作成者 Hirano, Akira, Saito, Genya, Mino, Nobuyuki
日本十進分類法 (NDC) 450.9248
内容 研究概要:A comparison was made between a land use map derived from remote sensing data and an existing land use map. A GIS (Geographic Information System) was implemented to evaluate the land use change of the Camiling district, Luzon island, the Philippines. Deforestation in the study area was monitored. Soil/Vegetation matrix method was used to create land use map from MOS-1/MESSR data. Satellite data taken during the dry season and the rainy season, respectively, in the study area were used to make the classification more accurate. Following procedures were taken for both satellite images taken during the dry season and during the rainy season in 1990, Pixels of the image were classified according to their VCR (Vegetation Coverage Ratio) and SDI (Soil Dryness Index) using a matrix. Classified images derived from two different seasons were then logically related to each other to generate the satellite-derived land use map. Land use information was extracted from an existing topographic map published in 1977. The information was then input to a GIS (Geographic Information System). Land use maps of two different times were logically overlaid onto each other to evaluated the land use change happened during the period. Clear decrease in forest area, namely deforestation was monitored. Forest area in the Camiling district was about 457 km^2 in 1977, whereas it was about 246 km^2 in 1990. It had shrunk by about 48 percent. Spatial analysis of this area showed that 45 percent of the ex-forest area turned into paddy field.
コンテンツの種類 研究報告書 Research Paper
DCMI資源タイプ text
掲載誌情報 Proceedings of the international symposium on Vegetation Monitoring page.259-266 (1995)
言語 英語

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