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Regeneration processes and ecophysiological properties of young growths in the floor of natural forests of deciduous tree species and hiba arborvitae

Research Project

Project/Area Number 03660146
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionIwate University

Principal Investigator

HASHIMOTO Ryoji  Iwate UniV.Agric, Professor, 農学部, 教授 (80109157)

Co-Investigator(Kenkyū-buntansha) SUGITA Hisashi  Iwate Univ. Agric. Assitant Professor, 農学部, 助手 (60154473)
Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1993: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1992: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1991: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordshiba arborvitae / regeneration process / seedling survival / leaf carbon gain / light regime / creeping branch propagation / 森林の更新
Research Abstract

Light compensation points of young growths of hiba arborvitae were in the range of 4 to 6 umol quanta m^<-2> s^<-1> : they do not have particularly lower compensation points but rather higher values compared with other woody species growing on the same forest floors. Between young growths of hiba arborvitae and mizunara oak there were no large differences in the light compensation point, except for the new leaf expansion season. However, light-saturated rates of net photosynthesis were obviously high in hiba arborvitae. Hiba arborvitae young growths, attaching evergreen leaves, performed active photosynthetic production in two seasons, before new foliage emergence and after foliage fall of the overstory deciduous trees, because of the significantly high solar radiant energy reaching under the forest canopy during the seasons. Seedlings of deciduous mizunara oak were heavily shaded throughout the growing season by foliage of the overstory trees, and it resulted in low daily surplus production. From the repeated census of the young growths it was apparently hard for mizunara oak to survive for more than three or five years after germination. In contrast the young growths of hiba arborvitae did not wither and die and their distribution density was rather increased by so called creeping branch propagation. Such growth and development of the hiba arborvitae young growth population would be provided by the resource availability peculiar to under the forest canopy dominated by deciduous trees.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 橋本良二・高橋宏輔・白旗学: "ミズナラ-ヒバ林下に生育する両稚樹の光合成及び呼吸特性" 日本林学会論文集. 104. 549-550 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 佐藤典生・橋本良二: "ヒバ稚樹集団の遺伝変異にもとづく集団形成過程の検討" 日本林学会論文集. 104. 553-554 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 佐藤典生・橋本良二: "尾根部に形成されたヒバ稚樹集団の遺伝変異" 日本林学会東北支部会誌. 45. 165-168 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Ryoji Hashimoto, Hirosuke Takahashi, and Manabu Shirahata: "Photosynthetic and respiratory properties of young growths of mizunara oak and hiba arborvitae in a mizunara oak-hiba arborvitae forest" Transactions of the Japanese Forestry Society. 104. 549-550 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Norio Sato and Ryoji Hashimoto: "Examinations of the developmental process of hiba arborvitae young growthpopulation on the basis of its genetic variation" Transactions of the Japanese Forestry Society. 104. 553-554 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Norio Sato and Ryoji Hashimoto: "Genetic variation by isozyme analysis for hiba arborvitae young growths growing in the mountain ridge area" Tansactions of the Meeting in Tohoku Branch of the Japanese Forestry Society. 45. 165-168 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 橋本良二・高橋宏輔・白旗学: "ミズナラ-ヒバ林下に生育する両稚樹の光合成及び呼吸特性" 日本林学会論文集. 104. 549-550 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 佐藤典生・橋本良二: "ヒバ稚樹集団の遺伝変異にもとづく集団形成過程の検討" 日本林学会論文集. 104. 553-554 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 佐藤典生・橋本良二: "尾根部に形成されたヒバ稚樹集団の遺伝変異" 日本林学会東北支部会誌. 45. 165-168 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 佐藤 典生・橋本 良二: "広葉樹-ヒバ林におけるヒバ稚樹の分散構造" 日本林学会東北支部会誌. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 橋本 良二・高橋 宏輔・白旗 学: "ミズナラーヒバ林下に生育するヒバ稚樹のCO_2収支" 日本林学会論文集. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 佐藤 典生・橋本 良二: "ヒバ稚樹集団の遺伝変異にもとづく集団形成過程の検討" 日本林学会論文集. (1993)

    • Related Report
      1992 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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