2Turral H, Burke J, Faures J. FAO water reports No 36: Climate Change, Water and Food Security[R]. Rome: FAO, 2001:174.
3World Water Assessment Programme. The United Nations World Water Development Report 2: Water a Shared Responsibility[R]. Paris: UNESCO, 2006.
4Bertilsson E Stockholm Water Front: World Water Week Daily [EB/OL]. Stockholm International Water Institute. [2012-08-28]. http://www.worldwaterweek.org/documents/WWW_PDF/Med ia/2012/2012-WWD-tuesday.pdf.
5Bigas H, Morris T, Sandford B, et al. The global water crisis: addressing an urgent security issue. Papers for the InterAction Council, 2011-2012[R]. Hamilton, Canada: The United Na- tions University - Institute for Water, Environment and Health. 2012:2-7.
6Hails C. Living planet report 2008[R]. Gland, Switzerland: World Wide Fund For Nature, 2008:46.
7World Water Assessment Programme. The United Nations World Water Development Report 4: Managing Water under Uncertainty and Risk[R]. Paris: UNESCO, 2012:866.
8Lutz W, Sanderson W, Scherbov S. The coming acceleration of global population ageing[J]. Nature, 2008, 451(7179): 716-719.
9Turral H, Burke J, Faures J. FAO Water Reports No 36: Climate Change, Water and Food Security[R]. Rome: FAO, 2001:174.
10Shiklomanov I A. Appraisal and assessment of world water resources[J]. Water International, 2000, 25(1): 11-32.