该模型为空间经济学中若干经验观测现象提供了理论解释。通过将系统表征为由固定大小土地单元构成的复杂网络,各单元间通过港口活动间的贸易相互连接,从而导出城市规模与土地价值分布等高阶模式。模型预测了经验观测到的土地价值密度空间分布以及城市集群价格的空间分布。为将土地价值与人口(一种常见可观测量)关联起来,我们还证明:在城市集群层面,累积土地价值与人口之间存在线性关系。
The presented model provides an explanation to several empirically observed phenomena in spatial economics. By representing the system as a complex network of fixed-size land areas connected by trade between harbored activities, city size and land value distributions are obtained as higher-order patterns. The model predicts the empirically observed spatial distribution of land value density as well as that of urban cluster prices. To connect land value to population, which is a commonly observed quantity, we also demonstrate that there is, for urban clusters, a linear relation between accumulated land value and population.