Research on the Urban Agglomeration Resilience Level Based on Super-Efficient SBM Model

With the acceleration of global urbanization, urban agglomerations have become cities’ most common spatial organization. The resilience of urban agglomerations is of great significance to the high-quality integrated development of urban agglomerations. How explore the resilience of urban agglomerations has become one of the essential issues in promoting the construction of high-quality urban agglomerations in China. This paper uses the three-dimensional spatial structure model and the barrel theory to establish the urban resilience level assessment model based on the Slack Based Measure model of non-expected output super-efficiency. It also constructs a three-dimensional evaluation index system of urban resilience with three primary and 24 secondary indicators based on the three characteristics of a resilience system: resistance, recovery and adaptation. Taking 16 prefecture-level cities in the Chengdu-Chongqing urban agglomeration and nine coastal prefecture-level cities in the Pearl River Delta urban agglomeration in China as research objects, the resilience degree of the two urban agglomerations are as follows: a whole and the cities within them are measured from 2017 to 2022. In the latest year, 2021, both cities lack resistance resilience. The overall resilience of both urban agglomerations is at a high resilience level. However, the resilience of the Chengdu-Chongqing urban agglomeration is higher than that of the Pearl River Delta urban agglomeration. The resilience value of the central cities of the urban agglomeration is not necessarily higher than that of the smaller cities within the urban agglomeration. The level of city resilience is not only related to their internal conditions but also to the surrounding cities. In the past five years, the overall resilience of both urban agglomerations has been increasing. However, there is a trend of two levels of differentiation, which should be noted when building cities.