Evaluation Of Accessibility And Spatial Characteristics Of Land Transportation Network In Guangxi

Traffic is an important way to connect different regions,and it carries on the circulation of various social resources,which is an important factor to promote regional economic and social development.Guangxi Zhuang Autonomous Region as a developing region,that the economy and society are in a period of rapid development,transportation network has profound influence on the formation and development of Guangxi urban space,especially highway transportation and railway transportation.Firstly,road and rail are chosen as the object of study;Secondly,the methods of literature research,mathematical analysis,comparative study,quantitative analysis and qualitative analysis are used;Thirdly,from the Guangxi Statistical Yearbook(2016),we collected the relevant data of eight indicators,such as the resident population in Guangxi,the regional GDP,the investment in fixed assets,and the total retail sales of social consumption;Fourthly,collect highway traffic network above the county level and the railway traffic network from the map of the electronic network,which is corrected with the latest map and related data vectorization and assignment;Fifthly,by using three models of weighted average travel time model,based on the accessibility model of time matrix and potential model,select Guangxi 87 counties as sampling node city(town),to calculate the weighted average travel time accessibility index,time weighted access index,potential accessibility index;Finally,in order to compare the accessibility of traffic networks in Guangxi,the index is transformed into visualization results by spatial interpolation method.The results showed that: In railway transportation network,the accessibility of node city has the directionality of high-speed railway;In the highway network,there is no obvious directivity,but it is affected by the geographical location of Guangxi traffic network;In the integrated transportation network,it has shown that the cities of Laibin,Guigang and Nanning have better accessibility.It is suggested that the industrial development center of Guangxi should be rationally adjusted.Firstly,Strengthen the positioning of Laibin,which is the undertaking place of Liuzhou industrial industry and Guangxi comprehensive trade logistics center.Secondly,Strengthen the economic development of Guangxi Beibu Gulf Economic Zone,especially Beihai.Thirdly,In order to achieve coordinated regional development in Guangxi,traffic network in West Guangxi should be speeded up.