目前对长江经济带域内交通网络的连通性状态尚无准确监测和评价，该文以2015年第一次全国地理国情普查成果、2016年基础性地理国情监测成果以及相关行业专题资料为数据源，设计长江经济带交通网络通达性监测方法，并以此分析2015—2016年长江经济带的交通网络通达性变化状况，为长江经济带域内交通网络规划提供科学数据支撑.研究结果表明，长江经济带靠近核心区域的交通通达性较好，而趋于边缘区域的则较差，且核心交通网络通达性已由原来的中心城市逐渐向较边缘城市扩散.较边缘的城市借助自身的优势已发展至通达性较好的水平，每一个通达性较好的区域都可以作为一个中心点逐步变成核心区域.
There is no accurate monitoring and evaluation for current accessibility states of the transportation infrastructure in the Yangtze River economic zone. By referring the results of the frst national geographic census in 2015, the monitoring results of basic national geographical state in 2016, and the related socio-economic data, this paper proposes a method for monitoring the accessibility of trafc network in the Yangtze River economic zone. The changes of transportation network accessibility within the Yangtze River economic zone from 2015 to 2016 are analyzed with this method. The study results indicate that the accessibility level of the core transportation network in the Yangtze River economic zone is consistent with the economic level of the cities of the zone. Moreover, the accessibility of the core transportation network has gradually spread from the original capital cities to peripheral cities, accordingly, peripheral cities can develop to a better level of accessibility through their own advantages. Each peripheral area with good accessibility can serve as a central point and gradually become a core area.
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