水土保持研究2013，Vol.20Issue(4)：95-98,4.
乌兰布和沙漠不同下垫面风沙流结构与变异特征
Wind-Sand Flow Structure and Its Variation under Different Surface Conditions in the Ulanbuh Desert
摘要
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.关键词
乌兰布和沙漠/风沙流结构特征/输沙量/粒度组成Key words
Ulanbuh desert/ wind-sand flow structure/ windblown sand flux/ particle size distribution分类
天文与地球科学引用本文复制引用
徐军,郝玉光,刘芳,陈海玲,辛智鸣,孙非..乌兰布和沙漠不同下垫面风沙流结构与变异特征[J].水土保持研究,2013,20(4):95-98,4.基金项目
"十二五"科技支撑项目(2012BAD16B0103) （2012BAD16B0103）
