20122603 Chen Yixin ( College of Urban and Environmental Sciences,Peking University,Beijing 100871,China );Zhang Mei Fluvial Incision Process and Its Tectonic Implications of Golmud River since Last Glaciation Maximum ( Acta Geographica Sinica,ISSN0375-5444,CN11-1856 / P,66 ( 11 ), 2011,p.1540-1550,5illus.,5tables,40refs. ) Key words:river terraces,erosion surfaces,incised valleys,Qinghai Province