ABSTRACT
As an important topic in research field of sponge city and low-impact development, the layout optimization and adaptive design of rain and flood toughness of various urban open spaces can provide a reference for the construction of urban ecological civilization, which is of significant value in promoting the effective exertion of hydrological and ecological functions of urban public spaces. Taking Dalian urban open space as an example, the spatial pattern index of the research object was calculated and analyzed by comprehensively using ArcGIS analysis and landscape ecological index evaluation. And the impact and role of spatial layout mode on rain and flood toughness of open space were further discussed. The research and discussion results put forward corresponding optimization suggestions for the construction and optimization design strategy of open space layout mode in the study area.
