河西走廊城镇群体的空间分形研究

本文运用分形理论 ,以典型西部内陆流域———河西走廊的城镇群为例 ,对其规模结构、空间分布进行了研究 ,得出结论认为该区域城镇群体也具有分形特征。其等级规模结构比较松散 ,单个行政区域内 ,城市首位度明显偏大 ,而作为群体考虑则呈弱首位分布 ,核心城市影响力弱 ;城镇群体呈明显的线状分布 ,主要城镇均分布在几条地理要素上 ,即兰新铁路和国道 312线 ,各城镇之间联系不紧密。最后文章就上述分析 ,对其优化城镇群体结构提出了几点建议 :建立河西走廊城镇群发展联盟 ,加大城镇群体间的协作 ;合理选择 ,确立区域中心城市等。

The research on the urban group in Gansu Corridor based on the fractal theory

Taking urban group in Gansu Corridor, this article studies the size distribution and space distribution of urban group in the Western China by the fractal method. The conclusion shows that the distributions take on fractal structure.(1) The size-scale structure is loose; the law of the primate city is too small; the middle town is absent; (2) The space distribution is linear, and the mostly small cities&towns lie on a geographic element which is the Lanxin Railway and 312 National Artery; the capacity of spatial interaction is weak. At last the author proposes some advice for advancing structure of the urban system based on studying result Such as:building the urban group developing union of Gansun Corridor and enlarging the corporation between them;to establish the regional central city through the reasonable selection.