干旱区生态环境知识资源中心(Arid): 策勒不同下垫面风速廓线时空差异研究

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	策勒不同下垫面风速廓线时空差异研究
其他题名	Temporal and spatial variability of wind velocity profiles on different underlying surfaces in Cele oasis-desert ecotone
	毛东雷; 雷加强; 曾凡江; 王翠; 周杰; 再努拉·热和木吐拉
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2014
卷号	28 期号:11 页码:171-177
中文摘要	通过对新疆策勒4个下垫面10m 高风速廓线及粗糙度、摩阻风速等分析,探讨不同时空条件下植被和地形对风场的影响。结果表明: 在中性层结下,从流沙前沿到半固定沙地、固定沙地扬沙天气风速廓线斜率依次降低,风速较大时基本符合对数关系,其拟合程度依次是半固定沙地﹥固定沙地﹥流沙地,绿洲内部2m以上高度的风速较大时与高度基本符合对数关系。春季沙尘暴期间风速较小时半固定沙地0-10m 高及绿洲内部2m 以上高度风速与高度变化接近对数关系,当夏季沙尘暴风速较大时,4个下垫面不同高度风速与高度之间都不呈现对数关系。随着地表植被覆盖度的增加,粗糙度和摩阻风速也迅速增加,绿洲内部夏季沙尘暴天气近地表粗糙度比春季地表粗糙度增加较为显著。
英文摘要	Through analysis of wind profiles and roughness and friction velocity at the height of 10 meters on four underlying surfaces in Cele County,the influences of vegetation and landform on wind field in different temporal and spatial conditions were probed. Outcomes indicate that wind profiles slopes decreased in turn from quicksand land to semi-fixed sandy land and fixed sandy land in the neutral stratification condition. Wind profiles mainly conformed to logarithmic distribution relationship when the wind velocity was greater. The fitting degree on semi-fixed sandy land was better than fixed sandy land and quicksand land in proper order. The wind profiles above 2 meters in oasis kept to logarithmic function relationship on the whole when the wind velocity was greater. Wind profiles at the height of 10 meters above semi-fixed sandy land and wind profiles above 2 meters height in oasis were close to logarithmic relationship when the wind speed was slower comparatively in dust storms in spring. They didn’t conform to logarithmic relationship between wind velocity and height in four underlying surfaces in strong sandstorm weather in summer. Roughness and friction wind velocity would be increased rapidly with increasing vegetation coverage on surfaces. Roughness height near surface in oasis in dust storm weather in summer was significantly more than that in dust storm weather in summer in oasis.
中文关键词	风速廓线 ; 粗糙度 ; 摩阻风速 ; 时空差异 ; 策勒
英文关键词	wind velocity profiles roughness friction wind velocity temporal and spatial variability Cele
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:5271104
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231256
作者单位	中国科学院新疆生态与地理研究所, 新疆策勒荒漠草地生态系统国家野外科学观测研究站, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	毛东雷,雷加强,曾凡江,等. 策勒不同下垫面风速廓线时空差异研究[J]. 中国科学院新疆生态与地理研究所,2014,28(11):171-177.
APA	毛东雷,雷加强,曾凡江,王翠,周杰,&再努拉·热和木吐拉.(2014).策勒不同下垫面风速廓线时空差异研究.干旱区资源与环境,28(11),171-177.
MLA	毛东雷,et al."策勒不同下垫面风速廓线时空差异研究".干旱区资源与环境 28.11(2014):171-177.