Oxford;
Water,;
School;
of;
Geography;
and;
the;
Environment,;
Oxford;
University,;
Oxford;
OXI;
3QY,;
UK;
Beijing;
Office,;
Waijiaogongyu;
5-15-3;
Jianguomenwai;
Compound;
Beijing;
100600,;
China;
IHP,;
1,;
rue;
Miollis;
75732;
Paris;
Cedex;
15,;
France;
of;
Khartoum,;
Gramma;
Avenue,;
Khartoum;
11111,;
Sudan;
Institute;
for;
Water;
Security,;
University;
of;
Saskatchewan,;
National;
Hydrology;
Research;
Centre,;
11;
Innovation;
Boulevard;
Saskatoon;
SK;
S7N;
3H5,;
Canada;
Center;
for;
Integrated;
Water;
Resources;
Management;
(ICIWaRM-UNESCO),;
Institute;
for;
Water;
Resources;
(IWR),;
U.S.;
Army;
Corps;
of;
Engineers,;
7701;
Telegraph;
Road,;
Alexandria,;
VA;
22315-3868,;
USA;
联合国教科文组织; 水资源管理; 半干旱地区; 全球网络; 同位素示踪剂; 地下水模型; 阿拉伯地区; 加勒比地区;