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Rapid urban expansion of Shenzhen City from 2000 to 2007 based on remote sensing image interpretation. Red color for urban land, yellow for bare land, green for land with vegetation, blue for water body. ETM+ image on November 1st 2000, TM image on September 15th 2000, ETM+ SLC-off composite data on December 7th and November 30th 2007 are used for this comparison.
