关键词: 城镇建设用地扩展, 时空特征, 遥感, GIS, 无锡市

Abstract: With the rapid development of industrialization, the process of urbanization is speeded up, which makes the demand of urban landuse increased and the contradiction in landuse more serious. The paper begins with the analysis of urban and regional landuse spatial information by different kinds of remote sensing images of Wuxi City. Then the features of urban landuse growth in Wuxi City were analyzed, which include the features of temporal process and spatial pattern of urban landuse growth by geography information system. Through the integrated research of the spatialtemporal features of urban landuse growth with the regional naturalness, traffic condition and economy conditions, the phase character and spatial distribution laws of urban landuse growth in Wuxi City were studied. The result shows that urban landuse growth in Wuxi City has distinct phase character since 1978, which reflects the course of urban development and maturily. Owing to the diversity of local nature, traffic, society and economy condition and the leading of policy, spatial distribution of urban construction landuse growth in Wuxi City has distinct diversity and strong centripetalism. The central city landuse growth has distinct leading direction at different period of time. And the central city has so strong attraction and radiation force to the market towns that dominate the direction of landuse growth of the market towns scattered around a certain distance.

Key words: urban construction landuse growth, spatialtemporal feature, remote sensing, GIS, Wuxi City