STUDY ON URBAN LAND USE CHENGES BASED ON HIGH RESOLUTION REMOTE SENSING IMAGES

摘要

21 century is an era of cities as the trend of urbanization has developed into the theme of globalization. China, as one of the most thickly populated countries will have a deep influence on the world for its urban development. With the help of the remote sensing software (PCI) and the geograhpic information system (ArcGIS) technology, the high resolution remote sensing images (for example aerial photo, IKONNOS, QU1CKBIRD. etc)as basal information source, the present article makes a deep research on the urban land-use types, the urban land-use intensity and the urban land spatial use changes by interpreting the two issues of remote sensing images in 1994 (aerial photo and it's orthography) and in 2002 (IKONOS satellite image) in Shijiazhuang, based on the land-use change model in GIS. Results show: (l)the land-use types' percentage in Shijiazhuang is reasonable, and the function subarea is distinct; (2)during the period, the urban land-use area changed very fast during the period, among which the cultivated land decreased fast, while the green and the water area and residential area increased fast; (3)the comprehensive urban land-use intensity dynamic degree during the 8 years is 1.23%, the building area changes fast, among which the increased dynamic degree of land-use intensity of business and residential area increased are the most fast; (4)the increased building area increased by reconstruction of urban interior is bigger than that increased by urban expanding, the primary urban land-use change in Shijiazhuang has been exploring the latent power during the research period.