6Malin Falkenmark, Carl Widstrand. Population and water resources: a delicate balance [ J ]. Population Bulletin, 1992, 19.
7Hughey K F D, Cullen R, Kerr G N, et al. Application of the pressure-state-response framework to perceptions reporting of the state of the New Zealand environment[ J]. Journal of Environmental Management, 2004, 70: 85-93.
8AL-KHARABSHEH Atef, TA'ANY Rakad. Influence of urban- ization on water quality deterioration during drought periods at South Jordan [J]. Journal of Arid Enviranments, 2003, 53 (4) : 619-630.
9FALKERMARK Malin, WIDSTRAND Carl. Population and water resources a delicate balance [ J ]. Population Bulletin, 1992,19.
10SAVENIJE H H G. Water scarcity indicators; the deception of the numbers [J]. Physics and Chemistry of the Earth, 2000, 25 (3) : 199-204.