Evolutionary Spatial Structure Models of Regional Tourism System—A Case Study of Anhui Province
构建了区域旅游系统从稀疏点状到板块模式的五阶段演化模型，并用GIS模拟了安徽省1990-2020年旅游经济影响的扩散过程，发现皖北、皖中、皖南发展不平衡。
The article constructs the five phase modes of regional tourism system of sparse dot mode, scattered bock mode, stripe mode, rounded massive mode and plate mode on the base of predecessors' researches. The five modes evolve from the low stage to the advanced one. The sparse dot mode is the lowest mode and plate mode is the highest mode of regional tourism development mode. Then the author constructs models of field diffusion effects of tourism economic influence based on diffusion mechanism of regional economic influence and use modern GIS technologies to simulate dynamic evolution process of the modes spatial structure of regional tourism system. On this basis, the author takes the four annuals of 1990, 2000, 2010 and 2020 for an example to analyze of the evolution process of diffusion strength of tourism economic influence in Anhui Province. The results show that regional tourism develops unbalanced in three regions, Northern of Anhui, Middle of Anhui and Southern of Anhui. The mode of tourism system in Northern of Anhui drops behind Southern of Anhui and Middle of Anhui. The mode of tourism system in Southern of Anhui and Middle of Anhui will stride forward the age of plate mode through the construction and planning of tourism development axes and Northern Anhui will also stride forward the age of rounded massive mode in 2020.