干旱区生态环境知识资源中心(Arid): 新疆策勒4个典型下垫面近地层风速脉动特征

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	新疆策勒4个典型下垫面近地层风速脉动特征
其他题名	Wind Speed Fluctuation near Ground Surface over Four Typical Underlying Surfaces in Qira,Xinjiang
	毛东雷 1; 蔡富艳 2; 杨余辉 3; 雷加强4 ; 薛杰 4; 来风兵 3
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2017
卷号	34 期号:1 页码:126-135
中文摘要	以塔克拉玛干沙漠南缘策勒沙漠-绿洲过渡带为研究区,对流沙地、半固定沙地、固定沙地和绿洲内部4个下垫面平均风速、风速脉动和风向脉动特征进行分析,探讨风速、风向脉动差异原因。结果表明: ①平均风速与阵风风速之间符合线性相关性,相关性随着距离地表高度的增大而增大,各高度平均风速与阵风风速都呈极显著正相关(P < 0.01); ②从流沙前缘沿主风向至绿洲内部,随着植被盖度的增加,平均风速逐渐降低,且离地表越近降低的幅度越大; ③随距离地表高度的增大,各测点风速脉动强度呈现先增大后减小的趋势,风速脉动相对值呈减小的趋势。从流沙地、半固定沙地、固定沙地到绿洲内部,风速脉动强度和风速脉动相对值总体上呈现增大的趋势,而在4个下垫面中,绿洲内部不同高度的风速脉动强度在夏季表现为最小,在冬季表现为最大; ④风向脉动幅度以流沙地最小,半固定沙地、固定沙地次之,绿洲内部最大,即随植被覆盖度增加而增大。
英文摘要	The desert-oasis ecotone in Qira in the southern margin of the Taklimakan Desert was taken as the study area to analyze and research the characteristics of average wind speed,wind speed fluctuation and wind direction fluctuation over four typical underlying surfaces including shifting sand land, semi-fixed sand land, fixed sand land and oasis,and the causes resulting in the differences of wind speed fluctuation and wind direction fluctuation were discussed. The results are as follows: ① The average wind speed and gust speed were consistent with the linear correlation,and the correlation was increased with the increase of height from ground surface. There was a significant positive correlation between average wind speed and gust speed at different heights (P < 0.01); ② The average wind speed along the prevailing wind direction was gradually decreased with the increase of vegetation coverage from shifting sand land to inner oasis,and the wind speed would be decreased more when it was near the ground surface; ③ With the increase of height from ground surface at different observation sites, the fluctuation intensity of wind speed was increased at first and then decreased,and the relative fluctuation intensity of wind speed was in a decrease trend. Both the fluctuation intensity and relative fluctuation intensity of wind speed were holistically in an increase trend from shifting sand land to semi-fixed sand land, fixed sand land and inner oasis. However, the wind speed fluctuation intensity at different heights over the four typical underlying surfaces was the lowest in summer but the highest in winter; ④ The fluctuation density of wind direction was the lowest over shifting sand land,and then over semi-fixed sand land and fixed sand land,and it was the highest over inner oasis. That is to say, the fluctuation density of wind direction was increased with the increase of vegetation coverage.
中文关键词	沙漠-绿洲过渡带 ; 近地层 ; 平均风速 ; 风速脉动 ; 风向脉动 ; 策勒 ; 新疆
英文关键词	desert-oasis ecotone near ground surface average wind speed wind speed fluctuation wind direction fluctuation Qira Xinjiang
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:5897500
来源机构	中国科学院新疆生态与地理研究所 ; 新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235968
作者单位	1.新疆师范大学地理科学与旅游学院, 新疆干旱区湖泊环境与资源重点实验室;;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 830054, 中国; 2.乌鲁木齐职业大学应用工程学院, 乌鲁木齐, 新疆 830002, 中国; 3.新疆师范大学地理科学与旅游学院, 新疆干旱区湖泊环境与资源重点实验室, 乌鲁木齐, 新疆 830054, 中国; 4.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,蔡富艳,杨余辉,等. 新疆策勒4个典型下垫面近地层风速脉动特征[J]. 中国科学院新疆生态与地理研究所, 新疆师范大学,2017,34(1):126-135.
APA	毛东雷,蔡富艳,杨余辉,雷加强,薛杰,&来风兵.(2017).新疆策勒4个典型下垫面近地层风速脉动特征.干旱区研究,34(1),126-135.
MLA	毛东雷,et al."新疆策勒4个典型下垫面近地层风速脉动特征".干旱区研究 34.1(2017):126-135.