Anlysis of Urban Spatial Expansion Characteristics in Xuzhou City

Based on the satellite images and the spatial statistic and analytic function of GIS, the paper calculated the fractal dimension and compactness of urban spatial form of Xuzhou City, analyzed quantificational the spatial differentiation characteristics of urban construction land expansion by the quadrant and buffer analysis method. The results show that the urban quadrant of Xuzhou City land expanded 1.4 times from 1983 to 2013. In the urban range, the core zone of the construction land expansion is the Southwest. However, to the city center, the expansion gravity moved to the southeast. The urban land expansion intensity shows sphere-type mode form the center to the periphery.