Evaluation of Water Resources Utilization based on Virtual Water Theory in Xi'an

Water resources has become common concern,the fundamental reason is that it does not only affecting and restricting the sustainable development of modern society,but also becomes the most important issue of the world's resources and environment in this century,which is a direct threat to human survival and development. This paper calculated water footprint of Xi'an city in2011 and analyzed the relevant indexes of water resources in Xi'an through using virtual water theory. The result showed that the total water footprint of Xi'an in 2011 is 57. 66 × 108m3,water footprint per capita is 677.28 m3·a,water resource self- sufficiency rate is 0. 504,water resources pressure index is 174. 3%,The results showed a serious shortage of water resources in Xi'an,the high virtual water import dependence degree brings huge pressure to the development of Xi'an.