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Mechanism of conifer dominance in humid forests of the western Pacific: analysis in relation to climate, soil condition and light competition

Research Project

Project/Area Number 19H02998
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 40010:Forest science-related
Research InstitutionHokkaido University

Principal Investigator

AIBA Shin-ichiro  北海道大学, 地球環境科学研究院, 教授 (60322319)

Co-Investigator(Kenkyū-buntansha) 今井 伸夫  東京農業大学, 地域環境科学部, 准教授 (00722638)
北山 兼弘  京都大学, 農学研究科, 教授 (20324684)
小野田 雄介  京都大学, 農学研究科, 准教授 (70578864)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2023: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2021: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2019: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywords針葉樹 / 気候 / 土壌 / 光競争 / 森林生態学
Outline of Research at the Start

針葉樹は、進化史的には広葉樹よりも原始的であり、広葉樹に競争排除されてきた歴史をもつ。現在の針葉樹の自然分布は局所的であるが、熱帯から亜寒帯まで幅広い。どうして、針葉樹は広葉樹に追われつつも、幅広い温度環境で生き残ったのだろうか?本研究は、西太平洋地湿潤地域(日本・台湾・ボルネオ・ニュージーランド)において、森林生態系を「植生-土壌系」として気候・土壌と関連づけて分析し、「気候・土壌条件が地上部の光競争を介して針葉樹の優占度を決定する」という仮説を検証することを目的とする。

Outline of Final Research Achievements

This project aims to test the hypothesis that climate and soil jointly determine the conifer dominance through the above-ground competition for light. We conducted fieldwork in forests under various climate and soil conditions in Japan (Hokkaido and southern Japan from southern Kyushu to Nansei Islands), as well as in Malaysia and Mongolia. The gathered data generally supported the above hypothesis. Under cold and/or nutrient-poor conditions, growth rates of broadleaf trees decreased, and conifer dominance increased. This is because conifers have superior tolerance to cold and/or nutrient-poor conditions, although they generally have inferior shade tolerance, as compared to broadleaf trees.

Academic Significance and Societal Importance of the Research Achievements

針葉樹優占林の分布は寒冷地に偏っているが、「北方針葉樹林」のほかに、比較的温暖な地域に分布する「温帯・熱帯針広混交林」がある。本研究の結果は、両タイプの針葉樹優占林について、「気候・土壌条件が地上部の光競争を介して針葉樹の優占度を決定する」という仮説を概ね支持し、気候と土壌が森林の組成と相観を決定するメカニズムの解明に寄与した。一方で、日本の南西諸島や北海道においては、樹種の分布が地史に制約されていることも明らかになった。このことは、現在の森林は現在の気候条件と平衡状態にあるとは限らないことを意味し、気候変動の影響予測には地史的制約を考慮する必要があることを示唆する。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (36 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (5 results) Journal Article (20 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 20 results,  Open Access: 10 results) Presentation (11 results) (of which Invited: 2 results)

  • [Int'l Joint Research] Sabah Parks(マレーシア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Harvard University(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Chinese Academy of Science(中国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Society for the Protection of Nature(ブータン)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Sabah Parks/Sabah Forestry Department(マレーシア)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Exploration capacity versus specific enzymatic activity of ectomycorrhizas in response to primary productivity and soil phosphorus availability in Bornean tropical rainforests2024

    • Author(s)
      Okada Kei-ichi、Yokoyama Daiki、Aiba Shin-ichiro、Kitayama Kanehiro
    • Journal Title

      Scientific Reports

      Volume: 14 Issue: 1

    • DOI

      10.1038/s41598-024-53234-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Consistent patterns of common species across tropical tree communities2024

    • Author(s)
      Cooper et al. (Imai N 149th/353)
    • Journal Title

      Nature

      Volume: 625 Issue: 7996 Pages: 728-734

    • DOI

      10.1038/s41586-023-06820-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The trait‐mediated trade‐off between growth and survival depends on tree sizes and environmental conditions2023

    • Author(s)
      Iida Yoshiko、Niiyama Kaoru、Aiba Shin‐ichiro、Kurokawa Hiroko、Kondo Shuntaro、Mukai Mana、Mori Akira S.、Saito Satoshi、Sun Yi、Umeki Kiyoshi
    • Journal Title

      Journal of Ecology

      Volume: 111 Issue: 8 Pages: 1777-1793

    • DOI

      10.1111/1365-2745.14146

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High plant diversity and characteristic plant community structure in broad‐leaved evergreen forests on Amami‐Oshima and Tokunoshima Islands, Japan's newest natural World Heritage Site2023

    • Author(s)
      Toyama Hironori、Tagane Shuichiro、Aiba Shin‐ichiro、Ugawa Shin、Suzuki Eizi、Yamazaki Kaito、Fuse Kengo、Takashima Atsushi、Kadoya Taku、Takeuchi Yayoi
    • Journal Title

      Ecological Research

      Volume: 38 Issue: 3 Pages: 403-419

    • DOI

      10.1111/1440-1703.12381

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Variations in the reproductive cycle of Bornean montane tree species along elevational gradients on ultrabasic and non-ultrabasic soils.2023

    • Author(s)
      Tsujii Y, Sakai S, Ushio M, Aiba S, Kitayama K.
    • Journal Title

      Biotropica

      Volume: 55 Issue: 1 Pages: 210-220

    • DOI

      10.1111/btp.13177

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Further food for thought: higher tropical mountains revisited once again2022

    • Author(s)
      Ashton PS, Aiba S, Zhu H, Pradhan R.
    • Journal Title

      Tropics

      Volume: 31 Issue: 3 Pages: 43-57

    • DOI

      10.3759/tropics.MS21-16

    • ISSN
      0917-415X, 1882-5729
    • Year and Date
      2022-12-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stand dynamics over 15?years including an outlying population of <scp><i>Fagus crenata</i></scp> at the northern margin of its distribution range in Hokkaido, Japan2022

    • Author(s)
      Aiba Shin‐Ichiro、Namikawa Kanji、Matsui Tetsuya、Abo Eri、Miyazaki Seiji、Tsuzuki Yoichi、Bayarsaikhan Demidkhorloo
    • Journal Title

      Ecological Research

      Volume: 38 Issue: 6 Pages: 740-752

    • DOI

      10.1111/1440-1703.12367

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A dataset for vascular plant diversity monitoring for the natural World Heritage site on Amami‐Oshima Island, Tokunoshima Island, and the northern Okinawa Island2022

    • Author(s)
      Toyama Hironori、Totsu Kumiko、Tagane Shuichiro、Aiba Shin‐ichiro、Ugawa Shin、Suzuki Eizi、Yamazaki Kaito、Fuse Kengo、Takashima Atsushi、Toyama Nariko、Kadoya Taku、Takeuchi Yayoi
    • Journal Title

      Ecological Research

      Volume: 37 Issue: 5 Pages: 676-682

    • DOI

      10.1111/1440-1703.12340

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Litter decomposition rates across tropical montane and lowland forests are controlled foremost by climate2022

    • Author(s)
      Ostertag R, Restrepo C, Dalling JW, Martin PH, Abiem I, Aiba S, ほか22名
    • Journal Title

      Biotropica

      Volume: 54 Issue: 2 Pages: 309-326

    • DOI

      10.1111/btp.13044

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Latitudinal and altitudinal variations across temperate to subtropical forests from southern Kyushu to the northern Ryukyu Archipelago, Japan2021

    • Author(s)
      Aiba S, Kira Y, Araki K, Imamura F, Ishinuki T, Nagata T, Shimonishi S, Ugawa S, Wakiyama S, Yamada T, Yoneda T, Suzuki E.
    • Journal Title

      Journal of Forest Research

      Volume: 26 Issue: 3 Pages: 171-180

    • DOI

      10.1080/13416979.2020.1854065

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of El Nino drought on tree mortality and growth across forest types at different elevations in Borneo2021

    • Author(s)
      Kazuki Miyamoto, Shin-ichiro Aiba, Ryota Aoyagi, Reuben Nilus
    • Journal Title

      Forest Ecology and Management

      Volume: 490 Pages: 119096-119096

    • DOI

      10.1016/j.foreco.2021.119096

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of tree-root exudates on the solubilization of phosphorus adsorbed to non-crystalline minerals in the rhizosphere volcanic soils on Yakushima Island, Japan2021

    • Author(s)
      Mukai M, Aiba S, Kitayama K
    • Journal Title

      Trees

      Volume: 35 Issue: 6 Pages: 2031-2041

    • DOI

      10.1007/s00468-021-02170-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Edaphic specialization and vegetation zones define elevational range-sizes for Mt Kinabalu regional flora2021

    • Author(s)
      Whitman M, Beaman RS, Repin R, Kitayama K, Aiba S, Russo SE
    • Journal Title

      Ecography

      Volume: 44 Issue: 11 Pages: 1698-1709

    • DOI

      10.1111/ecog.05873

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Light and nutrient limitations for tree growth on young versus old soils in a Bornean tropical montane forest.2020

    • Author(s)
      Aiba S., Kitayama K.
    • Journal Title

      Journal of Plant Research

      Volume: 133 Issue: 5 Pages: 665-679

    • DOI

      10.1007/s10265-020-01217-9

    • NAID

      40022332353

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Long-term thermal sensitivity of Earth’s tropical forests2020

    • Author(s)
      Sullivan MJ.P.、Lewis SL.、Affum-Baffoe K、Castilho、Costa F、Sanchez AC、Ewango CEN.、Hubau W、Marimon B、Monteagudo-Mendoza A、Qie L、Sonk B、Martinez RV、Baker TR、Brienen RJW.、Feldpausch TR、Galbraith D、Gloor M、Malhi Y、Aiba S et al.
    • Journal Title

      Science

      Volume: 368 Issue: 6493 Pages: 869-874

    • DOI

      10.1126/science.aaw7578

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Phosphorus allocation to and resorption from leaves regulate the residence time of phosphorus in above‐ground forest biomass on Mount Kinabalu, Borneo2020

    • Author(s)
      Tsujii Yuki、Aiba Shin‐ichiro、Kitayama Kanehiro
    • Journal Title

      Functional Ecology

      Volume: 34 Issue: 8 Pages: 1702-1712

    • DOI

      10.1111/1365-2435.13574

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The global abundance of tree palms2020

    • Author(s)
      Muscarella R, Emilio T, Phillips OL et al. (Imai N 94/223 persons)
    • Journal Title

      Global Ecology and Biogeography

      Volume: 29 Issue: 9 Pages: 14951514-14951514

    • DOI

      10.1111/geb.13123

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tropical cyclones and island area shape species abundance distributions of local tree communities.2020

    • Author(s)
      Ibanez T, Keppel G, Baider C, Birkinshaw C, Florens FBV, Laidlaw M, Menkes C, Parthasarathy N, Rajkumar M, Ratovoson F, Rasingam L, Reza L, Aiba S, Webb EL, Zang R, Birnbaum P
    • Journal Title

      Oikos

      Volume: 129 Issue: 12 Pages: 1856-1866

    • DOI

      10.1111/oik.07501

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Temperature is a dominant driver of distinct annual seasonality of leaf litter production of equatorial tropical rain forests.2020

    • Author(s)
      Kitayama K., Ushio M., Aiba S.
    • Journal Title

      Journal of Ecology

      Volume: 109 Issue: 2 Pages: 727-736

    • DOI

      10.1111/1365-2745.13500

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nitrogen mineralization rates of the soils incubated under different temperatures from different elevations along an environmental gradient on Yakushima Island2020

    • Author(s)
      Mana Mukai, Taiki Mori, Shin-ichiro Aiba, Kanehiro Kitayama
    • Journal Title

      Ecological Research

      Volume: 35 Issue: 2 Pages: 428-438

    • DOI

      10.1111/1440-1703.12092

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 屋久島原生照葉樹林の40年間の動態2024

    • Author(s)
      相場慎一郎,秦大平,萩原航紀,渡部俊太郎,竹口輝
    • Organizer
      第71回日本生態学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 新北限地におけるブナ孤立林の組成と構成2024

    • Author(s)
      萩原航紀, 相場慎一郎
    • Organizer
      第71回日本生態学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 屋久島照葉樹林の動態:優占樹種に注目して2024

    • Author(s)
      秦大平, 相場慎一郎
    • Organizer
      第71回日本生態学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] キナバル山の標高・土壌傾度における樹木の死亡パターン2024

    • Author(s)
      澤本丈弥, 相場慎一郎, 北山兼弘
    • Organizer
      第71回日本生態学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Structure of Alnus japonica swamp forest including a multi-stemmed shrub, Betula ovalifolia, in eastern Hokkaido2023

    • Author(s)
      Aiba S, Bayarsaikhan D, Funatsu W.
    • Organizer
      第70回日本生態学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Stand dynamics over 15 years in an isolated forest of Fagus crenata at the northern margin of its distribution range in Hokkaido, Japan2022

    • Author(s)
      Aiba S, Abo E, Miyazaki S, Tsuzuki Y, Bayarsaikhan D, Matsui T, Namikawa K.
    • Organizer
      第69回日本生態学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Comparison of ground and drone observations to understand forest structure and dynamics in a subarctic coniferous forest2022

    • Author(s)
      Abo E, Nishimura N, Ebina M, Takeuchi F, Ohno Y, Hara T, Aiba S.
    • Organizer
      第69回日本生態学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 南西諸島の原生的森林の地理的変異を地史と気候から説明する2021

    • Author(s)
      相場慎一郎
    • Organizer
      第28回日本時間生物学会学術大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 屋久島と奄美・沖縄の植物相と植生2021

    • Author(s)
      相場慎一郎
    • Organizer
      屋久島学ソサエティ第9回大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Latitudinal and altitudinal variations across temperate to subtropical forests from southern Kyushu to the northern Ryukyu Archipelago, Japan.2021

    • Author(s)
      Aiba S, Kira Y, Araki K, Imamura F, Ishinuki T, Nagata T, Shimonishi S, Ugawa S, Wakiyama S, Yamada T, Yoneda T, Suzuki E.
    • Organizer
      第68回日本生態学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Tropical forest dynamics over 22 years across elevational and edaphic gradients on Mount Kinabalu, Borneo2019

    • Author(s)
      Aiba, S, Kitayama, K.
    • Organizer
      第29回日本熱帯生態学会年次大会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2025-01-30  

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