农畜产品虚拟水研究的背景、方法及意义

Research background, methodological issues and significance on virtual water of crop and livestock production

虚拟水是近年出现在水资源管理领域的新概念,随着全球贸易的增加,虚拟水已成为影响区域水资源管理的重要因素。分析了虚拟水概念出现的经济背景,总结介绍了与农作物和畜产品相关的虚拟水含量的计算方法,以及国际上虚拟水贸易的基本情况,揭示了虚拟水在提高水资源效率、制定水资源战略的作用,以及对社会经济、水资源管理等方面的重要影响。

With the increases of world trade a new concept, virtual water, recently arising and being frequently used in the field of water resource has became an important factor affecting region water system. The Economic background of the appearance of its appearance is analyzed, and methods to calculate the content of virtual water in crops and livestocks and the virtual water flow are introduced and reviewed. The virtual water flow concerning China's crop trade is also analyzed preliminary. And the importance of virtual water in raising the water use efficiency, making the comprehensive water resource planning, and possible effect on social and economic aspects are concluded preliminarily.