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

Thermal insulation function of ground cover on frozen soil stability in permafrost cities

Research Project

Project/Area Number 20K06145
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 40010:Forest science-related
Research InstitutionNagoya University

Principal Investigator

Kotani Ayumi  名古屋大学, 生命農学研究科, 准教授 (80447242)

Project Period (FY) 2020-04-01 – 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 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords地表被覆 / 土地利用 / 永久凍土 / 活動層 / 地表面熱収支 / 土地利用変化 / 凍土 / シベリア / 植生被覆 / 凍土熱環境 / 植生凍土相互作用
Outline of Research at the Start

気候変動の影響を直接的・間接的に受け、降水量や気温の極端現象の激化や頻発化に直面している寒冷圏陸域生態系では、今後も永久凍土荒廃・後退が進行すること懸念されている。従来から注目されている火災や森林伐採などの攪乱に加えて、都市活動にともなう土地利用変化の影響もその要因の一つである。土地利用変化が凍土環境およびその安定性に及ぼす影響を最小限に抑える対策につながる知見を得ることを目的として、本研究では永久凍土地帯東シベリア森林域にある都市周縁域における、利用形態や攪乱程度の異なる植生地の凍土保護機能を地表被覆の断熱効果に着目して評価する。

Outline of Final Research Achievements

To clarify how land use change affects the permafrost protection function of forest ecosystems and how the active layer deepens,these tasks were carried out in. 1) A literature survey to investigate land use and permafrost conservation efforts in suburban areas and, in particular, to confirm the impact of livestock farming and cultivation on the thermophysical properties of soil. 2) Analysis of observation data from forest monitoring sites to evaluate the impact of surface vegetation and soil moisture on the thaw-freeze process of the active layer. 3) Road landscape photograph analysis to examine the impact of road extension and deforestation on the thermal dynamics of permafrost. These efforts provided basic information for a comprehensive evaluation of the impact of land use change on permafrost protection function.

Academic Significance and Societal Importance of the Research Achievements

本研究は、文献調査、森林の凍土環境の解析、都市周辺の景観解析という異なる手法を用いて、人間活動のもたらす凍土環境への影響を多角的に明らかにすることを目的としていたが、研究を進める中で多手法の融合が十分に進まず、その結果、人間活動がもたらす凍土への影響の定量化や効果的な凍土保全策の提案には限界があった。今後の課題として、データの精度向上と研究手法の改善とともに、異なる土地利用の相互作用も視野に入れた解析を進めることで、地域社会における環境教育や環境保護意識の向上に貢献することが期待される。

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

    (11 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (4 results) Presentation (7 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] Institute for Biological Problems(ロシア連邦)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Inst. Biol. Probl. Cryolithozone(ロシア連邦)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Institute for Biological Problems of.../North-Eastern Federal University(ロシア連邦)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Institute for Biological Problems of.../Northeastern Federal University(ロシア連邦)

    • Related Report
      2020 Research-status Report
  • [Presentation] 10年のタワーフラックス観測による年々変動ー北東ユーラシア落葉針葉樹林の気候応答2024

    • Author(s)
      小谷亜由美
    • Organizer
      日本農業気象学会全国大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Changing Seasonal Transition of Surface Energy Balance in Permafrost Larch Forest2023

    • Author(s)
      Ayumi Kotani
    • Organizer
      THE FOURTH INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SCIENCE AND TECHNOLOGY
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 東シベリアの落葉針葉樹林における冬季温度と植物成長期のCO2収支2022

    • Author(s)
      小谷 亜由美,中井 太郎,檜山 哲哉
    • Organizer
      水文・水資源学会 日本水文科学会 2022年度研究発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] Soil freezing and spring CO2 fluxes in larch forests of Siberia2022

    • Author(s)
      A Kotani
    • Organizer
      International Symposium on “Pan-Arctic Water-Carbon Cycles and Terrestrial Changes in the Arctic: For resilient Arctic Communities”.
    • Related Report
      2021 Research-status Report
  • [Presentation] Seasonality of public interest in trees detected by internet search activity2021

    • Author(s)
      A Kotani, S Nagai, S Tei
    • Organizer
      the All-Russian Conference with International Participation THE ROLE OF BOTANICAL GARDENS IN THE CONSERVATION AND ENRICHMENT OF NATURAL AND CULTURAL FLORA
    • Related Report
      2021 Research-status Report
  • [Presentation] Decadal scale variation of permafrost active layer thickness at larch forests in eastern Siberia2020

    • Author(s)
      小谷亜由美
    • Organizer
      The 11th Symposium on Polar Science
    • Related Report
      2020 Research-status Report
  • [Presentation] Effect of precipitation on interannual variability of permafrost active layer thickness at larch forests in eastern Siberia2020

    • Author(s)
      小谷亜由美
    • Organizer
      Japan Geoscience Union meeting 2020
    • Related Report
      2020 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi