Research On Logistics Network Optimization Of Green Agricultural Products Closed Suplly Chain

The domestic agriculture and agricultural logistics are gaining rapid development in recent years. Although the supply chain for agricultural products has been initially established, apparent problems still exist including the inadequate infrastructure for agricultural product logistics, the lack of specialized technical equipment, irrational investment structure for agricultural product logistics, high logistical costs, large loss of logistics, severe security situation for agricultural products, weak legal regulation support for agricultural logistics, incomplete logistics standards, irrational logistic network distribution, etc. Meanwhile together with the rapid development in both domestic economy and people' living standards, ever-growing attention is being paid to eco-system as well as to the quality and security of agricultural products. "Green, Secure and Healthy" is the common concern worldwide as well as the common good that all the customers expect. The pollution-free, secure, highly qualified and nutrient green agriculture products are of the customers'first choice. The traditional supply chain does not adequately satisfy all the needs mentioned above, therefore new models of supply chain is of great urgency to be exploited, among which the green agricultural product closed supply chain is an effective one.The efficient implementation of green agricultural product closed supply chain counts greatly on the proper support system for supply chain. The correctness of design of closed supply chain logistics network directly affects the efficiency and effectiveness. Although abundant research results have been gained for traditional agricultural product supply chain and its logistics network distribution, research for green agricultural product closed supply chain is still in its initial stage. Thus, the basic theory for green agricultural product closed supply chain and optimization for its logistics network are of high necessity to be explored in great depth.Based on the basic theory of green agricultural product closed supply chain, this thesis studied optimization models for green agricultural product closed supply chain logistics network with deterministic logistic conditions and optional logistic conditions respectively. Main works rendered by this thesis include as follows.(1) By summarizing the literature of variety, this thesis analyzed the current situation home and abroad of agricultural product supply chain and agricultural logistics network distribution, identified inadequacy of the current research and proposed research strategy.(2) By studying the current situation and existing problems of agricultural product supply chain and the main circulation patterns for agricultural products at home and abroad, this thesis proposed the green agricultural product closed supply chain which can effectively solve the problems encountered with the current supply chain.(3) The research on the basic theory of the green agricultural product closed supply chain. First, the analysis on the contents of the green agricultural product closed supply chain was conducted, which explored the basic circulation characteristics of the green agricultural product closed supply chain as well as its major difference with traditional agricultural product supply chain. Second, on the basis of the first step, the thesis constructed the basic architecture of the green agricultural product closed supply chain, accompanied by detailed introduction to the major functions of its major components. Finally, from different angles this thesis studied the green agricultural product closed supply chain by categories, resulting in the support system for the green agricultural product closed supply chain.(4) The construction of the supply chain logistics network optimization model under the deterministic logistic conditions. First, the analysis on the impact factors on the green agricultural product closed supply chain logistics network distribution was carried out. Second, from the perspective of the two major losses (quantity loss and quality loss), this thesis constructed the optimized green agricultural product closed supply chain logistics network model based on loss of the green agricultural products with the companion of algorithm study and case study. Finally, by putting into consideration the two aforementioned losses, the green agricultural product closed supply chain logistics network optimization model was built.(5) The construction of the green agricultural product closed supply chain logistics network optimization model under the optional logistic conditions. First, this thesis studied the green agricultural product logistic conditions, which are into two categories, namely the non-variable (such as package condition, storage condition, etc.) and the variable (such as transportation condition). Second, this thesis built the green agricultural product closed supply chain logistics network optimization model for optional room-temperature/cold-chain logistic condition (room-temperature and cold-chain conditions are the most basic non-variable ones), based on which this thesis built the green agricultural product closed supply chain logistics network optimization model for optional package/storage logistic condition. Finally, this thesis built the green agricultural product closed supply chain logistics network optimization model for optional transportation logistic condition.