Hoekstra A Y, Hung P Q. Virtual water trade: A quantification of virtual water flows between nations in relation to international crop trade[A]. Value of Water Research Report Series No.11[M]. Delft:IHE Publication, 2002:33～60
[2]
Allan J A. \'Virtual Water\': A long term solution for water short Middle Eastern economies[A].Paper presented at the 1997 British Association Festival of Science, Roger Stevens Lecture Theatre[M].University of Leeds, Water and Development Session, 1997:14～45
Allen R G, Pereira L S, Raes D,et al. Crop evapotranspiration: guidlines for computing crop water requirements[A].FAO Irrigation and Drainage Paper 56[C].Rome,1998:8
[6]
Wackernagel M, Rees W. Our ecological footprint: Reducing human impact on the earth[M]. Gabriola Island, B C, Canada: New Society Publishers, 1996:55～70
Chapagain A K, Hoekstra A Y. Virtual water trade: a quatification of virtual water between nations in relation to international trade of livestock and livestock products[M]. Delft: IHE Publication, 2003:49～76
[11]
王学全.青海共和盆地水资源承载能力研究[D]. 北京:中国林业科学研究院,2004:23～40
[12]
卢琦.中国沙情[M]. 北京:开明出版社,2000:25～32
[13]
庄琴学.浅析青海省粮食安全问题[J]. 攀登, 2003,22(4):70～72
[14]
Hoekstra A Y. Virtual water trade: an introduction[A]. In: Hoekstra A Y, Virtual Water trade. Value of Water Research Report Series (No.12)[M]. Delft:IHE Publication, 2003
