将城乡道路网系统解构为需求、供给两个子系统,构建系列评价指标体系和引入耦合协调度模型,从地市、县市层面揭示了1995-2012年武汉城市圈城乡道路网供需系统的时空协同演化格局:地市层面上,武汉城市圈城乡道路网供给系统呈现出"核心-边缘"的空间生长趋势,需求系统呈武汉"一城独大"格局。城乡道路网供需系统耦合度由低水平向高水平发展,空间差异较小,协调度由失调向良好协调发展,呈现出同步进阶的态势;县市层面上,供给系统县际差异趋小,呈现等级圈层式的空间发育格局,需求系统也发展较均衡,呈板块集聚特征。城乡道路网供需系统耦合协调度整体水平不高,"核心-边缘"格局显著。

In recent years, the regional integration process has been accelerated, the construction of new countryside and villages and towns space renovation was intensified, the fast development of urban and rural road network is resulted in road network space constantly refactoring and transformation. With sharp dynamic transition and spiral succession, the urban and rural road network system in the composition, structure, function, system evolution and interaction mechanism is complicated. This article deconstructs the urban and rural road network system for two sub-systems (supply system and demand system), and builds the evaluation index systems for each one, to discuss the space-time development of the supply-demand system of urban-rural road network of Wuhan Metropolitan Area from different spatial scales for the purpose of providing theoretical guidance and decision-making basis for our country in urban-rural road network optimization. On the city level, the supply system presents a space growth trend of "core-periphery", the demand system shows a spatial pattern of Wuhan city dominated. On the county level, the spatial difference of supply system is small, and the supply system presents a layers' space development pattern.