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Possibility of Reduced Impact Logging (RIL) for sustainable management of Amazonian tropical forest: feasibility study based on growth characteristics by species.

Research Project

Project/Area Number 16H05791
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Forest science
Research InstitutionForest Research and Management Organization

Principal Investigator

KAJIMOTO Takuya  国立研究開発法人森林研究・整備機構, 森林総合研究所東北支所, 支所長 (70353638)

Co-Investigator(Kenkyū-buntansha) 大谷 達也  国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (80353613)
大橋 伸太  国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (70754315)
大澤 晃  京都大学, 地球環境学堂, 教授 (90288647)
諏訪 錬平  国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (40535986)
Research Collaborator SUWA Renpei  
TANAKA Kenzo  
KAGAWA Akira  
ICHIE Tomoaki  
DANNOURA Masako  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywordsアマゾン熱帯林 / 択伐施業 / 成長解析 / バイオマス / 安定同位体 / 森林回復 / 熱帯林 / 択伐林施業 / 成長様式 / 同位体分析 / アマゾン / 同位体比分析
Outline of Final Research Achievements

Low-intensity selective logging, so-called Reduced Impact Logging (RIL), is considered one of effective ways for sustainable management of tropical forests in Amazon where deforestation mainly due to illegal logging still continues. RIL might contribute to both ecosystem conservation and sustainable timber production. To evaluate possibility of RIL (e.g., logging intensity, logging cycle), we have conducted feasibility study at the logging forests in central Amazon, Brazil, where RIL was applied by the private company. First, we examined processes of post-logging forest recovery, and found that aboveground biomass could be returned back to the pre-logging level within the planned logging cycle (25 years). Second, we measured stem diameter growth at the individual level for some tree species, and estimated mean annual growth rates by species. The data analysis indicated that sustainable wood production could also be achieved for some major timber species.

Academic Significance and Societal Importance of the Research Achievements

本研究では、ブラジル領・中央アマゾンで民間会社が試みる低インパクト型の択伐施業(RIL)について、森林資源を持続的に利用、管理する上でその施業基準が有効なことを、回帰年数など基準の一部ではあるが実測データに基づき確認することができた。この成果は、ブラジル政府による熱帯林の保全や利用に関する政策に、科学的な根拠のひとつとして活用されることが期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (6 results)

All 2018 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (3 results)

  • [Int'l Joint Research] ブラジル国立アマゾン研究所(INPA)(ブラジル)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ブラジル国立アマゾン研究所(INPA)(ブラジル)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Recovery of above-ground tree biomass after moderate selective logging in a central Amazonian forest2018

    • Author(s)
      Otani T, Lima AJN, Suwa R, Amaral MRM, Ohashi S, Pinto ACM, Santos JD, Kajimoto T, Higuchi N, Ishizuka M
    • Journal Title

      iForest-Biogeosciences and Forestry

      Volume: 11(3) Issue: 3 Pages: 352-359

    • DOI

      10.3832/ifor2534-011

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] アマゾン熱帯雨林における択伐後のバイオマス回復過程2018

    • Author(s)
      大谷達也、アドリアーノ・リマ、諏訪錬平、大橋伸太、梶本卓也、ニーロ・ヒグチ
    • Organizer
      第65回日本生態学会
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
  • [Presentation] 熱帯樹木の成長特性2018

    • Author(s)
      大橋伸太
    • Organizer
      日本木材学会「組織と材質研究会シンポジウム」
    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
  • [Presentation] 酸素安定同位体比で見るアマゾン熱帯樹木の不連続輪 -それは年輪なのか?偽年輪なのか?-2018

    • Author(s)
      大橋伸太、フラビア・ドウルガンテ、香川聡、大谷達也、諏訪錬平、梶本卓也、ニーロ・ヒグチ
    • Organizer
      年輪研究会
    • Related Report
      2018 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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