流空间的特征分析及其流空间结构的有效揭示与解析,对于厘清和掌握流空间的科学内涵与外延及其内在机制的形成具有极其重要的学术价值。文章基于在线预订数据提取、处理、归纳及分析,结合社会网络分析技术,对长江三角洲地区旅游流的网络结构特征及其影响因素进行分析。结果表明：①旅游流网络结构整体上较为松散且存在不均衡性,具有明显的核心区和边缘区,“核心—边缘”结构特质清晰,“中间重、两头轻”的网络格局已初步形成,核心区的内部联系较之边缘区,密切联系程度显著。②从凝聚子群的分析来看,上海、南京、杭州、苏州、宁波、无锡、常州等城市出现较高的频次,成为支撑整个旅游网络体系重要的派系节点,对于旅游网络体系的形成发挥重要价值。从结构洞指标分析来看,上海、南京、杭州在旅游流网络中占据较多优势,节点的有效规模和效率较高,拥有更多的竞争机会和非替代性区位优势。③针对流空间网络体系的影响因素深度剖析表明,旅游资源禀赋和交通发展水平对于空间流的走向作用更为明显,地区经济发展水平、旅游服务接待水平的作用依然较大,不同因素之间的共同作用和影响促进了流空间在长三角地区网络结构的形成和发展。
Revealing and parsing effectively on the characters and the structure of flow space is of great academic value on clarifying and grasping it's scientific connotation and extension as well as inner mechanism. On the basis of extracting, processing, concluding and analyzing of online reserve data, with Social Network Analysis, this paper studied on the network structure features and influence factors of the Yangtze River Delta Region City's tourism flows. The results showed that:(1) the network structure of city's tourism flow was generally loose and disproportional, it had distinct core areas and marginal areas ,and the feature of ‘core-peripheral' structure was clear, the network format had developed initially into a situation of ‘the middle weighs both ends', besides, the inner relationships in core areas were more frequent than marginal areas.(2)In terms of cohesive subgroups analysis, cities like Shanghai, Nanjing, Suzhou, Ningbo, Wuxi and Changzhou had a high frequency and become important faction nodes of the whole tourism network system, which had great value to the formation of tourism network system. In terms of structure holes index analysis, Shanghai, Nanjing, Hangzhou had more advantages in tourism flows network, the effective scale and efficiency of city nodes were higher, as a result, they had much more competitive opportunities and non-fungible regional advantages.(3)With the depth study of the influence of flow space network system, it manifested that tourism resource endowment and traffic development played an evident role on the direction of space flow, the development of local economy and tourism service quality still had an important effect, besides, the combined effect and influence among different factors drove the formation and development of flow space in the Yangtze River Delta network structure.
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