浅议虚拟水对我国水资源可持续发展的启示

Discussion on the Enlightment of Virtual Water in the Sustainable Development of Water Resource

水足迹和虚拟水是目前国际水资源领域研究的热点问题。"虚拟水"贸易能对改变我国水资源空间分布不均的格局发挥作用,而要发挥这种作用,还要靠农产品的"虚拟水"流动来实现。借助水足迹和虚拟水的概念,计算了2000和2002年我国及各区域主要农产品的虚拟水含量,通过分析区域的农产品生产和消费关系,分析了中国农产品"虚拟水"在全国5个区域上的变化趋势。结果显示,中国农产品的"虚拟水"数量在增长,各大区的农产品"虚拟水"总量及变化有差异。计算结果表明,中国是一个水资源高度自给的国家,但区域间差别较大。

Water footprint and virtual water are the hot topics in the field of international water resources research. ＂Virtual water＂, specially for the virtual water in farm productions,may have a great effect on the uneven distribution of water resources in China,In this paper the concept of virtual water and water footprint were used to calculate virtual water content in major agricultural products in 2000 and 2002,and the author made an analysis of the variation trend of virtual water in five regions in China, showing that the virtual water of farm productions was increasing.The result indicated China was a highly autarkic country in filling water resource,but every region had wore distinction.