The thesis gives the cocept and basic structure of the value chain related to food security by means of value chain analysis,and discusses the method to analyse the value chain related to food security into three types,that is,to provide it by the public,by the mixture and by the market,then give the advice on how to carry it out.

In chapter three, introduce the concept of safety value chain, and analysis the chain\'s structure、content and function, indicate that safety value can be a basis for measuring coal mine\'s safety management and making safety decision.

Influence of short-term management on ecological environment and regional food security in the Heihe River Basin;

Use of water and land for food security and environmental sustainability;

Actuality and Technological Strategy of Food Security in China;

Analysis of retaining cultivated land and food safety in Guangxi;

Problems of agricultural disasters and food safety during the progress of urbanization in China;

To enhance the productive capacity of cultivated land and secure grain safety;

Dynamic research on regional grain safety;

Influences of Defarming-and-reafforestation Scale on Grain Security in Shizhong District of Guangyuan City;

Calculation of regional grain security and dynamic equilibrium of cultivated land quantity——A case study of Shaanxi Province;

Application of the virtual water trade to China s grain security;