Study On The Spatial-Temporal Evolution,Influencing Factors And Enhancement Strategies Of Smart City

As economic activity and population proliferate,cities are exposed to an increasing number of unknown risks and uncertainties,which aggravate their vulnerability.How to ensure that cities have the ability to function normally even in the face of natural and man-made disturbances is an important issue for China’s new urbanization construction and the 14 th Five-Year Plan.Traditional urban management tools are unable to cope with complex urban problems,and the promotion of smart cities has strengthened the ability of modern urban governance and alleviated urban diseases to a certain extent,but whether they have the ability to cope with disturbances remains to be seen.Strengthening the integration of smart cities and urban resilience to comprehensively enhance the ability of cities to withstand risks is one of the important means to achieve sustainable urban development.Focusing on the resilience of smart cities,this paper measures the resilience of smart cities and analyzes their spatial and temporal evolution characteristics by constructing a smart city resilience evaluation index system containing four subsystems:infrastructure,ecological,economic and social resilience,based on a panel of 85 smart cities in China from 2013 to 2020,based on a review of theories related to smart city resilience.On this basis,the influencing factors outside the evaluation index system are selected to construct a spatial econometric model in five aspects: urbanization level,fiscal level,openness,market power and infrastructure,and further develop an empirical study.The results of the study are as follows.(1)Although most smart cities still belong to low resilience in 2018-2020,the resilience has improved significantly compared to 2013-2015,and the coefficient of variation has decreased during the study period,and the difference in resilience among cities has gradually decreased.The resilience of each subsystem shows an obvious hierarchy,specifically social resilience > economic resilience > infrastructure resilience > ecological resilience,and the gap between the resilience of each subsystem is gradually narrowing,except for social resilience where there is still a more obvious gap.(2)The resilience of smart cities shows an obvious unbalanced distribution of "less high point-more low surface" and "strong in the east and weak in the west".The cities with high resilience are concentrated in the urban agglomeration of the Yangtze River Delta and the eastern coastal urban belt,and most of the cities with low resilience are distributed in the western and northeast regions.The spatial pattern of the resilience of each subsystem d has no drastic change,with an unbalanced distribution of "strong in the east and weak in the west".(3)Although the global Moran’ I index fluctuated during the study period,there is still a more obvious spatial spillover effect on the resilience of smart cities in China,with a more fragmented distribution of high-high aggregation and a predominantly high-low aggregation in the northeast and a predominantly low-high aggregation in the central region.(4)There are differences in spatial effects among the factors that affect the resilience of smart cities.The direct effects of urbanization level,fiscal level,market power and infrastructure on smart city resilience are significantly positive;the indirect effects of infrastructure on smart city resilience are significantly positive;and the total effects of fiscal level,market power and infrastructure on smart city resilience are significantly positive.According to the above conclusions,this paper proposes the path of smart city resilience improvement from five aspects: influencing factors,infrastructure resilience,ecological resilience,economic resilience and social resilience,in order to promote the construction of smart city resilience and achieve sustainable urban development.