Patch-based assessments of shifting cultivation detected by Landsat time series images in Myanmar

Katsuto Shimizu, Tetsuji Ota, Nobuya Mizoue, Shigejiro Yoshida

研究成果: ジャーナルへの寄稿記事

抄録

Shifting cultivation is a widely practiced agriculture system in the tropics. Regardless of the dominant land use, the dynamics of shifting cultivation over large areas are of limited knowledge. We conducted patch-based assessments and characterization of shifting cultivation extracted from already developed dataset, which detected shifting cultivation by a trajectory-based analysis using annual Landsat TM/ETM+/OLI time series images from 2000 to 2014 in Myanmar. An accuracy assessment was conducted in terms of the size and number of cleared areas compared with reference polygons of shifting cultivation, which were manually delineated by visual interpretation using Landsat and high-resolution satellite images from Google Earth™ in the selected areas. The producer's and user's accuracies in detecting the number of shifting cultivation patches were 78.1% and 88.4%, respectively. In whole study area, the probability of disturbances caused by shifting cultivation was significantly affected by distance to the nearest village, indicating the importance of accessibility from residences. The number of shifting cultivation patches showed a decreasing trend in this region and it will lead to less cleared forests such as located far from residences. These dynamics of shifting cultivation have possibility to affect the mosaic patterns of landscape and function maintained in the landscape in this region.

元の言語英語
記事番号3350
ジャーナルSustainability (Switzerland)
10
発行部数9
DOI
出版物ステータス出版済み - 9 19 2018

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shifting cultivation
Myanmar
Landsat
time series
Time series
tropics
search engine
producer
land use
village
agriculture
interpretation
Tropics
trend
accuracy assessment
polygon
Land use
Landsat thematic mapper
accessibility
Agriculture

All Science Journal Classification (ASJC) codes

  • Geography, Planning and Development
  • Renewable Energy, Sustainability and the Environment
  • Management, Monitoring, Policy and Law

これを引用

Patch-based assessments of shifting cultivation detected by Landsat time series images in Myanmar. / Shimizu, Katsuto; Ota, Tetsuji; Mizoue, Nobuya; Yoshida, Shigejiro.

:: Sustainability (Switzerland), 巻 10, 番号 9, 3350, 19.09.2018.

研究成果: ジャーナルへの寄稿記事

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abstract = "Shifting cultivation is a widely practiced agriculture system in the tropics. Regardless of the dominant land use, the dynamics of shifting cultivation over large areas are of limited knowledge. We conducted patch-based assessments and characterization of shifting cultivation extracted from already developed dataset, which detected shifting cultivation by a trajectory-based analysis using annual Landsat TM/ETM+/OLI time series images from 2000 to 2014 in Myanmar. An accuracy assessment was conducted in terms of the size and number of cleared areas compared with reference polygons of shifting cultivation, which were manually delineated by visual interpretation using Landsat and high-resolution satellite images from Google Earth™ in the selected areas. The producer's and user's accuracies in detecting the number of shifting cultivation patches were 78.1{\%} and 88.4{\%}, respectively. In whole study area, the probability of disturbances caused by shifting cultivation was significantly affected by distance to the nearest village, indicating the importance of accessibility from residences. The number of shifting cultivation patches showed a decreasing trend in this region and it will lead to less cleared forests such as located far from residences. These dynamics of shifting cultivation have possibility to affect the mosaic patterns of landscape and function maintained in the landscape in this region.",
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