上游充通大￥ 6.1预测：水资源 SHANGHAI JIAO TONG UNIVERSITY Withdrawals,km3 8000 7000 Withdrawals,km3 ←6000 5000 50001 4000 4000 3000,- Conventlonal worlds Sustalnable worlds 2900 GE0-4 =..GE0-4 OECD OECD 3009 1000 -MA ===MA GE0-5 GE0-5 0 2000 2010 2000 2010 2020 2030 2040 2050 Note:The shaded area shows the range In the llterature. Source:Bakkes et al.2008;OECD 2008a;UNEP 2007;Alcamo et al.2005b;MA 2005a 世界取水量的不同情景预测6.1 预测：水资源 世界取水量的不同情景预测