Key;
Laboratory;
of;
Water;
Cycle;
and;
Related;
Land;
Surface;
Processes,;
Institute;
of;
Geographic;
Sciences;
and;
Natural;
Resources;
Research,;
CAS,;
Beijing;
100101,;
China;
Bureau;
of;
Comprehensive;
Development,;
Ministry;
of;
Water;
Resources,;
Beijing;
100053,;
China;
Graduate;
University;
of;
Chinese;
Academy;
of;
Sciences,;
Bei.jing;
100039,;
China;
Chiba;
University,;
Chiba;
263-8522,;
Japan;