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A research on long-term land use and land cover changes in hilly areas of Laos utilizing aerial photography

Research Project

Project/Area Number 16K01227
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Geography
Research InstitutionKonan University

Principal Investigator

Nakatsuji Susumu  甲南大学, 文学部, 教授 (60431649)

Project Period (FY) 2016-10-21 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords土地利用 / 森林被覆 / 焼畑 / 航空写真 / 米軍偵察衛星写真 / ラオス / 東南アジア / 山地民 / 土地被覆 / 森林 / コロナ衛星画像 / Corona衛星写真 / コロナ衛星写真 / 第2次インドシナ戦争 / ベトナム戦争 / CORONA衛星写真 / 集落 / 戦争 / 衛星画像
Outline of Final Research Achievements

In this study, we revealed long-term land use and land cover changes in a hilly area in Laos since 1945, utilizing aerial photographs and US spy satellite photographs. Many researchers associate forest decline or degradation in Laos with developments since the 1980s, and especially since the economic liberalization that began in the late 1980s. The results of this study suggest that the Second Indochina War (1960-1975) was also an important factor of forest degradation because the exodus of internal refugees during the war had caused reclamation of uncultivated areas in a large scale. In a case of one village, we revealed that even in 1940s and 1950s most of the village land was covered by grass or bush and it was covered forest less than 30%. These results call for reevaluation of how forestland has been lost in Laos.

Academic Significance and Societal Importance of the Research Achievements

本研究はワシントンDCやラオスで対象地域の1945年~2013年の8時点の航空写真や米軍偵察衛星画像を収集し、この間の土地利用・土地被覆の変動を明らかにした。さらに、聞き取り調査を中心とする現地調査からそうした変動が起きた原因を明らかにした。ラオスのみならず、東南アジアに関して、これまで本研究ほど長い期間にわたる土地利用・土地被覆の変動を明らかにした研究はなかった。ラオスの森林に関しては、昔は広大にあったものが近年の経済発展によって急激に減少したという認識が一般的である。本研究は古い航空写真の解析により、こうした認識に再考を迫るものであり、今後も同様の研究の積み上げが望まれる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2019 2018 2016 Other

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

  • [Int'l Joint Research] ラオス国立大学林学部(ラオス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] ラオス国立大学林学部(ラオス)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Land Use and Land Cover Changes during the Second Indochina War and Their Long-Term Impact on a Hilly Area in Laos2019

    • Author(s)
      Susumu Nakatsuji
    • Journal Title

      Southeast Asian Studies

      Volume: 8 Issue: 2 Pages: 203-231

    • DOI

      10.20495/seas.8.2_203

    • NAID

      130007694832

    • ISSN
      2186-7275, 2423-8686
    • Year and Date
      2019-08-22
    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Resettlement programs and highlanders’ reactions in Laos2019

    • Author(s)
      Susumu Nakatsuji
    • Organizer
      International Workshop for the Reorganization of Rural Settlement System
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Changes in land use in Laos during the Second Indochina War2018

    • Author(s)
      Susumu Nakatsuji
    • Organizer
      2018 International Geographical Union Regional Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] ベトナム戦争期におけるラオス山村の土地利用変化2016

    • Author(s)
      中辻 享
    • Organizer
      2016年人文地理学会大会
    • Place of Presentation
      京都大学(京都市左京区)
    • Year and Date
      2016-11-13
    • Related Report
      2016 Research-status Report

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Published: 2016-10-24   Modified: 2022-02-22  

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