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

Weed communities and its dynamics in forest plantations of Sugi(Cryptomeria japonica) and Hinoki(Chamaecyparis obtusa)

Research Project

Project/Area Number 61560157
Research Category

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

Allocation TypeSingle-year Grants
Research Field 林学
Research InstitutionThe University of Tokyo

Principal Investigator

SAKURA Tsuguo  Faculty of Agriculture, University of Tokyo, 農学部(林), 助手 (70012078)

Co-Investigator(Kenkyū-buntansha) TANGE Takeshi  Faculty of Agriculture, University of Tokyo, 農学部(林), 助手 (20179922)
YAMANAKA Ikuo  Faculty of Agriculture, University of Tokyo, 農学部(林), 助手 (50012092)
SUZUKI Makoto  Faculty of Agriculture, University of Tokyo, 農学部(林), 助手 (40012091)
NEGISI Ken'itiroo  Faculty of Agriculture, University of Tokyo, 農学部(林), 教授 (90011824)
Project Period (FY) 1986 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1988: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1986: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsWeed community / Plantations of Sugi and Hinoki / Community dynamics / Community type Growth of planted trees / Stand structure / 林分構造 / 房総半島南部 / 雑草木害 / 造林地の成長状態 / 育林・保育との関係 / 雑草木群落の動態 / スギ / ヒノキ人工造林地 / 植物遷変 / 状態診断 / 植物遷移
Research Abstract

The study was conducted in the forest of Tokyo university in the southern part of the Boso peninsula, to study the weed community and its dynamics in forest plantations of Sugi(Cryptomeria japonica) and Hinoki(Chamaecyparis obtusa). Species composition,structure,etc.of weed community changing with time were investigated mainly in sugi plantations. At the same time, growth status of planted trees,and forest structure were examined.
Weed community in the 79-yr-old Sugi forest stand locating in the warm-temperate zone was composed mainly of evergreen broad-leaf trees and evergreen perennial herbs. The Number of plant species in the 1st-3rd-yr old young stands after clear-cutting has increased remarkably in comparison with stands before clear-cutting. The young stand vegetation after clear-cutting has become abundant in diversity of species. Erechitites hieracifolia which is the annual plant was the dominant species in the 1st-yr old stand after clear-cutting.
Miscanthus sinensis of tall grass type was the most dominant species through out from 2 years to 7 years. The coverage(%) and weight(g) of Miscanthus sinensis which is the most major plants for mowing have increased annually by the mowing of 1 time in a year , in the summer seasons.
The lightness in forest at 16-25 yr-old young stands of canopy closing was very dark. The relative light intensity at the 1m above the ground was from 0.03 up to 3 % . The Number of plant species on the ground was only a few, and total amount of C xH per species was only a little. Few species of plant belong to vine,Lilaceae, Pteridophyta,Orchidaceae,etc. have existed mainly in understory in closed forest.

Report

(4 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • 1986 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 佐倉詔夫: 日本林学会論文集. 98. 317-320 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 佐倉詔夫: 日本林学会関東支部大会発表論文集. 39. 53-56 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 佐倉詔夫: 日本林学会論文集. 99. 391-393 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 佐倉詔夫: 日本林学会関東支部大会発表論文集. 40. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 丹下健: 東京大学農学部演習林報告. 81. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Tsuguo, SAKURA: "Structure of weed communities in two young plantations of Sugi(Cryptomeria japonica) and Hinoki(Chamaecyparis obtusa)" Trans. 98th Meet. Jpn. For. Soc.317-320 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Tsuguo, SAKURA: "Structures of ground floor vegetation before and after clear-cutting in an old forest of Sugi(Cryptomeria japonica)" Trans. 39th Meet. Kanto Br., Jpn. For. Soc.53-56 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Tsuguo, SAKURA: "The ground-floor vegetation berore and after clear-cutting in an old plantation of Suge(Cryptomeria japonica D.Don) -Changes of species composition-" Trans. 99th Meet. Jpn. For. Soc.391-393 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Tsuguo, SAKURA: "Community structure of tree species in a 14-year old Sugi(Cryptomeria japonica D.Don) stands -A comparison between weeded and non-weeded plots-" Trans. 40th Meet. Kanto Br., Jpn. For. Soc.(1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Takeshi, TANGE: "Courses of height growth of Cryptomeria japonica trees planted on a slope -Comparison among the near ridge,the mid-slope and the near bottom in the Tokyo University Forest in Chiba-" Bull. Tokyo Univ. Forests. 81. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 佐倉詔夫: 日本林学会論文集. 99. 391-393 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 佐倉詔夫: 日本林学会関東支部大会発表論文集. 40. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 丹下健: 東京大学農学部演習林報告. 81. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 佐倉詔夫: 日本林学会論文集. 98. 317-320 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 佐倉詔夫: 日本林学会関東支部大会発表論文集. 39. (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 佐倉詔夫: 日本林学会論文集. 99. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] 佐倉詔夫: 日本林学会大会論文集. 98. (1987)

    • Related Report
      1986 Annual Research Report

URL: 

Published: 1987-03-31   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi