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中文摘要：
基于1989-2011年武汉城市圈城乡道路网拓扑空间数据库,引入复杂网络统计特征量对武汉城市圈城乡道路网系统结构的空间异质性及其演化规律进行实证研究.武汉城市圈城乡道路网各拓扑指标值差异日益缩小,节点关联作用存在明显的空间异质化：节点度值空间分布较均匀,呈现点状特征和弱集聚性,表现出一定的“中心—边缘”和“等级圈层”的复合结构;节点紧密度值差异日益缩小,空间渐趋均衡化和离散化,也呈现典型的等级圈层格局;节点介数分布向心极化明显,但存在一定离心化趋势,呈侧“N”形伸展;节点平均路径长遵循距离衰减律,具有明显的时间惯性,与圈域城镇体系空间“靶形分布”一致;网络的集聚性空间差异显著,高簇系数节点空间弱集聚成半月形展布,低簇系数节点分布则较为离散,整个网络在空间上社团性比较明显,社团的等级规模差异较大.
英文摘要：
Based on urban-rural road network topological space database in Wuhan metropolitan area （ WMA）, the complex network statistical characteristics are introduced and then spatial heterogeneity and its evolu- tion on topological structure of urban-rural road network （URRN） in Wuhan metropolitan area are performed. The study reveals that during 1989--2011, the differences among topological indexes of URRN had been shrinking but spatial heterogeneity still obviously exists on nodes connection. With punctual characteristics and weak gathering, spatial distribution of nodes degree values is uniform and certainly displays a composite construction of center-pe- riphery and rank-circle level. Differences among nodes closeness values reduces gradually, the spatial distribution tends to be equalizing and discretization and also presents the typical rank-circle level pattern. Spatial distribution of nodes betweenness values is concentric significantly, but there is a centrifugal tendency, the distribution takes the form of side-stretch ＂N＂. Average path length of nodes follows the distance decay rule, has obvious time iner- tia, and is consistent with the target distribution of circle urban system spatial pattern. Spatial differences and dis- tribution of the network agglomeration is remarkable, the high clustering coefficient nodes presents the half-moon shaped distribution with weak agglomeration, the low clustering coefficient nodes＇ distribution is quite separate, The entire network presents the obvious community structure in the space and the community size varies significant- ly
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