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水足迹是指在一定的物质生活水平下,维持一定人群消费所需要的总的水资源数量[3]。文中以陕西省为例,运用产品虚拟水研究方法测算并分析了陕西省1998-2007年的水足迹及其动态变化,结果表明:自1998年来陕西省水足迹总量稳定在239-267亿m3,人均水足迹保持在660-730m3,两者总体呈上升趋势,10年间陕西省水资源集约利用度提升迅速,水资源压力指数由于受到降雨量等因素的影响,波动较大,总体有所升高。将陕西省水足迹与同期全国其他城市以及国外一些国家进行了对比,并提出了降低水足迹以缓解陕西地区水资源压力的几条途径。
The water footprint refers to the total amount of water needed to maintain a certain population consumption at a certain material living level [3]. Taking Shaanxi Province as an example, the product virtual water research method was used to calculate and analyze the water footprint and its dynamic changes in Shaanxi Province from 1998 to 2007. The results show that the total water footprint of Shaanxi Province has been stable at 239-267 million m3 , The per capita water footprint remained at 660-730m3, both of which showed an overall upward trend. During the 10 years, the intensive utilization of water resources in Shaanxi Province increased rapidly. Due to rainfall and other factors, the water resource pressure index fluctuated greatly and overall increased high. The water footprint in Shaanxi Province was compared with other cities in the same period in the whole country and some countries in foreign countries. Several ways of reducing water footprint to alleviate the pressure of water resources in Shaanxi Province were put forward.