Research on the Dynamic Evolution of Sponge City Construction Risk Based on System Dynamics

Abstract Following the research idea of "theoretical analysis -- mechanism analysis -- model simulation", the basic concept and basic theory of sponge city construction risk are firstly defined, and then the risk factors and internal mechanism of sponge city construction are analyzed by the grounded theory method. Finally, the system dynamics model is used for simulation. The dynamic development and key risk factors of each sub-risk system in the whole life cycle are analyzed, and the countermeasures to reduce the risk of sponge city construction are given.