干旱区生态环境知识资源中心(Arid): 沙漠地区不同下垫面近地表沙尘水平通量研究

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	沙漠地区不同下垫面近地表沙尘水平通量研究
其他题名	Near-surface Horizontal Sand-dust Flux over Different Underlying Surfaces in a Desert
	杨兴华; 何清; 霍文; 艾力·买买提依明; 刘新春
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2014
卷号	31 期号:3 页码:564-569
中文摘要	沙漠地区近地表水平输送的沙尘物质通量及其随高度的变化特征直接影响着沙尘的输送过程。选择塔克拉玛干沙漠腹地塔中地区的典型沙丘、平沙地为观测点,利用BSNE 集沙仪,对20082009年11次典型沙尘天气过程中近地表0 ~ 200 cm 不同高度层沙尘物质的水平输送进行了测量,对其随高度变化特征进行分析,计算近地表水平运动的总沙尘通量。结果表明: 近地表0 ~ 200 cm 范围内,在沙丘顶部和平沙地沙尘水平通量均随高度呈显著降低趋势,在这2种下垫面条件下,沙尘水平通量随高度的变化均较好地符合幂函数关系; 在沙丘顶部,通过100 cm(宽度) * 200 cm(高度)空间断面的总沙尘水平通量为3 721. 0 kg,平沙地通过相同大小断面的沙尘水平通量为2252. 9 kg,比沙丘顶部减少了39. 5%; 沙丘顶部与平沙地PM_(80)的总水平通量分别为996. 8 kg 和678. 9 kg。
英文摘要	Aeolian sand-dust transport is a serious problem in many arid regions in the world,and it is considered to be the significant part of global biogeochemical cycles. Deserts are the main sources of aeolian sand-dust transport in the near-surface air layer,and aeolian sand-dust transport process is closely related to the variation of horizontal sand-dust flux near ground surface with the height. In this study,the samples were collected with BSNE samplers,the data of horizontal sand-dust flux over sand dune top and level sandland in hinterland of the Taklimakan Desert were analyzed,and the variation of horizontal sand-dust flux within 200 cm above the ground surface with the height was researched. The results indicated that,in the near-surface air layer in a range of 0-200 cm, the intensity of horizontal flux of aeolian sand-dust decreased significantly with the increase of the height over sand dune top and level sandland. Over the two different underlying surfaces,the change of horizontal sand-dust flux with the height obeyed the power function well. The total flux of aeolian sand-dust passing through a section of 100 cm * 200 cm was 3 721. 0 kg over sand dune top,but 2252. 9 kg over level sandland and reduced by 39. 5% compared with that over sand dune top. The horizontal fluxes of aeolian sand-dust of PM_(80) over sand dune top and level sandland were 996. 8 kg and 678. 9 kg respectively.
中文关键词	地表 ; 沙尘输送 ; 水平通量 ; 塔克拉玛干沙漠
英文关键词	surface air layer sand-dust transport horizontal flux Taklimakan Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5141977
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/2XILL650/231170
作者单位	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
推荐引用方式 GB/T 7714	杨兴华,何清,霍文,等. 沙漠地区不同下垫面近地表沙尘水平通量研究[J]. 中国气象局乌鲁木齐沙漠气象研究所,2014,31(3):564-569.
APA	杨兴华,何清,霍文,艾力·买买提依明,&刘新春.(2014).沙漠地区不同下垫面近地表沙尘水平通量研究.干旱区研究,31(3),564-569.
MLA	杨兴华,et al."沙漠地区不同下垫面近地表沙尘水平通量研究".干旱区研究 31.3(2014):564-569.