Improving Climate Resilience Responding to Urban Floods Under Climate Change

As the frequency and intensity of heavy rains due to climate change increase, the risk of the urban ecosystem due to flood is increasing. To adequately respond to urban floods, the ability of cities to withstand and rapidly recover from the natural hazards of changing environmental conditions is essential. Considering the multiple functions and services that the urban ecosystem provides, securing the resilience of urban to climate change is very important. Through this concept, we tried to develop a methodology to improve and evaluate the climate resilience of urban green and blue infrastructure for the realization of a sustainable city to adapting to extreme climates. Climate resilience can be defined as the ability to recover system functions by overcoming instability caused by internal and external shocks in accordance with extreme climate change phenomena. In response to the challenges, this study intends to establish a methodology for improving the climate resilience of green and blue infrastructure (soil, forest, etc.) against flooding based on the urban ecosystem. In this study, System Dynamics model (SD) and Geographic Information System (GIS) were used to analyze flood risk and its impacts based on the four resilience components (4Rs) that consider the social-ecological system. The 4Rs are used as indicators of the city's recovery impact, and the climate resilience is evaluated by applying it to the system dynamics model. Through the results of this study, it is possible to propose a policy management plan to strengthen urban resilience and a method to cope with various environmental changes.

This work was supported by Korea Environment Industry &Technology Institute (KEITI) through "Climate Change R&D Project for New Climate Regime.", funded by Korea Ministry of Environment (MOE) (2022003570003) and Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(NRF-2021R1A6A1A10045235)