广州市不同交通网的可达性差异分析  

Differential Analysis of Accessibility for Different Transportation Network in Guangzhou

作　　者：李煜[1] 张亦汉[1] 李建程 

机构地区：[1]广东财经大学地理与旅游学院,广东广州510320

出　　处：《中山大学学报（自然科学版）》2015年第2期133-140,共8页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家重点基础研究发展规划(973计划)资助项目(2011CB707103);国家自然科学基金资助项目(41301408);广东省自然科学基金资助项目(S2013040016071)

摘　　要：以广州市的地铁、高速公路和普通公路为研究对象,选用加权平均旅行时间为指标,并运用Arc GIS软件,综合分析了不同交通网络的可达性差异。结果表明:各个交通网(包括地铁、高速公路、普通公路和综合交通网络)均以中心城区为核心,主要向北部、东部和南部延伸,越向外围,可达性水平越低,总体上形成从中心向外围的发散型分布格局。由于各个交通网络的分布范围和运行速度等的不同,地铁、高速公路、普通公路和综合交通网络中可达性系数小于1(可达性高于平均水平)的区域有较大的差别,分别为87.59%,58.18%,77.50%和85.17%。同时也发现,行政区内的平均旅行时间差别非常大,如在普通公路网中,增城从化两市的最大最小平均旅行时间可达到79.85 min。Most of previous studies about accessibility focused on single traffic mode.This paper takes the weighted average travel time as an indicator to analyze the accessibility differences by using ArcGIS for three different traffic modes.Different transportation networks,including metro,highways,normal roads and combined networks,show a similar pattern.The area with highest accessibility is in the central urban area with a developed traffic condition.The better accessibility areas extend from center to the north,east and south.Since the distribution and running speed are different in networks,the percentages of area with an accessibility coefficient less than 1 in metro,highways,roads and common integrated transport network are 87.59%,58.18%,77.50% and 85.17% respectively.We also found that the difference of the average travel time is very large in the same district,e.g.,the difference between the maximum and minimum average travel time is 79.85 min in Zengcheng and Conghua.

关 键 词：可达性 不同交通网 加权平均旅行时间 广州市 ARCGIS 

分 类 号：P208[天文地球—地图制图学与地理信息工程]