CONFIRMATION OF URBAN FRINGE AREA BASED ON REMOTE SENSING AND MESSAGE ENTROPY——A CASE STUDY OF JINGZHOU,HUBEI PROVINCE

Affected by development of city and countryside,city fringe area is a special economic and geographical unit,and a major area for city spreading.But,the range of city fringe is uncertain and the method of demarcation is qualitative.In this paper,a model of message entropy for land use was established based on the theory of information entropy and the feature of land use in city fringe.As a case of Jingzhou City in Hubei Province,and by using satellite imagery landsat dated of October 2000,the model of information entropy for land use was applied in combination with remote sensing(RS) and geographic information system(GIS) techniques.Through analyzing the distribution characteristics of entropy,the range of city fringe in Jingzhou is confirmed with the entropy values of 60 and 30.Finally,the range with the area of 124.4 km2 including 25 villages is obtained.With this method,the feature of high precision and real time is shown.If the satellite image of the higher resolution and other model were adopted,the precision of partition should be enhanced.