中文摘要：

对历届广交会的统计数据以及第109届广交会共2万多家国内参展企业的数据资料进行整理和分析,运用数理统计、地理集中指数（Index of Concentration）、吸引半径指数（Attractiveness Radius）、相关性分析等量化方法,从空间分析角度研究广交会吸引国内各地区、各行业企业参展的吸引力空间分布结构以及分布差异。结果表明：广交会对国内参展商的吸引力在空间上已经形成了广泛的覆盖;相同等级分布区（带）的省份（直辖市、自治区）表现出明显的空间连续性,不同等级的分布区（带）则呈现较显著的从东（南）向西（北）递减的分布形态;同时,参展商数量与距离存在显著负相关关系,参展商的空间分布符合距离衰减平方指数模型,具有较明显的距离衰减趋势;参展行业在各省及全国的空间集中度较低,但在部分地区的分布呈现一定的集聚现象。

英文摘要：

The Canton Fair （China＇s Import and Export Commodities Fair） is one of the most influential international trade fairs in China,each session of the Fair has attracted tens of thousands companies of various industries as exhibitors from all over the country.Spatial study on attractiveness of the Canton Fair is of great significance for its organization,management and marketing.In this paper the data of more than 20,000 exhibitors to the 109th Canton Fair are analyzed,and the mathematical statistics,geographical concentration index and attractiveness radius,correlation analysis and other quantitative methods are used to research the distribution of attractiveness of the Fair and the differences in spatial structure.The results show that the attractiveness of the Canton Fair has already formed an extensive coverage.The provinces at the same level of distribution areas are near or adjacent to each other,while those at different levels of distribution areas show significant attenuation trend from southeast to northwest in space.There is a significant negative correlation between the quantity of exhibitors and distance.And the spatial distribution of the exhibitors is in accord with the distance attenuation square index model,and presents an obvious trend of distance attenuation.The geographical concentration indexes of the industries of exhibitors in the provinces and in the whole country are all at relatively low level,but there are still certain spatial agglomerations of industries in some areas.