Copyright: International Research and Training Center on Erosion and Sedimentation (IRTCES) Address: IRTCES, P.O. Box 366, No.20 Chegongzhuang Road West, Beijing, 100044, China Tel: (8610) 68786413, 68413372; Fax: (8610) 68411174; E-mail:liuxy@iwhr.com; irtces@public.bta.net.cn |