Evaluation Of Diversified Financing Efficiency Of Sponge City Construction In Chongqing And Countermeasures

With the acceleration of urbanization in China,the impervious area in the city has increased,and rainwater cannot fully infiltrate naturally in the urban surface layer,thus forming surface runoff,resulting in a series of such as urban water-logging,urban runoff pollution,urban water shortage,urban Urban problems such as the deterioration of the ecological environment have seriously affected the lives of residents and the sustainable and healthy development of the urban ecosystem,and the construction of a sponge city cannot be delayed.Sponge city construction has a large area,large capital needs,and high operation and maintenance costs.Under the realistic environment of China’s economic downward pressure and insufficient endogenous growth momentum,the capital gap problem faced by the sponge city construction has become a "bottleneck" restricting the development of the sponge city factor.The problem of financing for sponge city construction has become the focus and difficulty of current research.Many scholars at home and abroad have begun to study and explore the problem of financing for sponge city construction,with a view to breaking through the "bottleneck" of sponge city construction and realizing stable and orderly sustainable development.But the current research is still mainly based on macroscopic qualitative description and theoretical research,and there are few quantitative studies based on real and objective cases.In this regard,from the perspective of the regional meso level,this paper focuses on the research on the evaluation of Chongqing sponge city diversified financing efficiency and countermeasures.The specific research is as follows:First of all,this article expounds the relevant theories of sponge city and financing efficiency,and sorts out and reviews domestic and foreign literature,laying a theoretical foundation for the entire study.Then,based on the literature research method,expert consultation method and questionnaire survey method,on the basis of identifying and screening the five major evaluation indicators of the sponge city financing efficiency and 19 influencing factors,combined with Chongqing’s market conditions,Chongqing’s sponge city diversity was constructed Evaluation index system of financing efficiency.The index system uses sponge city financing efficiency as the only indicator at the overall target level.Its system criteria layer covers the five major indicators of sponge city construction financing cost,financing risk,capital utilization rate,financing feasibility,and social function satisfaction.Nineteen specific evaluation index factors are constructed on the basic index level.Secondly,based on the evaluation index system of sponge city diversified financing efficiency,based on quantitative analysis and objective evaluation of research thinking,the use of cloud model theory(CM)to achieve the conversion between qualitative description and quantitative value,combined with gray correlation The method(GRA)realizes the objective weight assignment of the index factor,and then constructs the CM-GRA integrated model suitable for the evaluation of the diversified financing efficiency of the sponge city in Chongqing.Thirdly,this article selects Chongqing Yuelai New Town Sponge City Construction Project as an example to further analyze and discuss its multiple financing efficiency evaluation issues.Based on the questionnaire survey data,the data is processed through the CM-GRA integrated model to obtain the weight and evaluation cloud model of each level of indicators in the project financing efficiency indicator system.Taking each evaluation index as the starting point,by comparing and evaluating the three digital characteristics(Ex,En,He)and corresponding weights of each index cloud model,the important factors and weaknesses that affect the efficiency of Chongqing ’s sponge city diversified financing are determined Link.The results of the case analysis show that the Chongqing Yuelai New City project has average financing efficiency,and there is still much room for optimization in terms of financing cost,financing risk,capital utilization rate,and financing feasibility.