塔里木河流域2003年虚拟水计算初探

Primary Evaluation of Virtual Water in the Tarim River Basin in 2003

简要介绍了虚拟水含量的计算方法。根据2003年塔里木河流域的资料,计算了主要农产品单位质量的虚拟水含量、城乡居民消费的虚拟水含量和生产产品的虚拟水含量。(1)与西北其它地区相比较,塔里木河流域生产单位质量的农产品虚拟水含量相对较低。(2)从塔里木河流域虚拟水消费总量看,城镇居民与农村居民的消费相差不大,分别为3.71×109m3和3.30×109m3。而其中一些消费产品,如粮食、猪肉、家禽、鲜蛋、糕点和鱼虾等的消费在城镇居民与农村居民间仍然存在着一定的差异。(3)全社会消费的虚拟水数量和实际生产产品中的虚拟水含量分别为7.01×109m3和2.20×1010m3。可以看出在塔里木河流域实际生产产品的虚拟水含量远远大于各项消费的总虚拟水含量。

Based on the data of the Tarim River in 2003, the method of assessing virtual water was briefly introduced. Virtual water for the main primary farm products and total virtual water consumed by citizens were calculated. The results showed that virtual water for the main primary farm products in the region was lower as compared with other regions in Northwest China. In terms of total virtual water expenditure, there was no significant difference between urban and rural residents. However, for the consumptions such as food supply, pork, poultry, egg, cake, fish, there was a significant difference between urban and rural residents. The total amount of consumed virtual water was estimated to be 3.71×10^9m^3, and the total amount of the virtual water for production,2.20×10^10m^3. This indicates that the total amount of virtual water for production is much more than that for consumption.