中文摘要：

选取湖南省20个国家级贫困县为研究对象,采用县市的旅游收入与旅游人次作为旅游经济联系的主要指标,通过修正的引力模型,同时运用社会网络分析法测度空间上的网络联系和网络结构,借助度分析、核心边缘分析、密度分析等指标研究20个贫困县在旅游开发、旅游经济发展过程中的空间联系和经济结构的演变,初步得出2011年~2015年湖南省20个贫困县的旅游经济联系呈现出逐年加强的趋势,网络密度值逐渐变大,核心县市中处于网络结构外围的贫困县出现更迭现象,节点分析发现县域旅游经济发展的网络结构不存在一般旅游城市和目的地所具有的稳定性,针对以上的结果分析,对所有县进行划分,初步确定三种发展模式包括：核心辐射发展,片区互动发展,边缘聚拢发展三种发展联动模式。

英文摘要：

With 20 state-level poverty-stricken counties in Hunan province as the research objects, this paper applies the tourism income and the number of tourists as the main indicators of tourism economic ties. Through the modified gravity model, it uses social network analysis method to measure space of network connection and the network structure at the same time. With the methods of degree of edge, core analysis, density analysis as indicators, the author analyzes the special links and the evolution of the economic structure in the process of economic development of the 20 counties. It can be concluded preliminarily that from 2011 to 2015, the tourism economic ties of 20 counties of Hunan Province presents a strengthening trend year by year and the network density value increases gradually. The core counties and cities in the network can be observed with changes in the periphery. The node analysis found that the network structure of county tourism economic development is not as stable and steady as that in cities. According to the above results and the division of all the counties, three development modes can be summarized as the preliminary conclusion： the development of core radiation, interactive development and the development of the edge gathering together.