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Evaluation of habitat quality in paddy field which originate from natural wetland

Research Project

Project/Area Number 20K06096
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 39060:Conservation of biological resources-related
Research InstitutionTokyo Metropolitan University

Principal Investigator

Osawa Takeshi  東京都立大学, 都市環境科学研究科, 准教授 (40554332)

Co-Investigator(Kenkyū-buntansha) 大西 亘  神奈川県立生命の星・地球博物館, 企画情報部, 主任学芸員 (00588270)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords水田生態系 / 植物群集 / 土地利用変化 / 圃場整備 / 自然史資料 / 標本 / 水田 / 湿地 / 地形解析 / 氾濫原湿地 / ハビタット / ネスト構造 / 土地利用 / 農業生態系
Outline of Research at the Start

本研究の目的は、自然湿地の上に形成された水田は、生物の生息場(ハビタット)としての質が高いという仮説を検証することである。方法は、地形解析によって潜在的な自然湿地を推定し、現存する水田をかつて自然湿地であった水田と、人為改変によって本来湿地ではなかった場所に形成された水田に区分し、湿地性植物を指標としてハビタットとしての質を比較する。得られた自由に利用、加工、再配布できるオープンデータとして公開し、保全計画や自然再生に関わる方々が自由に利用できるようにする。

Outline of Final Research Achievements

Paddy fields area currently one of important wetland habitat for several species. Paddy fields are also a form of land use that has been modified by humans. Therefore, they could have various origins such as natural wetland, forest and others. This study aimed to test the hypothesis that paddy fields established in areas that were originally natural wetlands are close to a state of long-term wetland which have high quality as habitats for wetland plants. Through the research period, it was revealed that 1) paddy fields established in areas that were originally wetlands have high quality as wetland habitats, and 2) however, many of these paddy fields are large in size and tend to be priority a consolidation work to improve agricultural efficiency.

Academic Significance and Societal Importance of the Research Achievements

本研究により、少なくとも関東において本来的にハビタットとしての質が高い水田は、優先的に圃場整備が行われ、結果的にその質が失われてきた可能性が高いことが示唆された。現在の日本は既に人口減少社会に突入しており、輸入食品の増加等も影響し、農業活動の縮小が進んでいる。他方、地域の生物多様性を保全する必要性が社会的に高まっている。圃場整備は農業活動の効率化を図る上で極めて重要な役割を持つ一方で、湿地ハビタットとしての質を著しく損なう面がある。農作業の近代化を進めるために圃場整備は現在も進められているが、今後もさらに拡大していく必要が本当にあるのか、再検討するべき時期が来ているかもしれない。

Report

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

    (7 results)

All 2023 2022 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (1 results)

  • [Journal Article] Effects of land-cover history on the occurrence of <i>Luciola cruciata</i> in the southern Tama region of Tokyo, Japan2023

    • Author(s)
      浮田 悠、佐藤 臨、大澤 剛士
    • Journal Title

      Japanese Journal of Conservation Ecology

      Volume: 28 Issue: 1 Pages: n/a

    • DOI

      10.18960/hozen.2219

    • ISSN
      1342-4327, 2424-1431
    • Year and Date
      2023-04-30
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ecosystem-based disaster risk reduction around river confluences: A case study of paddy fields along the Nakagawa River2022

    • Author(s)
      大澤 剛士、瀧 健太郎、三橋 弘宗
    • Journal Title

      Japanese Journal of Conservation Ecology

      Volume: 27 Issue: 1 Pages: n/a

    • DOI

      10.18960/hozen.2030

    • ISSN
      1342-4327, 2424-1431
    • Year and Date
      2022-04-15
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Large, concealed islands in the urban sea: Scattered surrounding green space enhances the quality of grassland habitats in urban parks, Tokyo2022

    • Author(s)
      Ohata Seiichiro、Osawa Takeshi、Sato Nozomu、Tsutsumida Narumasa
    • Journal Title

      Urban Ecosystems

      Volume: - Issue: 3 Pages: 641-649

    • DOI

      10.1007/s11252-022-01311-x

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Toward Social Infrastructure: Typological Idea for Evaluating Implementation Potential of Green Infrastructure2022

    • Author(s)
      Osawa Takeshi、Nishida Takaaki
    • Journal Title

      Green Infrastructure and Climate Change Adaptation

      Volume: - Pages: 61-70

    • DOI

      10.1007/978-981-16-6791-6_5

    • ISBN
      9789811667909, 9789811667916
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Paddy Fields as Green Infrastructure: Their Ecosystem Services and Threatening Drivers2022

    • Author(s)
      Osawa Takeshi、Nishida Takaaki、Oka Takashi
    • Journal Title

      Green Infrastructure and Climate Change Adaptation

      Volume: - Pages: 175-185

    • DOI

      10.1007/978-981-16-6791-6_11

    • ISBN
      9789811667909, 9789811667916
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Paddy fields located in water storage zones could take over the wetland plant community2020

    • Author(s)
      Osawa Takeshi、Nishida Takaaki、Oka Takashi
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 14806-14806

    • DOI

      10.1038/s41598-020-71958-z

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 保全、教育、研究、交流の場となる大学敷地内の緑地2023

    • Author(s)
      大澤剛士、加藤英寿
    • Organizer
      日本生態学会第70回全国大会
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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