The hierarchy rank of an urban system is a comprehensive reflection of the cities' position and role in the system.

城市体系的等级层次是不同等级的城市在体系内地位与作用的综合反映。

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Study of population size hierarchy is the groundwork of the city planning. It is important to the population forecast of cities and urban system planning.

城市规模分布研究是城市规划中的一项基础性研究工作，对准确预测城市人口规模以及合理确定城镇体系结构具有非常重要的意义。

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Basing on the model, a index system has been established, and selecting the Analytic Hierarchy Process (AHP) as the main method to evaluation the competitive power of urban tourism.

然后在此模型的基础上建立了一套评价的理论指标，并选取层次分析法作为评价城市旅游竞争力的主要方法。

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