[1]杨婷婷,丁国栋,郝玉光,等.乌兰布和沙漠新月形沙丘迎风坡风速变化的初步研究[J].水土保持研究,2006,13(03):218-219,225.
　YANG Ting-ting,DING Guo-dong,HAO Yu-guang,et al.A Preliminary Study on Variation in Wind Velocity and Sediment Transport Rate on Windward Slope of Barchan Dune[J].Research of Soil and Water Conservation,2006,13(03):218-219,225.
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乌兰布和沙漠新月形沙丘迎风坡风速变化的初步研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 13 期数: 2006年03期 页码: 218-219,225 栏目: 出版日期: 1900-01-01
Title:
A Preliminary Study on Variation in Wind Velocity and Sediment Transport Rate on Windward Slope of Barchan Dune
作者:
杨婷婷1, 丁国栋1, 郝玉光2, 马士龙1, 尚润阳1
1. 北京林业大学水土保持学院, 北京 100083;
2. 中国林业科学研究院沙漠林业实验中心, 内蒙古磴口 015200
Author(s):
YANG Ting-ting1, DING Guo-dong1, HAO Yu-guang2, MA Shi-long1, SHANG Run-yang1
1. College of Water and Soil Conservation, Beijing Forestry University, Beijing 100083, China;
2. The Desert Forestry Experimental Center, Chinese Academy of Forestry, Dengkou, Inner Mongolia 015200, China
关键词:
乌兰布和沙漠; 新月形沙丘; 表面气流; 输沙率
Keywords:
Wulanbuhe Desert; barchan dune; surface air-flow; sediment transport rate
分类号:
S157;X171.1
摘要:
对乌兰布和沙漠新月形沙丘表面风速的野外观测结果表明，沙丘迎风坡气流加速量主要和沙丘坡面形态、迎风坡前来流风速有关，迎风坡风速放大率介于1.02~1.59之间。近地面风速和输沙强度由坡脚至丘顶总体呈递增趋势，丘顶风速和输沙率最大，到背风坡因涡流作用，风速由丘顶至坡脚减小，输沙率锐减，相对于丘顶的风速率变化在0.17~0.49之间。由于输沙率与起沙风速的立方成正比，因而风速在迎风坡上向丘顶增加时，丘顶区域的输沙率（相对于坡脚）将成倍增加。
Abstract:
Field measurement of surface wind velocity and sediment transport rates was made on barchan dune in Wulanbuhe desert to understand.The results show that the wind velocities increasing upon windward slopes of the dunes vary with both slope morphology and wind velocity at the foot of the dunes.The velocity amplification factors range from 1.02 to 1.59.Wind velocity and sediment transport increase from foot of slope to the top as a whole, and decrease on leeward slope.On the whole slope sediment transport and wind velocity is the greatest at the crest.With the increase of wind velocity, sediment transport increases in reduplication.

参考文献/References:

[1] 张春来, 郝青振, 邹学勇, 等.新月形沙丘迎风坡形态及沉积物对表面气流的影响[J].中国沙漠, 1999, (4):359-363.
[2] Jackson P S, Hunt J C R.Turbulent winds flow over a low hill[J].Q.J.R.Metro.Soc., 1975, 101:939-955.
[3] 哈斯, 董光荣, 王贵勇.腾格里沙漠东南缘沙丘表面气流与坡面形态的关系[J].中国沙漠, 1999, 19:1-5.
[4] 哈斯, 王贵勇, 董光荣.腾格里沙漠东南缘沙丘迎风坡风速变化的初步研究[J].干旱区地理, 1999, (1):41-46.

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备注/Memo

收稿日期:2005-6-24
基金项目:国家自然科学基金资助项目“基于空气动力学流动阻力及绕流理论的植被防风蚀机理研究”（项目编号：30471422）
作者简介:杨婷婷（1981- ），女，内蒙古临河人，硕士生，主要从事荒漠化研究工作。

更新日期/Last Update: 1900-01-01