中文摘要：

为了揭示矿区土地利用结构的空间行为和迁移状况,以徐州城北矿区3期遥感数据为数据源,利用GIS空间分析技术,选取土地利用形状分维数、计盒维数、半径维数、分枝维数4个指标对3个时期（1978年、2000年和2011年）矿区土地利用结构的复杂程度、稳定程度、空间占比、衰减状况和相互渗透程度进行多角度分析。结果表明,矿区土地呈现明显的分形特征,由于煤炭资源的开采、复垦项目的实施和城市化进程的加快,各地类的分形特征均发生了不同程度的变化：5种土地利用类型中,水域和耕/园地受煤炭开采和复垦活动的扰动较大,形状分维数和分枝维数均呈现先增加后降低的趋势,而城镇/工矿用地受城市化进程的影响,形状分维数持续增大,趋于不稳定;由于煤炭资源的开采,占用了大量耕地,使原本规整的耕地变得支离破碎并形成零星的塌陷积水区,使耕/园地的计盒维数和半径维数降低,而由于复垦项目的实施,使得水域斑块面积增大,使水域的计盒维数和半径维数增大;相关分析结果表明4个指标中计盒维数与半径维数和形状分维数与分枝维数两两间存在较弱的相关性。综上所述,煤炭资源的开采、矿区土地复垦和城市化是区域土地利用分形特征与结构稳定变化的主要驱动因素。

英文摘要：

With the rapid development of economy and society, a series of ecological and environmental problems（e.g., land damage, surface subsidence, stagnant water and soil pollution） became increasingly serious in some mining area such as Xuzhou, Jiangsu province. In addition, resources shortage also becomes more and more severely. The land reclamation and ecological reconstruction might act as an important resolution in solving human-land conflict and improving ecological environment. However, the land use structures, and hence the fractal feature of land, are becoming more and more affected due to coal mining, land reclamation and urbanization. In order to reveal the spatial behavior and the dynamics of land use in the northern coal mining area in Xuzhou, three scenes of Landsat images were collected in the years of 1987, 2000 and 2011. Four fractal exponents（the patch shape fractal dimension, box-counting dimension, radius dimension and ramification dimension） were analyzed from several aspects. The complexity, stability, space occupation ratio, attenuation and mutual penetration were investigated by using GIS. The analysis results indicate that fractal features of land use are obviously in the coral mining area in Xuzhou city. On the other hand, the fractal features of different kinds of land use type have changed in the process of coal mining, land reclamation and urbanization. To be specific, both the patch shape, fractal dimension and the ramification dimension show the increasing trend firstly, and then decreasing, which is influenced by coal exploitation and land reclamation. The patch shape fractal dimension has been increasing and tends to be unstable, which is affected by the urban land development in the urban and mining areas; The box-counting dimension and the radius dimension in farmlands showed an increasing trend owing to fragmented landform and sporadic subside seeper area due to the coal exploitation. Additionally, the box-counting dimension and the radius dimension of the water area showed an