論文

査読有り
2018年9月

JAXA High-Resolution Land Use/Land Cover Map for Central Vietnam in 2007 and 2017

REMOTE SENSING
  • Phan Cao Duong
  • ,
  • Ta Hoang Trung
  • ,
  • Kenlo Nishida Nasahara
  • ,
  • Takeo Tadono

10
9
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.3390/rs10091406
出版者・発行元
MDPI

Robust remote monitoring of land cover changes is essential for a range of studies such as climate modeling, ecosystems, and environmental protection. However, since each satellite data has its own effective features, it is difficult to obtain high accuracy land cover products derived from a single satellite's data, perhaps because of cloud cover, suboptimal acquisition schedules, and the restriction of data accessibility. In this study, we integrated Landsat 5, 7, and 8, Sentinel-2, Advanced Land Observing Satellite Advanced Visual, and Near Infrared Radiometer type 2 (ALOS/AVNIR-2), ALOS Phased Array L-band Synthetic Aperture Radar (PALSAR) Mosaic, ALOS-2/PALSAR-2 Mosaic, Shuttle Radar Topography Mission (SRTM), and ancillary data, using kernel density estimation to map and analyze land use/cover change (LUCC) over Central Vietnam from 2007 to 2017. The region was classified into nine categories, i.e., water, urban, rice paddy, upland crops, grassland, orchard, forest, mangrove, and bare land by an automatic model which was trained and tested by 98,000 reference data collected from field surveys and visual interpretations. Results were the 2007 and 2017 classified maps with the same spatial resolutions of 10 m and the overall accuracies of 90.5% and 90.6%, respectively. They indicated that Central Vietnam experienced an extensive change in land cover (33 18% of the total area) during the study period. Gross gains in forests (2680 km 2 ) and water bodies (570 km 2 ) were primarily from conversion of orchards, paddy fields, and crops. Total losses in bare land (495 km 2 ) and paddy (485 km 2 ) were largely to due transformation to croplands and urban & other infrastructure lands. In addition, the results demonstrated that using global land cover products for specific applications is impaired because of uncertainties and inconsistencies. These findings are essential for the development of resource management strategy and environmental studies.

リンク情報
DOI
https://doi.org/10.3390/rs10091406
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000449993800086&DestApp=WOS_CPL
ID情報
  • DOI : 10.3390/rs10091406
  • ISSN : 2072-4292
  • eISSN : 2072-4292
  • Web of Science ID : WOS:000449993800086

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