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Effects of mitigation of competition in rhizosphere between tree and understory vegetation on nitrogen dynamics and tree growth through mycorrhiza

Research Project

Project/Area Number 17K07830
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Forest science
Research InstitutionHokkaido University

Principal Investigator

FUKUZAWA Karibu  北海道大学, 北方生物圏フィールド科学センター, 准教授 (10456824)

Co-Investigator(Kenkyū-buntansha) 谷口 武士  鳥取大学, 乾燥地研究センター, 准教授 (10524275)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords土壌窒素 / ササ / ミズナラ / 細根 / 純一次生産 / 外生菌根菌 / 土壌環境 / 食害 / 林床植生 / 樹木 / 微生物 / 環境 / 外生菌根 / 一次生産 / 植物 / 生態学 / 土壌学
Outline of Final Research Achievements

We manipulated removal of a dominant understory vegetation, Sasa senanensis in cool-temperate forests in Japan, and investigated the effect of the removal on soil nitrogen dynamics, fine root dynamics, net primary productivity of the trees, mycorrhizal formation and composition in tree roots. The change in soil inorganic nitrogen availability by Sasa removal was small and fine root of Sasa remained even after above-ground Sasa removal, implying that maintained nitrogen uptake by Sasa attributes to stable nitrogen dynamics after the disturbance. The change in tree production, mycorrhizal formation rate, and mycorrhizal composition were also small. This study clarified that short-term effects of Sasa removal on nitrogen dynamics was small and suggest that resistance of S. senanensis to the above-ground disturbance might be the reason of the stable response of soil nitrogen dynamics.

Academic Significance and Societal Importance of the Research Achievements

樹木ではなく林床植生の地上部撹乱に着目して地下部応答と窒素動態の関係、樹木や外生菌根菌動態の応答を示し、いずれも短期的に変化しにくいことが明らかになった。これは、さまざまな撹乱や環境変化に曝されうる森林が細根動態や菌根菌動態を通じて森林の生産性や生態系機能を維持するメカニズムの解明において有用な知見である。また、集水域スケールで林床植生除去の影響を評価した研究はこれまでにない。社会的には、植生撹乱に対する生態系のレジリエンスがクマイザサが生育する森林では比較的大きいことが明らかになり、森林のもつ生態系サービスの維持・予測、北方林における持続的な林業の方策にも示唆を与えるものである。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (11 results)

All 2020 2019 2018

All Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results) Presentation (4 results)

  • [Journal Article] Stream water quality in relation to watershed‐scale practical forest management in a cool‐temperate natural forest in northern Japan2020

    • Author(s)
      Fukuzawa Karibu、Satoh Fuyuki、Shibata Hideaki、Kamiura Tatsuya、Kozuka Chikara、Takanishi Toshikazu、Hayakashi Shintaro、Hirano Yuya、Mamiya Wataru、Yabuhara Yuri、Sakai Rei、Sugiyama Hiroshi、Masumoto Hiroshi、Fukuzawa Naoko、Takeda Tetsuji、Morita Hideaki、Yamanouchi Makoto、Hasegawa Junko、Yoshida Toshiya
    • Journal Title

      Ecological Research

      Volume: - Issue: 5 Pages: 742-749

    • DOI

      10.1111/1440-1703.12094

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Communities of arbuscular mycorrhizal fungi in forest ecosystems in Japan’s temperate region may be primarily constituted by limited fungal taxa.2020

    • Author(s)
      Miyake H., Ishitsuka S., Taniguchi T., Yamato M.
    • Journal Title

      Mycorrhiza

      Volume: ― Issue: 2-3 Pages: 257-268

    • DOI

      10.1007/s00572-020-00945-z

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Soil prokaryotic community structure is determined by a plant-induced soil salinity gradient rather than other environmental parameters associated with plant presence in a saline grassland2020

    • Author(s)
      Tatsumi Chikae、Imada Shogo、Taniguchi Takeshi、Du Sheng、Yamanaka Norikazu、Tateno Ryunosuke
    • Journal Title

      Journal of Arid Environments

      Volume: 176 Pages: 104100-104100

    • DOI

      10.1016/j.jaridenv.2020.104100

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Soil nitrogen cycling is determined by the competition between mycorrhiza and ammonia‐oxidizing prokaryotes2020

    • Author(s)
      Tatsumi Chikae、Taniguchi Takeshi、Du Sheng、Yamanaka Norikazu、Tateno Ryunosuke
    • Journal Title

      Ecology

      Volume: 101 Issue: 3 Pages: 1-10

    • DOI

      10.1002/ecy.2963

    • NAID

      120006810862

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Does conversion from natural forest to plantation affect fungal and bacterial biodiversity, community structure, and co-occurrence networks in the organic horizon and mineral soil?2019

    • Author(s)
      Nakayama Masataka、Imamura Shihomi、Taniguchi Takeshi、Tateno Ryunosuke
    • Journal Title

      Forest Ecology and Management

      Volume: 446 Pages: 238-250

    • DOI

      10.1016/j.foreco.2019.05.042

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The effect of a freeze-thaw cycle on dissolved nitrogen dynamics and its relation to dissolved organic matter and soil microbial biomass in the soil of a northern hardwood forest2019

    • Author(s)
      Watanabe Tsunehiro、Tateno Ryunosuke、Imada Shogo、Fukuzawa Karibu、Isobe Kazuo、Urakawa Rieko、Oda Tomoki、Hosokawa Nanae、Sasai Takahiro、Inagaki Yoshiyuki、Hishi Takuo、Toda Hiroto、Shibata Hideaki
    • Journal Title

      Biogeochemistry

      Volume: 142 Issue: 3 Pages: 319-338

    • DOI

      10.1007/s10533-019-00537-w

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Stream Runoff and Nitrate Recovery Times After Forest Disturbance in the USA and Japan2018

    • Author(s)
      Oda Tomoki、Green Mark B.、Urakawa Rieko、Scanlon Todd M.、Sebestyen Stephen D.、McGuire Kevin J.、Katsuyama Masanori、Fukuzawa Karibu、Adams Mary B.、Ohte Nobuhito
    • Journal Title

      Water Resources Research

      Volume: 54 Issue: 9 Pages: 6042-6054

    • DOI

      10.1029/2017wr021986

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 冷温帯林におけるササ除去が窒素動態および外生菌根菌組成に及ぼす影響2020

    • Author(s)
      福澤加里部、谷口武士、野村睦、中山理智
    • Organizer
      日本森林学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 北海道東部の森林における土壌微生物群集と窒素無機化ポテンシャルの関係2020

    • Author(s)
      中山理智、今村志帆美、龍見史恵、谷口武士、舘野隆之輔
    • Organizer
      日本森林学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 冷温帯林でのササ除去前後における樹木と共生した外生菌根菌組成2019

    • Author(s)
      福澤加里部・谷口武士
    • Organizer
      第130回日本森林学会大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 冷温帯林におけるササの除去は土壌水分と窒素動態を変えるか?2018

    • Author(s)
      福澤加里部・谷口武士・野村睦
    • Organizer
      第129回日本森林学会大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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