法国物流工程论文-关于物流减量化问题研究France logistics engineering thesis-Logistics is called as the facilitator of economics. But our economics depends too much on logistics, the logistics demand coefficient, namely the total logistics amount compares to GDP, has increased in high speed, and the proportion of logistics cost to GDP is high without decrease to double mount of developed countries. The logistics cost consist of economic and ecosystem is very high. And, the same problems exist in agriculture development, especially the ecosystem cost. Logistics plays a very important role in the value-increasing of agri-products. But the problems of agricultural logistics system have brought on huge loss, due to be incapable of realizing the value, which affects the income of the farmers, and lead to the overusing of fertilizers and pesticide. It is both significant in theoretic and realism to research on the problems of too high logistics cost of national economic development, because it is the important goal to decreas the logistics cost of economical development.According as the material flow theory framework, the paper studies on the problems of the economical logistics cost, comprehensively utilizing the economics, management, system science, industry cluster theory, and so on, as well as the methods such as logic syllogism and induce, criterion analysis and demonstration analysis, qualitative analysis and quantitative analysis, theory analysis and contrast analysis, system analysis, SCP analysis, mathematics model, games theory, case study, etc. The main content include: first, set forth and discuss the material flow theory, take it as the basic theoretical foundation to analyze the logistics cost of China, and then put forward the concept of logistical reduction in combination of the actual high logistical cost; second, analyze the main facts to affecting the logistics cost in China, and study on the problems of logistical reduction of amount of practicality and value; third, in the views of industrial organization, analyze the reduction of economical logistics system while utilizing the SCP framework; fourth, study on the main obstruction to the logistical reduction and the government behavior; five, analyze the agri-products logistical reduction combined with actuality of agriculture of China; lastly, is the case study of vegetable as the dominant agri-products in Shandong Province. The main viewpoints and conclusions are as follows:1. The material flow theory helps to solve the problem of high logistics cost, namely to realize the aim of logistical reduction. The material flow (MF) means the flow of material, and the economical logistics is a sect of it. The core thought of the MF is, MF consists of natural material flow, social material flow and economical material flow, the whole and the harmony are emphasized in the activities of MF, both inside and among each kind of the material flow. The base of economical material flow, the bridge between production and consumption, is natural material flow (NMF), and the final destination of the economical material flow (EMF) is harmony of social material flow. At the same time, the relationship between EMF and produce is bi-directional, the EMF serves the produce and marketing while the produce and marketing should take aim the goal of MF, which is the thought of MF. The development of EMF has been accelerated by the economical development, and gradually formed the logistics industry cluster after socialization and specialization which is the organization being capable of exerting the whole advantage. Because of the huge space-time range, the logistics industrial cluster not only is on the geography distance but also is manifested virtual in virtue of modern technologies. The causes of the forming of logistics industry cluster are the saving of contract cost and the utilization of scope economics.2. As regards of the high logistics cost of China, beside the cost per capita, the flux is also too h