Study of Urban Expansion and Driving Forces Based on RS and GIS

Abstract

In the period of rapid urbanization, timely and comprehensively understanding the spatial and temporal characteristics of urban expansion has substantial meaning for the city scientific planning and rational use of land. This paper, using the multispectral image data of“TM” and “Beijing-1” small satellite and based on geographic information system (ArcGIS) data analysis platform, carries out the statistical analysis of builtup area expansion and space variationin Tangshan City, Hebei Province in the recent 20 years from 1988 to 2009;interprets the occupied land-use types during the process of urban expansion; analyzes the impact of urban expansion on land use; extracts the urban road network and analyzes the relationship between urban expansion and road network through the establishment of buffering area and overlay analysis. On this basis, the driving forces of urban expansion are analyzed by integrating the natural condition, economic development, populationgrowth and transportation constructionplan in the Tangshan City, revealing the evolution law of Tangshan City spatial pattern and trends which shall direct the corresponding measurementfor the rational distribution of urban development in the future. Keywords—urban expansion, remote sensing, driving forces, Tangshan City