武汉城市圈城乡道路网拓扑通达性的时空演化  

SPATIAL-TEMPORAL EVOLUTION OF TOPOLOGICAL ACCESSIBILITY OF URBAN-RURAL ROAD NETWORK IN WUHAN METROPOLITAN AREA

作　　者：刘承良[1,2] 余瑞林[1,2] 段德忠[1] 张红[3] 

机构地区：[1]华中师范大学城市与环境科学学院,湖北武汉430079 [2]湖北大学中国旅游案例教学与研究中心,湖北武汉430062 [3]西南交通大学地球科学与环境工程学院,四川成都610031

出　　处：《长江流域资源与环境》2014年第2期170-179,共10页Resources and Environment in the Yangtze Basin

基　　金：国家自然科学基金项目(41201130;41101361);国家社会科学基金项目(11CJL048)

摘　　要：以武汉城市圈为例，基于1989～2010年加权城乡道路网拓扑空间数据库和网络发育评价模型，对武汉城市圈20多年来城乡道路网发育程度进行动态分析和空间演化的研究。结果表明：20多年来武汉城市圈高速城乡道路网发育程度明显改善，经历了由树状网络回路网络-网络拓展阶段，但路网空间生长尚未饱和，外向拓展和内部充填的潜力较大；通达性重心和中心的空间迁移变化不明显，囿于武汉市城区，宏观上保持高度的稳定性，但其微观格局存在跳跃性和突变性；圈域城乡节点拓扑通达性指数空间分布呈现“不均衡-相对均衡”的动态变化，但整体七仍存在明显的空间分异和集聚；武汉城市圈城乡道路网通达性分布与城乡节点发育、城乡社会经济发展水平密切相关，在空间上已开始打破“核心边缘”的特点，呈现等级圈层发展的趋势。network development and the study were performed on spatial layout alterations of the urban-rural road netwo within the last 20 years in the Wuhan metropolitan area. The study revealed that urban-rural road netwo development level of Wuhan metropolitan area had been improved significantly since 1989 and the development Wuhan metropolitan area experienced the stages of tree net, loop net and net expansion. However, the spat he he rk rk of ial growth of road network was yet saturated, outward expansion and internal filling of urban-rural road network also had high potential. The gravity and center of accessibility was confined to the city of Wuhan with inconspicuous spatial displacement, macroscopically maintained the high stability, but its microscopic pattern had the unevenness and discontinuity. The spatial distribution of urban-rural nodes topological accessibility presented a dynamic change of ＂imbalanced-relatively balanced＂, but overall it still had the obvious spatial differentiation and agglomeration. Closely related to the level of urban-rural nodes growth and socio-economic development, the accessibility distribution of urban-rural road network in Wuhan metropolitan area had started to break the characteristics of core-periphery, presenting rank-circle development trends. With increasingly fierce competition among areas under the background of economic globalization, cities of Wuhan metropolitan area must join forces, laying a solid foundation for integrated development and work together to build a globally competitive region transport system, so as to form the urban-rural integration development relying on a well-developed transportation network. Key words： topological accessibility; spatial-temporal evolution; urban-rural road network; Wuhan metropolitan area

关 键 词：拓扑通达性 时空演化 城乡道路网 武汉城市圈 

分 类 号：F294.3[经济管理—国民经济]