陕南A级旅游景区空间格局演变特征及内在机理研究

采用2002—2013年陕南A 级旅游景区统计资料，运用最邻近指数和地理集中指数等定量分析方法，借助地图、GIS空间分析工具和实地调研等手段，对陕南A级旅游景区空间分布类型与结构模式的演变及其内在机理作了深入分析。研究发现:① 陕南A 级旅游景区空间分布由高度集中逐步向均匀分布演变；② 分布结构模式经历了一极集中型、两极集中型、两强一弱三极集中型、一带集中型和接近均匀的随机分布型的发展变化；③ 陕南A 级旅游景区空间扩散表现出由西向东、以区域中心城市为核心沿交通线向外扩散、由高度集聚向均匀分布和由平原向深山的特点，其原因主要与区域旅游开发的前期基础、交通网结构的变化、客源市场位置以及政府对建设A级景区的鼓励政策有关。

Evolution and Inherent Mechanism of Spatial Structure on A-grade Tourist Attractions in Southern Shaanxi

With the statistical data of A-grade tourist attractions from 2002 to 2013 in southern Shaanxi, the nearest-neighbor index and the geographic concentration index analysis methods, map, GIS spatial analysis and field research method were used to analyze the evolution of A-grade tourist attractions spatial distribution types, structure pattern, and inherent mechanism. The results found that: ① highly centralized spatial distribution of A-grade tourist attractions in southern Shaanxi evolved gradually towards the uniform distribution；② distribution model had experienced five forms, which are single-pole gathering type, two-poles gathering type, three-poles gathering type of two strong one weak, single-belt gathering type, and nearly uniform random distribution type; ③ the A-grade tourist attractions spatial diffusion exhibited from west to east, from the regional central city as the core along the traffic line outward diffusion, from high concentration to the uniform and from the plain to the mountains, and the patterns were caused by the regional tourism development foundation, traffic network structure changes, market position and the government for the construction of the encouraging policy for A-grade tourist attractions.