A virtual water analysis for agricultural production and food security
虚拟水在解决农业生产和粮食安全问题中的作用研究

Water resource demand is increasing with the population growth and economic development. Water resource problem for agriculture and food security have become one of the global focal points because of water resource scarcity. The concept of virtual water is useful to analyze and impair this problem.In this paper,virtual water implication was described, and international study progress about it was briefly reviewed. Furthermore, China's agricultural water scarcity and food security were analyzed. According to the grain import prediction and agricultural production conditions of China,the virtual water equivalents of China in 2010 and 2020 were evaluated, which were 88×109m3 in 2010 and 95×109m3 in 2020. With the function of virtual water to agricultural water stress, virtual water strategy was suggested to relieve agricultural production pressure from water resource and meet growing food demand as well as to promole water resource sustainability in China.