Abstract
The policy term “Food Security” has been used since a worldwide food crises in early 1970s. In 1980s Japanese Government led the discussion on food security in the international organizations such as FAO. Food security became the main theme of the 1996 world food summit. The food security for Japan means maintain stable food supply both from domestic production and import under the declining trend of food self-sufficiency and deepening dependence on food import. Not only Japan but also European food importing countries are promoting domestic food production and preparing for controlling (rationing) national food demand in emergency case. Even food exporting countries such as the United States have legal system for a food shortage emergency. Securing food is the most important interest for people in developing countries especial in the least developed countries. Food security in the developing countries is closely linked with poverty eradication in recent years. Securing enough food supply against ever rising food demand in the world and overcoming food market price instability under the global warming trend, the 2011 G20 Cannes Summit decided to promote “the Group on Earth Observations led Initiative for GLOBAL AGRICULTURAL MONITORING (GEO-GLAM)”, which was an international network using remote sensing, to improve a prediction of agricultural production and a weather forecast. The whole world is eagerly waited for practical use of agricultural information system based on remote sensing.