Urban Environmental Research of Hiroshima by LANDSAT MSS Data (Ⅰ)

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  • LANDSATデ-タによる広島の都市環境調査 (Ⅰ)
  • LANDSAT データ ニヨル ヒロシマ ノ トシ カンキョウ チョウサ 1

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The study researches the correlation between land cover components extracted quantitatively from LANDSAT MSS digital data and the land use components obtained quantitatively from 1: 25，000 Land Use maps in and around Hiroshima city. The mesh analysis was applied to the test area with Land Use maps edited in 1971 and 1972 by the Geographical Survey Institute and geographically corrected LANDSAT MSS digital data，taken on 8th Oct. 1972. The mesh analysis is based on the ratio data in the unit area of a so-called 500 meters mesh. The land use data were extracted manually by the dot method，and the land cover data were done automatically by M-DAS (Multi-spectral Data Analysis System). From the results of the study，the geographical distributions of densely built-up area，residential area and paddy field and grass made from Land Use maps were more than those computed from LANDSAT data. On the other hand，the geographical distribution of forest and woody park made from LANDSAT data was more than what came from the Land Use maps，and also the correlation coefficient was better than the others.

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