A Study on the Measurement of the Niche of Regional Tourism Cities and Cooperation-Competition Model——A Case Study on the Pearl River Delta Region

Regional tourism system is a complex ecological system composed of natural environment and social environment. The measurement system of the niche of regional tourism cities consists of 4 dimensions of tourism resources, market, socioeconomy and environment as well as 32 variables. Based on the measurement of the niche of tourism cities in the Pearl River Delta Region and using clustering analysis, the paper divides cities within this regional tourism system into three types and points out the advantages, disadvantages and developing potentials of different types of cities.