中文摘要：

认识铁路辐射带经济发展的空间格局对制定相关发展规划、铁路带沿线产业合理布局具有重要意义。以兰渝铁路沿线120 km范围内的主要行政单元为研究对象,选取衡量经济发展的9个指标,运用主成分分析法揭示辐射带经济差异,同时运用GeoDa软件提供的空间分析方法揭示辐射带经济差异的空间特征。分析结果表明：①辐射带经济发展水平存在显著差异,在地理空间上存在集聚性;②铁路的重庆段为铁路经济发展的热点区,辐射带内除重庆外无二级节点城市引导经济发展,重庆的经济辐射能力随距离的增加呈现出明显的衰减效应。基于兰渝铁路辐射带经济空间分异的现状,提出了相应的发展对策。

英文摘要：

It is important to make an analysis on the spatial pattern of the railway economy,which plays a crucial role in making development planning and guiding the industrial distribution.The main counties,within the 120 km areas along the Lanzhou-Chongqing railway,are taken as samples,based on 9 economic indexes,whose spatial differences are analyzed by using SPSS.This article uses the spatial analysis provided by GeoDa to reveal the spatial characteristics of economic differences along the radiation belts.The result shows that there are great disparities within different economic levels,a big gap exists between the numbers of developed areas and undeveloped areas,and the range value of the general score is high.A Geo-spatial agglomeration exists within the study area,which is the developed regions adjacent to the developed regions,and vice versa.Chongqing is the only one ＂hot-spot＂ region of the entire railway economic belt,which has a strong capacity to promote the economic development,and with the distance far from Chongqing,and the economic radiation capacity tens a systematic decline.Lanzhou,another endpoint city,has a weak radiation capacity.There are no node cities to guide the economic development within the study area,except for the endpoint metropolitan areas,so the regional spatial structure displays a model of economic nucleus-cluster.Based on the status of the spatial differentiation of the railway,we find main factors to impact the economic disparities and then several countermeasures and suggestions are put forward,including that node cities should be found in the radiation belt in order to build a point-axis spatial structure,and infrastructure improvement and regional cooperation are necessary to promote the economic development.