Influencing Mechanism Of Traffic Development On Spatial Evolution Of Xuzhou City

As one of the importan ttraffic hub cities in China,Xuzhou is located in the junction of Longhai Railway and the Beijing-Shanghai line with lots of national roads surrounded and the old Yellow River passes through the city.The traffic development of Xuzhou has a big influence on the urban spatial evolution because the traffic is both infrastructure and transportation industry.There are three levels in this paper to explore the influence of traffic development on Xuzhou urban spatial evolution.The macro level through the analysis of the influence of traffic changes on the spatial pattern of Xuzhou by using text analysis and geographical maps;The meso level explores the influence of traffic on the city scale,the urban expansion and the urban morphology by comparing with the traffic line extension and the extension of urban land by calculating the travel radius;The micro level investigate the effect of three types of traffic on urban functional space by using the buffer zone analysis method and extracting three types of land including commercial land,residential land and industrial land and three types of traffic trunk including the waterway,the railway and the driveway from the actuality map of Xuzhou City from 1984 to 2013.The results are as follows:Firstly,The main traffic axis of Xuzhou City was from the Bian River and the Si River to the Grand Canal,to Jin-Pu Railway and the Longhai Railway and to the comprehensive development of multi traffic now.Towns along the main lines of communication are developing stronger and attracting population,economies and industries.Secontly,People are traveling faster and the city area continues to expand by the update of transportation.With the improvement of the road network and the traction of traffic lines,the development focus of Xuzhou was from the south-west to the south and to the east.By calculating the urban expansion intensity index,fractal dimension and the compactness and comparing with the urban roads network,the urban land is experiencing the progress of “expansion-filling-re-expansion-re-filling”.Thirdly,as a whole,different traffic modes have different effects on different functional land use.In the city,60%-70% of the lands are located near the main lines of communication.Since the founding of the country,Xuzhou as a typical coal resources city,the railway has the biggest attraction mainly to the industrial lands;Since the late 1990 s,Xuzhou began to transition,the driveway and the waterway have more influence in the industrial and residential land;The urban function land has been effected obviously by the driveway in recent years.Lastly,aiming at the problems about blocking the traffic line,the hysteresis of public traffic,unreasonable urban function layout and the lack of attractions of the Guanyin International Airport,this paper presents relevant measures: strengthening the urban internal communication,structuring efficient public transport system,optimizing function space and improving comprehensive traffic network.