中文摘要：

总结城镇体系空间结构的三种分形维数：聚集维数、网格维数和空间关联维数,并采用此方法计算内蒙古城镇体系空间结构的特征。结果表明：内蒙古城镇体系具有以＂双核＂城市为中心发展的分形特征,内蒙古地区89个城镇除了东部地区呼伦贝尔市、通辽市、赤峰市等3个市和锡林郭勒盟的部分城镇以外,其余西部地区的城镇主要围绕呼包二市为中心向四周密度衰减分布（聚集维数为1.133、1.279,容量维（0.156）和信息维（0.150））,并且12个城市之间公路交通网络比较发达,城市集中在省级大通道分布,系统通达性较好（牛鸦维数比0.966）。

英文摘要：

In the paper,three kinds of fractal dimensions were summed up to characterize spatial structure of urban systems which were respectively named as aggregation dimension,grid dimension,and spatial correlation dimension and character of spatial structure of urban system of Inner Mongolia was calculated by these methods.The results show that develement of urban system of Inner Mongolia had the fractal character of ＂two kernel＂center city.The aggregation dimension（center on Hohhot city：1.133,center on Baotou city：1.279）,content dimension（0.156） and information dimension（0.150） show that cities and towns in west distributed mainly around Hohhot and Baotou as the character of decreasing of density except Hulunbeier city,Tongliao city,Chifeng city and some towns of Xilinguole League in east.The Bovine Crow dimension ratio（0.966）shows also that highway traffic network between twelve cities was developing well and cities distributed around provincial major channel.