Research On Sustainability Of Public- Private Partnership Projects In Characteristic Town Based On System Dynamics

In recent years,as the pace of urban transformation has accelerated,characteristic town has rapidly infiltrated the country as a new carrier for the development of new urbanization.Due to characteristic town's huge investment,the difficulty of industrial development and later operation management and other characteristics,the PPP model has been introduced into characteristic town projects.With the increasing rate of landing of characteristic town operating in the PPP mode,there may be a phenomenon that only pays attention to the early stage of the project decision-making and ignores the full-scale supervision and evaluation of the entire life cycle of the project in the process of project operation,which will lead to the long-term development of the project cannot be guaranteed.Therefore,conducting scientific,comprehensive,dynamic evaluation,forecasting and analysis and adopting corresponding adjustment measures are of great significance for ensuring the long-term development of the characteristic town PPP project.Based on this,this paper takes the sustainability of the characteristic town PPP project as the research object.Taking into account the characteristics of the systematic,complex and dynamic nature of the sustainability research of the characteristic town PPP project,this paper establishes the system dynamics model to conduct the research on the sustainability of the characteristic town PPP project.Based on the theory of sustainable development,this paper first puts forward the connotation of the sustainable development of the characteristic town PPP project,and clarify the main content of sustainability assessment.Comprehensively use the theoretical analysis and expert consultation method to select the key indicators for the sustainability evaluation of the characteristic town PPP project from the three aspects of economic benefits,social benefits,and ecological environment,and construct a sustainability evaluation index system for the characteristic town PPP project.At the same time,the key policy factors affecting the sustainable development of the characteristic town PPP projects are summarized based on the indicator system.Secondly,this paper analyzes the relationship among the key indicators,the factors influencing the key indicators,and the causal feedback relationship among the influencing factors of characteristic town PPP project based on the sustainability evaluation index system of characteristic town PPP project,then use Vensim Ple software to establish the system dynamics model for sustainability evaluation of the characteristic town PPP project,and set the variable equations in the model.Finally,the dynamic model of sustainability evaluation of characteristic town PPP project is used for empirical analysis,and the simulation results of the project sustainability in the cooperation period under the existing policy configuration scheme are obtained.Identify the main issues that affect the sustainable development of the project on the basis of the overall sustainable analysis of the system.Based on this,three different policy configuration schemes are proposed and simulated.And a relatively optimized policy configuration scheme is obtained by comparing with the simulation results and sustainable development capabilities of existing policy deployment scheme.The results show that the research method for sustainability of characteristic town PPP projects based on system dynamics proposed in this paper can better conduct macro-evaluation,predictive analysis and policy control for the characteristic town PPP project,it will help clarify the direction and achieve the sustainable development of the project.