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  • CN 62-1070/P
  • ISSN 1000-694X
  • Bimonthly 1981
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Evolution of Ulan Buh Desert Braided Channel of the Yellow River in Recent 50 Years

  • Li Yongshan ,
  • Peng Wenchang ,
  • Ren Liang ,
  • Li Yong
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  • 1. Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. The Yellow River Engineering and Management Bureau of the Inner Mongolia Autonomous Region, Bayinnaoer 015200, Inner Mongolia, China

Received date: 2015-03-06

  Revised date: 2015-10-16

  Online published: 2016-11-20

Abstract

The Ulan Buh Desert Reach of the Yellow River flows through the Ulan Buh Desert, developing typical desert channel. Besides discharges and suspended concentrations, and boundary condition, aeolian is also the vital driving factor for the developing of the desert channel. Based on the channel sections, discharges and suspended concentrations of the past almost 50 years, the research analyzes the trend of the Ulan Buh Desert Reach of the Yellow River in the past 50 years. The results show that from 1966 to 1993, with the high flow and low wash-load sediment concentration (HF-LC), the river lateral erosion and accumulation leading to the lateral channel shift, the infusion of aeolian sands into Yellow River lead to the development of braided channel. During the year of 1993-2013, with the low flow and high wash-load sediment concentration (LF-HC), through the filling of secondary anabranches and the shifting of the main active channel away from the aeolian-dune-covered banks, this caused a reduction in the addition of wind-blown into the channel and a reduction in the lateral channel shift rate, which led to the main active channel evolving into a meandering channel.

Cite this article

Li Yongshan , Peng Wenchang , Ren Liang , Li Yong . Evolution of Ulan Buh Desert Braided Channel of the Yellow River in Recent 50 Years[J]. Journal of Desert Research, 2016 , 36(6) : 1689 -1694 . DOI: 10.7522/j.issn.1000-694X.2016.00175

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