させる

    • URL

      https://www.miyazaki-u.ac.jp/newsrelease/edu-info/post-1166.html

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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