A Study On SD Model And Simulation For Ecological Logistics System Of Online Express

Based on online express logistics activities as the starting point, this paper focuses on studying the ecology of express enterprises practice of ecological system, in turn, to express their own economic efficiency of enterprises.This study online express enterprises as the main body, combined with the related ecological system, will be considered as a whole.First of all, analyze the online Courier ecological logistics process, clarify logistics activities on the ecosystem disturbance.At the same time, the border of online express ecological logistics system, structure and levels, and each member of the whole system input and output.Then, by using system dynamics theory and method, with simple causality diagram in this paper, the whole system as well as the causal feedback mechanism between the various internal subsystems.Respectively construct logistics economy, logistics process, logistics technology, logistics services and logistics ecological contribution to five subsystems of causality diagram, at the same time with intuitive, concrete analysis of each variable, and number of causality is how to interact with each other, ultimately affect the entire express ecological logistics system.On the basis of the overall system dynamics model was constructed, and extract the single variable index model, at the same time, according to the input data and write equation system dynamics simulation analysis, explore the express enterprise environmental protection investment proportion of logistics waybill number of key index.At the theoretical level, the research of this paper is to apply mature theory system new areas, namely the system dynamics simulation method is adopted to online express ecological modeling analysis of logistics system, which not only extends the application range of system dynamics, also contributed to the perfect logistics related field theory and rich.In practical significance level, it is for Courier companies to provide the reference to help improve enterprise logistics performance as a whole.At present, the domestic express market is in a mess, in the field of business level of the red sea, competition in the final analysis or an economic strength.This article to express enterprise strategy provides a new Angle, through the establishment of system dynamics model, reveal the online express the inner motive power of ecological system, provide reference and basis for express enterprise’s strategic decision.