Analysis on Spatial Structure of A-Grade Scenic Spots in China Based on Quantitative Geography Model
利用GIS和定量方法（如最近邻指数、基尼系数、热点聚类）分析了中国2424个A级景区的空间结构，发现景区呈集聚分布，人文景区集聚度高于自然景区，4A级以上景区服务范围东南优于西北。
The study of the spatial structure of tourism is receiving increasing attention but methodology so far has used qualitative rather than quantitative methods.Based on an investigation of 2 424 National A-grade tourist attractions and using GIS and some quantitative analysis methods,such as Nearest Neighbor Index(NNI),Gini Coefficient,quadrat analysis,hot spot clustering,and the spatial structure of scenic spots were investigated.Based on matrix raster data covering the whole space,this paper calculates spatial accessibility of all A-grade scenic spots in China using cost weighted distance method and ArcGIS as platforms.Service range of each scenic spot at 4A level and above in China was delimitated by using cost allocation method.The results show that the distribution of A-grade scenic spot in China is a type of agglomeration and spatial distribution equilibrium is low.Agglomeration of human scenic spots is higher than that of natural scenic spots,while the agglomeration of scenic spots at 4A level and above is less than that of scenic spots below 4A level.Service range of each scenic spot at 4A level and above in China was more advanced in south-eastern region than that in north-western region,whose spatial structure were closely related with traffic accessibility layout in China.First-order hotspots areas were mainly concentrated in the east side of the line formed by in Deqin-Alxa Left Banner.The second hotspots areas were composed of 11 region,while the third-order hot spots areas including Beijing,Tianjin,Central Plains and the Yangtze River Delta.This research can provide a new reference for tourist spatial structure study methodologically.