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Clarifying factors affecting above-ground floristic composition and soil seed banks for the conservation and restoration of plant species in rice paddy fields

Research Project

Project/Area Number 19780030
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Horticulture/Landscape architecture
Research InstitutionThe University of Tokyo

Principal Investigator

YAMADA Susumu  The University of Tokyo, 大学院・農学生命科学研究科, 助教 (30450282)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥2,570,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywords農業生態系 / β多様性 / 空間分布 / 雑草群落 / 絶滅危惧植物 / 田植え時期 / 圃場内生物多様性 / 耕作放棄年数 / 水田 / 水田雑草 / 自然立地 / 圃場整備 / 茨城県 / 鬼怒川・小貝川 / 谷底低地 / 旧河道 / 耕作放棄水田 / 水田生物多様性 / 景観構造 / 微地形
Research Abstract

Cultivated and abandoned paddy field are floristically highly diverse, but the mechanisms affecting this diversity are not clear. The following studies were carried out. First, field surveys in cultivated rice paddy fields showed that influence of land improvement intensity on floristic composition was different among different land form types. This study also implied the importance of the period of rice harvest as a factor controlling floristic composition. A germination test was, hence, carried out using surface soils of a cultivated rice paddy. The results suggest that floristic composition just after the crop harvest in autumn was strongly different according to the timing of rice harvest, while in the subsequent spring floristic composition was less affected by the timing of rice harvest in the previous year. As the third study topic, floristic composition in the soil seed banks was investigated along a chronosequence in abandoned paddy fields, where soil seed banks of rare wetland floristic species are often maintained in the surface soils. This study illustrates that duration of abandonment clearly decreased the number of wetland species, whereas no less than half species observed in the start of abandonment persisted in the seed banks under germinable condition.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (20 results)

All 2010 2009 2008

All Journal Article (7 results) (of which Peer Reviewed: 4 results) Presentation (12 results) Book (1 results)

  • [Journal Article] Landform type and land improvement intensity affect floristic composition in rice paddy fields from central Japan2010

    • Author(s)
      Yamada S、Kusumoto Y、Tokuoka Y、 Yamamoto S
    • Journal Title

      Weed Research in press(Article first published online: 24 AUG 2010, DOI: 10.1111/j.1365-3180.2010.00815.x)

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] 関東地方南部の水田における非栽培期の植物相に及ぼす水稲収穫時期の影響2010

    • Author(s)
      山田晋
    • Journal Title

      ランドスケープ研究 73

      Pages: 417-420

    • NAID

      130000992016

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] 関東地方南部の水田における非栽培期の植物相に及ぼす水稲収穫時期の影響2010

    • Author(s)
      山田晋
    • Journal Title

      ランドスケープ研究 73(印刷中)

    • NAID

      130000992016

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Landform type and land improvement affect floristic composition in rice paddy fields from central Japan2010

    • Author(s)
      Yamada S.Kusumoto Y.Tokuoka Y.Yamamoto S.
    • Journal Title

      Weed Research (採用決定)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Trajectory of a restoration activity in a Satoyama landscape and change on biological diversity due to the activity2008

    • Author(s)
      Yamada S
    • Journal Title

      Proceedings of preservation of biocultural diversity-a global issue

      Pages: 50-56

    • Related Report
      2009 Final Research Report
  • [Journal Article] Landscape heterogeneity enhances the diversity of paddy weed species in a lowland area of Japan2008

    • Author(s)
      Yamada S、Kusumoto Y、Tokuoka Y、 Yamamoto S
    • Journal Title

      CBDtechnical series 34

      Pages: 102-107

    • Related Report
      2009 Final Research Report
  • [Journal Article] Landscape Heterogeneity enhances the diversity of paddy weed species in a lowland area of Japan.2008

    • Author(s)
      Yamada. S. Kusumoto Y. Tokuoka Y. Yamamoto S.
    • Journal Title

      CBD technical series 34

      Pages: 102-107

    • Related Report
      2007 Annual Research Report
  • [Presentation] Landform condition and land improvement affect floristic composition in rice paddy fields, central Japan2009

    • Author(s)
      Yamada S 、Kusumoto Y、Tokuoka Y、 Yamamoto S
    • Organizer
      Marco symposium
    • Place of Presentation
      Tsukuba Japan
    • Year and Date
      2009-10-02
    • Related Report
      2009 Final Research Report
  • [Presentation] Landform condition and land improvement affect floristic composition in rice paddy fields, central Japan2009

    • Author(s)
      Yamada S.Kusumoto Y.Tokuoka Y.Yamamoto S.
    • Organizer
      Society for Ecological Restoration
    • Place of Presentation
      Perth, Australia
    • Year and Date
      2009-10-02
    • Related Report
      2009 Annual Research Report
  • [Presentation] A comparative study of the seed banks of abandoned paddy fields along a chronosequence in Japan2009

    • Author(s)
      Yamada S
    • Organizer
      Society for Ecological Restoration
    • Place of Presentation
      PerthAustralia
    • Year and Date
      2009-08-25
    • Related Report
      2009 Final Research Report
  • [Presentation] A comparative study of the seed banks of abandoned paddy fields along a chronosequence in Japan2009

    • Author(s)
      山田晋
    • Organizer
      Society for Ecological Restoration
    • Place of Presentation
      Perth, Australia
    • Year and Date
      2009-08-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] 農村の耕地植生における生物多様性管理2009

    • Author(s)
      山田晋
    • Organizer
      平成21年度日本造園学会全国大会
    • Place of Presentation
      明治大学 東京
    • Year and Date
      2009-05-25
    • Related Report
      2009 Final Research Report
  • [Presentation] 農村の耕地植生における生物多様性管理2009

    • Author(s)
      山田晋
    • Organizer
      日本造園学会全国大会
    • Place of Presentation
      明治大学, 東京
    • Year and Date
      2009-05-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] 稲刈り時期はその後の雑草群落発達にどの程度影響を及ぼすか2009

    • Author(s)
      山田晋、楠本良延、徳岡良則、山本勝利
    • Organizer
      第56回日本生態学会全国大会
    • Place of Presentation
      岩手県立大学 盛岡
    • Year and Date
      2009-03-18
    • Related Report
      2009 Final Research Report
  • [Presentation] 水田生態系における景観スケールの立地区分と植物相の対応に関する事例研究2009

    • Author(s)
      荒金恵太、大久保悟、山田晋、北川淑子、大黒俊哉、武内和彦
    • Organizer
      第56回日本生態学会全国
    • Place of Presentation
      岩手県立大学 盛岡
    • Year and Date
      2009-03-18
    • Related Report
      2009 Final Research Report
  • [Presentation] 水田生態系における景観スケールの立地区分と植物相の対応に関する事例研究2009

    • Author(s)
      荒金恵太・大久保悟・山田晋・北川淑子・大黒俊哉・武内和彦
    • Organizer
      日本生態学会
    • Place of Presentation
      岩手県立大学(岩手県)
    • Related Report
      2008 Annual Research Report
  • [Presentation] 稲刈り時期はその後の雑草群落発達にどの程度影響を及ぼすか2009

    • Author(s)
      山田晋・楠本良延・徳岡良則・山本勝利
    • Organizer
      日本生態学会
    • Place of Presentation
      岩手県立大学(岩手県)
    • Related Report
      2007 Annual Research Report
  • [Presentation] 広域スケールの環境要因が耕作水田の成立植生に及ぼす影響2008

    • Author(s)
      山田晋、楠本良延、徳岡良則、山本勝利
    • Organizer
      第55回日本生態学会全国大会
    • Place of Presentation
      福岡国際会議場 福岡
    • Year and Date
      2008-03-15
    • Related Report
      2009 Final Research Report
  • [Presentation] Trajectory of a restoration activity in a Satoyama landscape and change on biological diversity due to the activity2008

    • Author(s)
      Yamada S
    • Organizer
      International symposium : Preservation of b iocultural, diversity-a global issue
    • Place of Presentation
      Vienna, Austria
    • Related Report
      2008 Annual Research Report
  • [Book] 身近な自然の保全生態学(根本正之編)(里山と谷津田の生物多様性)2010

    • Author(s)
      山田晋
    • Publisher
      培風館、東京
    • Related Report
      2009 Final Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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