City Cluster Logistics Symbiotic System's Evolution And Symbiosis Effect Study

Under the impetus of information and economic globalization,city cluster has become the main trend of the world's urbanization.Whether city cluster logistics system can operate efficiently has become an important factor which restricts the coordinated development of city cluster and economic integration,and it has become an important indicator to measure the degree of economic development of city cluster.Because the city cluster has agglomeration and diffusion effect,economies of scale effect and urban labor division difference effect,the city cluster logistics system more emphasizes the symbiosis and synergy effect among the agents.In view of the above research background,the research of evolution causes,evolution mechanism,evolution path and symbiotic evolution effect of city cluster logistics system is of great significance for the promotion of city cluster logistics industry structure adjustment,pushing integration of city cluster logistics,realizing the sustainable development of city cluster logistics industry and economy.This paper takes the symbiosis theory as the research angle,and constructs the city cluster logistics symbiotic system based on the complex adaptive system theory.This paper has systematically and deeply studied the symbiotic evolution of city cluster logistics symbiotic system combining self-organization theory and other theories and methods,and achieved some innovative results and conclusions.The research work of this paper is mainly reflected in the following aspects:(1)This paper has proposed the concept of city cluster logistics symbiotic system,and constructed the city cluster logistics symbiotic system's symbiosis structure model,and more analyzed the main components of the system,answered the question of what is the city cluster logistics symbiotic system.(2)Based on the symbiosis theory,the symbiotic evolution contents and symbiotic conditions of city cluster logistics symbiotic system are analyzed.At the same time,with the use of self organization theory,the paper has constructed the system's symbiotic evolution motivation conceptual model,and in-depth analyzed the self organization motivation and organization motivation about system's symbiotic evolution,and their corresponding compositions,answered the question of why the city cluster logistics symbiotic system evolves symbiotically.(3)This paper has constructed evolvement influence factors EIA concept model of city cluster logistics symbiotic system,and specifically analyzed the micro symbiotic unit ability factors,meso symbiotic interface factors and macro symbiotic environment factors.This paper has analyzed competitive synergy mechanism,positive and negative feedback mechanism of the symbiotic evolution of the system by using the self-organization theory.Based on the dissipative structure theory and logistic growth curve theory,the evolution path of the system is analyzed.The evolution process of the system can be divided into coupling,growing,stabilizing,mutating four stages,and combining chaos theory,Matlab simulation has been carried out on the evolution of the system.Using the Lotka-Volterra model,this paper has established symbiosis models of city cluster logistics symbiotic system's symbiotic units in the evolution process,which mainly contains partial-interest symbiosis model,reciprocal symbiosis model and competitive symbiosis model.This study part has answered the question of how city cluster logistics symbiotic system symbiotic evolves.(4)Defining the symbiotic efficiency's concept and connotation of city cluster logistics symbiotic system,after explicating symbiotic efficiency evaluation contents,this paper has chose improved DEA method to evaluate the symbiotic efficiency inside each subsystem,the symbiotic efficiency between subsystems and the whole system symbiotic efficiency through the comparison of several evaluation methods.While the definition of city cluster logistics symbiotic system's symbiotic energy connotation,this paper has evaluated the system's symbiotic energy generation level using the Malmquist total factor productivity index model,and constructed the influencing factors Tobit regression analysis model,in order to clear the key factors which influence the system's symbiotic energy generation level.The analysis results can provide reference for the relevant countermeasures and suggestions.This part of study has answered the question of how about the city cluster logistics symbiotic system's symbiotic evolution effect.(5)Owing to the Yangtze River economic belt and the Yangtze River middle reaches city cluster national strategy backgrounds,this paper has chose the Yangtze River middle reaches city cluster as the empirical research object,and evaluated the Yangtze River middle reaches city cluster logistics symbiotic system's symbiotic efficiency and symbiotic energy generation level using the previously constructed relevant models.According to the evaluation results,the corresponding countermeasures and suggestions have been put forward,which includes the enhancement of city cluster logistics symbiotic system's symbiotic units subject abilities,the ascending of city cluster logistics symbiotic system's symbiotic interface,the optimization of city cluster logistics symbiotic system's symbiotic environment and the specific measures.