The Research On The Construction Of Cold Chain Logistics Network Based On GIS

With the rapid development ofeconomy,the continuous improvement of living standards of urban and rural residents,and the changes of the lifestyle,accelerating the development of cold chain logistics has become increasingly urgent.Currently, there are many problems of cold chain logistics,such as,the low rate of products cold chain,the backward equipment of cold chain logistics, the poor convergence of logistics,the lack of professional third party cold chain logistics companies etc.These status have greatly increased the total cost of the product throughout the cold chain logistics in ciraulation.Besides, the quality of cold chain products can not be guaranteed,seriously affecting the food security of urban and rural residents. Construction of low cost,high effciency,informationization of cold chain logistics network,not only can guarantee food safety,reduce logistics costs,and also has an important significance for easing the contradiction between supply and demand of agricultural products,and meeting consumer demand.In this paper,firstly,the background and significance of the study were introduced and the current situation of home and abroad of cold chain logistics network construction and GIS applications were analyzed based on summarizing the variety literature.Then on the basis of relecant theories of coldchain logistics network,taking GIS as the platform,using the improved P-median,established the location model and route optimization model based on GIS in the process of building a cold-chain logistics network.Finally,taking Changsha as an example,based on the analysis of the development status of cold chain logistics,taking the existing large farmers markets as candidate points and large supermarkets as demand points,build the location model and carries on the solution,obtained the optimal results and then draw the corresponding route. Proved the feasibility and effectiveness of the algorithms,and lay the foundations for the further research on the application of GIS in the cold chain logistics network optimization.In this paper,the theory and technology of GIS is applied to the research on the establishment of cold chain logistics network, can effectively reduce logistics costs, improve service quality, have certain positive effect on promoting the development of China’s cold chain logistics.