干旱区生态环境知识资源中心(Arid): 塔克拉玛干沙漠北缘荒漠过渡带风沙流结构特征分析

Arid

	塔克拉玛干沙漠北缘荒漠过渡带风沙流结构特征分析
其他题名	Study on Structure of Wind-blown Sand Flow over the Desert Ecotone in the Northern Marginal Zone of the Taklimakan Desert
	杨兴华 1; 何清 1; 阿吉古丽·沙依提 2; 程玉景 3
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2012
卷号	29 期号:4 页码:699-704
中文摘要	利用多种集沙仪,通过野外实时输沙观测,对塔克拉玛干沙漠北缘荒漠过渡带的地表风沙流特征进行了分析,结果表明:①100 cm高度范围内,总输沙量的47.3%分布在30 cm高度内,这一比例小于前人的研究结果;输沙量随高度的变化比较符合幂函数分布。②风沙流输沙的粒径以细砂、极细砂与粉砂为主,各高度层所占比例均达99%以上;风沙流输沙平均粒径随高度增加而减小,沙尘的含量随高度增加呈现"象鼻"状分布。③风沙流中贴地层风速廓线受风沙相互作用的影响,不再符合对数分布,更加符合幂函数u=az~b分布。
英文摘要	The damage of wind-blown sand flow is multiaspect,not only its destruction to soil surface texture and reduction of soil anti-erodibility,but also the affection on air quality and human activities.The Taklimakan Desert is the largest,warmest and driest desert in China,and it is also known as one of the largest mobile deserts in the world and one of the main source fields of sandstorm in China.So it is of signality to study the structure of wind-blown sand flow.In this paper,the structure of wind-blown sand flow over the Xiaotang area in a desert ecotone in the Taklimakan Desert was studied.The results showed that the proportion of transported sand quantity within a 30-cm height was higher than 47.3% of the total transported sand quantity near ground surface,and this result was different from that in previous studies.The transported sand quantity with height above ground surface changed in a power function way.The particle size distribution analysis of wind-blown sand sediment collected from different soil layers showed that the proportion of fine sand,very fine sand and silt was dominant(>99%).The average particle size was decreased with the increase of height.In wind-blown sand flow,wind profile near ground surface was not in a logarithmic distribution but in a power function distribution(u=az~b).
中文关键词	荒漠过渡带 ; 风沙流 ; 风沙流结构 ; 输沙量 ; 沙粒运动 ; 粒径 ; 塔克拉玛干沙漠
英文关键词	desert ecotone wind-blown sand flow structure of wind-blown sand flow sediment discharge sand particle motion particle size Taklimakan Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4585048
来源机构	中国气象局乌鲁木齐沙漠气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228053
作者单位	1.中国气象局乌鲁木齐沙漠气象研究所, 乌鲁木齐, 新疆 830002, 中国; 2.新疆维吾尔自治区气象局, 乌鲁木齐, 新疆 830002, 中国; 3.库尔勒市气象局, 库尔勒, 新疆 841000, 中国
推荐引用方式 GB/T 7714	杨兴华,何清,阿吉古丽·沙依提,等. 塔克拉玛干沙漠北缘荒漠过渡带风沙流结构特征分析[J]. 中国气象局乌鲁木齐沙漠气象研究所,2012,29(4):699-704.
APA	杨兴华,何清,阿吉古丽·沙依提,&程玉景.(2012).塔克拉玛干沙漠北缘荒漠过渡带风沙流结构特征分析.干旱区研究,29(4),699-704.
MLA	杨兴华,et al."塔克拉玛干沙漠北缘荒漠过渡带风沙流结构特征分析".干旱区研究 29.4(2012):699-704.