Acta Geographica Sinica ›› 2015, Vol. 70 ›› Issue (1): 73-84.doi: 10.11821/dlxb201501006

• Orginal Article • Previous Articles     Next Articles

Cracking the root of the Two Theory Systems on eolian sand movement mechanism from an innovative perspective

Xianke SUN1(), Xueli ZHANG2   

  1. 1. The Forestry Department of Liaoning Province, Shenyang 110031, China
    2. Liaoning Institute of Sand Fixation and Afforestation, Fuxin 123000, Liaoning, China
  • Received:2014-04-10 Revised:2014-11-24 Online:2015-01-20 Published:2015-01-20


This article breaks down the eolian sand movement into two parts from a geographic perspective for the first time, the inner core and the outer extension. The fluid start and the impact start of saltation are the two entities that constitute the inner core, and all transportation performance after the sand particle start can be defined as the outer extension. Drawing upon this innovative idea, this article carries out discussion on the root of how divergences arise between the two systems of theories, the eolian sand physics and the eolian sand geography. The results reveal that whether one is able to distinguish the different properties of the two entities of the inner core and whether one is able to understand the interaction mechanism correctly of the two entities lead to the formation of the cores of the two theoretical systems and are the root of many divergences. This article deepens the understanding towards the connotation of eolian sand movement and theoretically breaks through the long term leading core idea in the sand movement scholastic circle presented by Bagnold whose theory on the two types of sand particle start appreciates one and depreciates the other.

Key words: eolian sand movement theoretical system, eolian sand physics, eolian sand geography, the inner core of eolian sand movement