根据河道形态和沉积物特征的河流新分类-沉积学报.PDF

沉积学报990213 沉积学报 1999年 第17卷 第2期　No2 Vol 17 1999 根据河道形态和沉积物特征的河流新分类 王随继　　任明达 摘　要　目前河流分类方案较多，各有所长和不足 ，不同学科间的河型表述也有一定 的差异，不便于相互沟通。在讨论了分别以侵蚀阶段、沉 积物搬运方向、河道和河间 地的相对沉积速率以及河道平面形态等为标准的代表性河流分 类方案的不足之处后， 提出一个新的河型分类，把冲积河流分为辫状河、曲流河、分汊河、 网状河和直流河 五类，以便于沉积学界、地貌学界和水利学界等能够在统一的河型分类的格 架中相互 借鉴各自的研究成果。 关键词　河道形态　河流　河道间地沉积物特征　河流新分类 中图分类号　P512.2；P931.1　文献标识码　A A New Classification of Fluvial Rivers According to Channel Pla nform and Sediment Characteristics 1 2 WANG Sui-ji 　　REN Ming-da 1(Department of Hydraulic and Hydropower Engineering,Tsinghua Univ ersity,Beijing 　 100084) 2(Department of Geography,Reking University,Beijing 　 100871) Abstract 　　There are many fluvial clsaaifications in the world.S ome of them mainly are concerned with the relationship be tween river process and geotectonic evolution.Some of them are impressed the co mbination of predominant mode of sediment transport and channel stability .Some of them are classified only according to channel planforms.Some classifications are considered the relative rates of channel and interchannel accumulations, and so on.However,many of the classification schemes have more or less defects.Furth ermore,some classifications derived by the research workers of one subject can n ot applied in other subjects. 〔12〕 〔17〕 　　Two classification schemes of fluvial rivers derived by Rust and Qia n according to channel planform are applied widely in the world.The classification scheme 〔12〕 derived by Rust is given extensive attention b y many sedimentologists,while the 〔17〕 other derived b