摘要
以上海城市交通网络为例 ,通过不同行政区域交通网络的分维值测算 ,研究了分形特征的空间变化 ;利用上海全域及典型行政区交通网络不同时代的分维 ,研究了分形特征的时间演化。结果表明 ,上海城市交通网络的分形特征在空间域上城区内域明显复杂于外域 ,在城市发展主轴方向上表现为由内向外分维测度值的降低 ;而在时间域 ,近期的交通网络分形复杂度明显高于早期 。
A lot of case researches on the fractal features in traffic network of city by scholars at home and abroad have shown that the fractal feature and fractal dimension will become a relatively ideal and useful indicator to remark the form and property of traffic network in a city. This paper takes the traffic network in Shanghai as a case, the fractal dimension of the traffic network in Shanghai and its districts have been measured and calculated so as to research on the spatial changes of the fractal features. By using the fractal dimension of the network in the city and districts measured and estimated in different periods, the temporal evolution of the fractal features has been investigated. The results have shown that as to the spatial field, the fractal feature of the traffic network in the inner city of Shanghai is more complicated than that in the outer city, and the fractal dimension is gradually decreased from the inner to the outer along the main developing axes of the city. As to the temporal field, the fractal feature and complexity of the traffic network in the recent period is higher than that in the earlier. It is believed that the evolution of fractal dimension can be used to describe and explain the morphological processes of the city explicitly together with other useful urban indicators.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2003年第6期749-753,共5页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目 ( 4 99710 3 1)
关键词
分形理论
城市交通网络
时空演变
上海
fractal theory
fractal in traffic network
tempo-spatial changes
