On the Sustainable Utilization of the World's Cultivated Land Resources in View of Food Security

Based on the latest statistics, after giving a clear definition to food security, the paper argues that food security is threatened by the problems of poverty, rapid population growth, diet change and the increasing food demand which is caused by the bio-energy development. Meanwhile, the decrease of the average available arable land worldwide, the pessimistic growth potential of it. the reduction of it for food production, and its degradation, which all challenge the food security as well. In order to cope with this problem, the article focuses on promoting the ways of thinking of the sustainable use of cultivated land resources by the ways of maintaining the land ecological balance, optimizing land use structure, controlling the blind expansion of construction land and population growth, and by ways of changing the consumption patterns etc..