Research on Urban Resilience Evaluation of Ulaanbaatar City

As a complex social ecosystem, cities continue to suffer from various impacts and disturbances from the outside and themselves. In this context, the research on resilient cities becomes more and more necessary. This study takes Ulaanbaatar City as the research object, uses the TOPSIS-entropy weight method to measure and analyze the resilience level of Ulaanbaatar City from 2017 to 2021, and puts forward strategies to improve urban resilience according to the measurement results. The results show that: (1) the index ranges of economic resilience, social resilience, ecological resilience, infrastructure resilience and urban resilience of Ulaanbaatar are 0.097-0.901, 0.237-0.893, 0.465-0.622, 0.368-0.631 and 0.036-0.789, respectively. (2) The economic resilience index increased most significantly among the four resilience dimensions, with an increase of 828.86%. The social resilience index showed a trend of first increase and then decrease, but the overall increase was 0.387. The ecological resilience showed a wave-like downward trend, while the infrastructure resilience index showed a steady upward trend compared with the development fluctuations of other dimensions. (3) Under the joint action of the four dimensions, the urban resilience index showed a trend of first increasing and then decrease, with an increase of 0.644 compared with 2017. This study is of practical significance for clarifying the current situation of urban resilience development in Ulaanbaatar and improving the level of urban resilience in Ulaanbaatar.