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[1]XU Jun,HAO Yu-guang,LIU Fang,et al.Wind-Sand Flow Structure and Its Variation under Different Surface Conditions in the Ulanbuh Desert[J].Research of Soil and Water Conservation,2013,20(04):95-98.

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Wind-Sand Flow Structure and Its Variation under Different Surface Conditions in the Ulanbuh Desert

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 04 Page number: 95-98 Column: Public date: 2013-08-28

Title:: Wind-Sand Flow Structure and Its Variation under Different Surface Conditions in the Ulanbuh Desert

Author(s):: XU Jun, HAO Yu-guang, LIU Fang, CHEN Hai-ling, XIN Zhi-ming, SUN Fei; Desert Forest Experimental Centre, Chinese Academy of Forestry, Dengkou, Inner Mongolia 015200, China

Keywords:: Ulanbuh desert; wind-sand flow structure; windblown sand flux; particle size distribution

CLC:: P931.3

DOI:: -

Abstract:: Wind-Sand flow structure and its variation of 0—40 cm in the mobile sand dune, semifixed dune and fixed dune of Ulanbuh desert are investigated. The results show as the followings: (1) 0—40 cm vertical height， total windblown sand flux increases with the increase of wind speed; total windblown sand flux of mobile sand dune is greater than total windblown sand flux of semifixed dune and fixed dune at different wind speed, presents decreasing function of exponential relation; (2) under the same wind velocity, 0—40 cm vertical height， relative windblown sand fluxes of three types of surfaces present decreasing function of power relation with the increase of the height; (3) with the increase of the height, medium sand particles basically present decreasing trend, while fine sand particles increase, and the increase ranges are different under different surface conditions; (4) three types of different surface conditions near surface 0—10 cm layer of wind-sand flow structure features of S values are less than 3.8, and λ value is greater than 1, indicating that three types of different surface conditions are in a state of wind erosion or transfer.

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