THE CHARACTERS AND FACTORS OF TEMPORAL-SPATIAL EVOLUTION OF ROAD NETWORK IN WANJIANG CITY BELT
利用2002-2008年数据，通过增长率、密度等指标分析皖江城市带路网时空演变，发现路网等级偏低但持续提升，沿江和高速沿线是客货运增长重点，并探讨自然、经济、人口、投资和政策等影响因素。
Selected the historical data of total length of highway,road passenger traffic,road freight traffic and population,area,economic data in Wanjiang city belt from 2002 to 2008.This paper studied the temporal and spatial evolution of road network in Wanjiang city belt by comparing the annual growth rate,change ratio,highway density,location quotient,etc.On the whole,the road hierarchy in Wanjiang city belt is low and still mainly of class Ⅳ and highway below class Ⅳ.From the time-varying point of view,the total trend is lifting,and it growth faster after 2005.The cities along the Yangtze River and He-Chao-Wu and Wu-Xuan expressway are the important areas in the growth of road passenger traffic and road freight traffic.Finally,this paper analyzed the factors cause the changes of road network in Wanjiang city belt from natural conditions,economy,population,investment and policy.