The Urbanization Model and Process in Bohai Sea Surrounding Area in the 1990s by Using DMSP/OLS Data
Received date: 2004-09-02
Revised date: 2005-02-03
Online published: 2005-05-25
Supported by
Young Teacher Foundation of Beijing Normal University, No.10770001
The paper firstly derived urban information from Defense Meteorological Satellite Program/Operational Linescan System (DMSP/OLS) data in 1992, 1996 and 1998 with the support of statistical data, then developed three basic urbanization models of polygon-urbanization, line-urbanization and point-urbanization in urban agglomerations from viewpoint of spatial analysis. The conclusions are as follows: (1) Urban patch numbers in the Bohai Sea surrounding area increased from 1659 to 2053 with the average increased number of about 66. Meanwhile, the small urban patches took over a large percentage in the region and the patch density increased fast. In addition, the urban barycenter of the region showed the trend to northeast from 1992 to 1998. The urbanization in the Bohai Sea surrounding area in the 1990s is fast and obvious. (2) The urbanization in the Bohai Sea surrounding area can be reflected by the polygon-urbanization around the big cities, the line-urbanization around the transportation lines and the point-urbanization emerging in the wide region. Of them, the polygon-urbanization was dominant. It is obvious within the 3-4 km areas surrounding the urban patches. The line-urbanization and point-urbanization in the region was relatively small, but both of them showed the obvious increasing trend.
Key words： DMSP/OLS; Bohai surrounding area; urbanization; model; process
HE Chunyang, LI Jinggang, CHEN Jin, SHI Peijun, PAN Yaozhong, LI Jing, ZHUO Li, Ichinose Toshiaki . The Urbanization Model and Process in Bohai Sea Surrounding Area in the 1990s by Using DMSP/OLS Data[J]. Acta Geographica Sinica, 2005 , 60(3) : 409 -417 . DOI: 10.11821/xb200503007
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