The Effect of Wind-blown Sand on Sediment Deposition in the Channel for Inner Mongolia Reach of Yellow River

On the basis of sample boring in the sediment deposition of channel within the Inner Mongolia Reach and by tracing sources of sediment deposition, it indicates that the sediment deposition of channel in the Inner Mongolia reach of Yellow River originates mainly from Wulanbuhe desert, ten tributaries (valleys) of Kubuqi desert and rolling/gulley terrains in comparison with or analysis of sand stratum sampling along the Yellow River and its tributaries, and storm flood. The sediment deposition amount of the channel within this reach can be calculated and obtained from sediment discharge balanced method. The total sediment deposition amount in this reach was about 0.2011 million t in 1954 ~ 2000 years, of which (0.1557) million t for coarse sediment greater than 0.1mm, taking 77.42% of the total; 0.0454 milliont t for sediment smaller than 0.1mm, making up 22.57%.The wind-blown sediment amount into Yellow River is as follows: 0.0606 million t for Wulanbuhe desert and 0.0585 million t for Kubuqi desert, of which both deserts account for 76.46% coarse sediment greater than 0.1mm.