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Impact assessment of climate change on future food security in Japan

Research Project

Project/Area Number 20K12191
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 63040:Environmental impact assessment-related
Research InstitutionFukushima University

Principal Investigator

Yoshida Ryuhei  福島大学, 共生システム理工学類, 准教授 (70701308)

Co-Investigator(Kenkyū-buntansha) 西原 是良  東京大学, 大学院農学生命科学研究科(農学部), 助教 (20714893)
高橋 大輔  拓殖大学, 政経学部, 教授 (30619812)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords気候変動 / 作物生産 / 水稲生育 / 生産額 / 食糧安全保障
Outline of Research at the Start

大規模アンサンブル生育シミュレーションと詳細農地データに基づき,今後の日本の食糧安全保障の見通しを明らかにする.主要4穀物のうち自給ができているコメは自国生産,その他の穀物は日本へ多く輸出する国と世界の主要生産国を対象とする.不作/豊作の発生頻度を明らかにし,農地政策や栽培管理の検証を通して,気候変動の顕在化が懸念される将来において安定した食糧安全保 障を保つための方法を明らかにする.

Outline of Final Research Achievements

We evaluated the impact of climate change on crop production. Using the latest climate prediction data from CMIP6 and the crop growth model CYGMA, we estimated the increase in maize yield in response to a government agricultural expenditure of $1 billion. The results indicate that under significant warming scenarios, yield growth will slow, particularly in low-income countries. Additionally, we found that if global warming is not mitigated, the quality of rice in Japan will deteriorate, and yield will decrease in Kyushu, potentially leading to lower production value compared to the current levels. It is essential to not only work towards mitigating climate change but also to promote adaptive strategies such as the development of heat-resistant crop varieties and adjustments to transplanting dates.

Academic Significance and Societal Importance of the Research Achievements

開発途上国を中心に世界の人口は増加を続けており,食糧生産性の向上を維持するために収量の増加が必要である.本研究は温暖化緩和の進捗によっては同じ農業研究開発投資や栽培方法であっても収量の増加が目減りあるいは減少へ転じることを示しており,気候変動に対する対策が急務であることを示している.また,収量や品質といった作物情報を生産額へと翻訳することで影響評価研究を発展させ,気候変動によって農作物が受ける影響の定量化を推進した.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2024 2023 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Climate mitigation sustains agricultural research and development expenditure returns for maize yield improvement in developing countries2023

    • Author(s)
      Yoshida Ryuhei、Iizumi Toshichika
    • Journal Title

      Environmental Research Letters

      Volume: 18 Issue: 4 Pages: 044026-044026

    • DOI

      10.1088/1748-9326/acc543

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Applicability of meteorological ensemble forecasting to predict summer cold damage in rice growth2020

    • Author(s)
      YOSHIDA Ryuhei、FUKUI Shin、FUKUI Shin、YAMAZAKI Takeshi
    • Journal Title

      Journal of Agricultural Meteorology

      Volume: 76 Issue: 3 Pages: 128-139

    • DOI

      10.2480/agrmet.D-20-00004

    • NAID

      130007872066

    • ISSN
      0021-8588, 1881-0136
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 質と量に基づく今後のコメ生産額変動の推定2024

    • Author(s)
      吉田龍平, 西原是良, 高橋大輔
    • Organizer
      第19回ヤマセ研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 気候変動が東北と九州のコメ産出額に与える影響2023

    • Author(s)
      吉田龍平, 西原是良, 高橋大輔
    • Organizer
      日本気象学会2023年度秋季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Estimating the social impacts of climate change on rice production in Japan using process-based crop models2023

    • Author(s)
      Yukinaga Nishihara, Daisuke Takahashi, Ryuhei Yoshida
    • Organizer
      2023 International conference on agricultural and environmental economics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 日本のコメ産出額が地球温暖化によって受ける影響の予測2023

    • Author(s)
      吉田龍平, 西原是良, 高橋大輔
    • Organizer
      日本農業気象学会2023年全国大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 農業研究開発による作物収量増加に対する気候緩和の寄与2022

    • Author(s)
      吉田龍平, 飯泉仁之直
    • Organizer
      日本気象学会2022年度秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 求められる利水と治水のインターリンケージ: 気候変動への適応の過程に注目して2021

    • Author(s)
      西原是良,岡田将誌,中河嘉明,横沢正幸
    • Organizer
      水文・水資源学会研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 全球作物生産性予測モデルCROVERの信濃川流域への適用2021

    • Author(s)
      岡田将誌,中河嘉明,西原是良,横沢正幸
    • Organizer
      日本地理学会発表要旨集 2021 年度日本地理学会秋季学術大会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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