Research On Optimization Of Fruit Logistics System In Wafangdian Based On GIS Technology

Modern logistics is the use of modern information technology means,using traditional materials circulation resources,organic integration of transportation,warehousing,loading and unloading,processing,finishing,distribution,information and other aspects,to achieve the entire process of rapid,accurate,and low-cost regional flow of materials.It can be seen that the logistics process is a spatial process and requires effective support from logistics nodes and network systems with reasonable levels,clear division of labor,and close connections in the geographical space.From the perspective of regional modern agricultural development,the advanced modern logistics support network system is the basic condition for ensuring the development of agriculture.Scientifically establishing and optimizing the logistics node and network system of agricultural products is of great significance for the promotion of regional agricultural development.Compared with daily household consumption logistics,agricultural product logistics has its uniqueness.From the observation of Wafangdian City in Dalian,the existence of high logistics nodes in the Wafangdian fruit logistics system cannot fully cover the low-level logistics nodes,and the supply of low-level logistics nodes to consumers is not timely,which greatly limits the local fruit trade.Market development.Therefore,the status quo of the Wafangdian fruit logistics system is evaluated,the key points of the current market conditions of the logistics system and Wafangdian are not identified,and scientific problems are used to optimize the existing problems of the logistics system.First of all,it analyzes the theoretical data about the composition of the logistics system,status analysis and layout optimization of logistics nodes,and divides the city fruit logistics system into fruit production downstream logistics and fruit sales upstream logistics,and the logistics of two routes.The nodes are evaluated and optimized for layout.The main functions and optimization principles of the logistics nodes at each level of the two lines are determined through accessibility theory,central location principles,and GIS technology.At the same time,basic data such as orchard area distribution data,existing logistics node data,and traffic network data are collected in the study area,and the collected data is processed.The database of upstream and downstream logistics lines is established separately,and the traffic network is constructed by combining the traffic network data with the actual situation.The model determines the preconditions for subsequent analysis evaluation and layout optimization.Then,the downstream logistics of fruit production is evaluated and optimized.Through the construction of the traffic network model of Wafangdian City,local traffic accessibility is evaluated,Voronoi diagram is used to divide the market area,and OD cost matrix is used for the fruit service center.Service accessibility evaluation.According to the evaluation results,using ArcGIS's location allocation model,the layout of logistics nodes is optimized from low to high,and the number and layout of logistics nodes are optimized.Finally,analyze the current status of fruit sales upstream logistics,and determine that the study area is Dalian City.Analyze the characteristics of different levels of logistics nodes,select suitable candidate locations,determine the optimization indicators in combination with the actual situation,and determine the number of logistics nodes according to the central location theory K=4.,The use of location allocation model to optimize the layout of logistics nodes.According to the study,it is concluded that there is a need to add 6 third-level,1 second-level,and 1 first-level fruit service centers to the existing fruit service centers in Wafangdian.Upstream logistics of fruit sales requires the addition of three tertiary logistics nodes and two secondary logistics nodes.In order to meet the needs of the market fruit market in Washi,the phenomenon of unequal distribution of fruit logistics resources will be alleviated,and the fruit logistics system of Wafangdian will be more perfect after optimization.This study proposes a feasible solution for the optimization of fruit logistics network in Wafangdian City and provides reference for improving the layout of logistics nodes.It is a powerful support for future logistics planning of Wafangdian City.Technical methods have enriched the method of GIS network analysis technology node system optimization.For Wafangdian fruit logistics system is divided into the production of downstream logistics and sales of upstream logistics two lines of research,this is a new research framework,can be extended to other similar regions or commodity logistics system optimization,enrich the logistics system optimization Methods to increase the objectivity of the study.