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Self-organisation in territories leads to the emergence of patterns in urban systems that shape the interactions and dependencies between cities, resulting in a hierarchical organisation. Governance follows a hierarchical structure as well, breaking the territory into smaller units for its management. The possible mismatch between these two organisations may lead to a range of problems, ranging from inefficiencies to insufficient and uneven distribution of resources. This paper seeks to develop a methodology to explore and quantify the correspondence between the hierarchical organisation given by the structure of governance and that given by the structure of the urban systems being governed, where Chile is used as a case study. The urban hierarchical structure is defined according to the connectivity of the system given by the road network. This is extracted through a clustering algorithm defined as a percolation process on the Chilean street network, giving rise to urban clusters at different scales. These are then compared to the spatial scales of the politico-administrative system. This is achieved by using measures of pair-wise distance similarity on the dendrograms, such as the cophenetic distance, by looking at the different clustering membership using Jaccard similarity and by analysing the topological diversity defined as the structural entropy. The results show that the urban sub-national structures present high heterogeneity, while the administrative system is highly homogeneous, replicating the same structure of organisation across the national territory. Such contrasting organisational structures present administrative challenges that can give rise to poor decision-making processes and mismanagement, in addition to impairing the efficient functioning of the systems themselves. Our results can help address these challenges, informing how to rebalance such mismatches through planning and political strategies that consider the complex interdependencies of territories across scales.
Marín et al. (Wed,) studied this question.