TY  - Data
T1  - Geographical study on river bed evolution process
A1  - Documentation Information Center
DO  - 10.12389/ariddc.02299
PY  - 2026
DA  - 2026-09-11
PB  - Arid Land Ecology and Resources Science Data Center
AB  - Among the many exogenic factors involved in shaping the Earth's continental surface, the activity of flowing water is of primary importance. Within the fluvial system, rivers occupy a special position. They are the principal arteries of water circulation acting continuously across vast continental areas, regularly transporting enormous quantities of solid material in the form of sediment and dissecting the land surface through networks of river valleys. By cutting down into the land surface, particularly under conditions of tectonic uplift, rivers increase topographic relief and slope gradients, thereby intensifying sheet erosion, promoting the development of primary linear erosional forms, and enhancing various slope processes ranging from the slow downslope movement of weathering products to rapid catastrophic events.The products of weathering and denudation originating on slopes enter rivers from throughout the drainage basin. Therefore, the existence of a river system is possible only when, at every point within it, the flowing water possesses “...such a velocity that it is capable not only of removing along the valley floor the material delivered into the channel by slope runoff, wind, and glaciers, as well as material entering from slopes by slumping, rockfall, and collapse, but also of deepening and clearing away the remains of dead aquatic vegetation accumulated on the valley floor. Otherwise, the river channel would gradually disappear ... as a result of being filled with mineral and plant material...” (Makkaveyev, 1955, p. 45).The transport of solid material within river flow is a complex and multifaceted process whose mechanisms manifest themselves differently in different parts of a river system and under varying combinations of natural conditions. While transporting sediment, which represents not only the products of terrestrial denudation but also material generated by the interaction of flowing water with the riverbed and banks through channel erosion
DB  - EGIDC
UR  - https://data.dcxjegi.cn/portal/metadata/ad2751cc-7d4b-4ce0-8cec-9df7d44b2436
ER  -