基于分枝维数算法的西安市旅游通达性研究

An Investigation on the Traveling Transportation Accessibility of Xi'an Area Based on the Dendrite-Dimension Algorithm

运用分枝维数对西安市的旅游交通网络结构的整体性能进行计算,结果表明西安市的旅游交通网络分维D=1.506,比北京、武汉、上海、郑州、重庆的交通网络分维值都低,说明西安市旅游交通网通达性低,路网分布不均衡。与中国一些枢纽城市和主要旅游城市的交通路网状况相比,西安还有很大差距,在西部城市中也不居于优势地位,主要体现在东部和西部路网密度较大,结构复杂,南部和北部线路稀疏,结构简单;城市中心交通发展相对完善,腹地网络发育水平比周边低,整体结构较差。还需进一步增强交通路网的网络密集程度,提高路网连通性。

The authors carry out the computation of Xi＇ an＇ s transportation network using the dendrite - dimension and survey the overall performance of its network structure. The result indicates that, the D value, namely, the dendrite- dimension of Xi＇an＇s transportation network is 1. 506, is the lowest when compared to that of Beijing, Wuhan, Shanghai, Zhengzhou, Chongqing and Chengdu. It shows that Xi＇an＇s traveling accessibility condition still has a very big disparity with some key traveling cities in China. Also, it is at the inferiority position among several west cities of China. It mainly precipitate that, in the east and west part the road network density is high, the structure is complex, but in the south and north part the line is sparse, and the structure is simple; and the urban center transportation development is comparatively complete, but the back - land network level is lower than peripheral areas, the overall construction is inferior as expected. It needs to further strengthen the density of the transportation network, and enhance it＇s accessibility.