干旱区生态环境知识资源中心(Arid): 策勒绿洲-沙漠过渡带风沙活动强度的空间分布特征

Arid

	策勒绿洲-沙漠过渡带风沙活动强度的空间分布特征
其他题名	Spatial Distribution Characteristics of Sand Blown Activities Intensity on Cele Oasis-Desert Ecotone
	毛东雷 1; 雷加强1 ; 曾凡江1 ; 李生宇2 ; 再努拉·热和木吐拉 1; 王翠 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2013
卷号	27 期号:2 页码:13-19
中文摘要	通过对策勒绿洲-沙漠过渡带及绿洲内部4个不同下垫面2010年11月-2011年10月1年内2m及10m高度的风况及输沙势对比分析,结合过渡带地表实际风沙蚀积变化情况得出结论:沿主风向从流沙前沿到半固定沙地、固定沙地、绿洲内部2m高合成输沙势依次为26.21,1.91,3.44,0.007 4VU,10m高合成输沙势分别为54.37,31.53,28.65,2.40VU,从流沙前沿经半固定沙地、固定沙地到绿洲内部随着地表植被覆盖度的增加及绿洲内部防护林网的防护作用增强,各下垫面风力、输沙势及合成输沙势逐渐减弱,流沙地地表表现为强烈的风蚀,并伴随流动沙丘前移,半固定沙地由于高密度的高大柽柳沙堆影响整体呈现大量的风沙堆积,绿洲边缘固定平沙地由于天然植被覆盖度较好,地表整体呈现轻微的蚀积变化,而在绿洲内部由于多条防护林网防护作用及地表较好的土壤水分条件,绿洲内部很少发生地表风蚀。2m高的输沙势自流沙前沿至绿洲内部较10m高的输沙势降低明显,说明了过渡带近地表的天然植被及绿洲防护林网对近地表风力削弱程度远远大于10m高的地表旷野空间,其具有良好的防风阻沙作用,更能代表近地表的风沙活动强度变化。
英文摘要	Through the research of contrast of wind regime and drift potential and resultant drift potential at the height of 2 meters and 10 meters of four different underlying surface between November 2010and October 2011on oasis-desert ecotone in Cele,combining with change situation of factual sand erosion and deposition on ecotone,it reveals that the RDP from mobile sandy land to oasis along prevailing wind direction were 26.21,1.91,3.44,0.007 4VU at the height of 2meters and 54.27,31.53,28.65,2.40VU at the height of 10 meters respectively.With the increase of vegetation coverage and protection strengthen of shelter forests in oasis from mobile sandy land to farmland,the wind power and DP and RDP decreased sharply especially in oasis.Mobile sandy land showed strong sand erosion accompanying with mobile dunes movement on the bare surface,semi-fixed sand land appeared a large of sand deposition because of lofty Tamarix ramosissima nebkhas chain upwind prevailing wind direction,it occurred slight sand deposition and sand erosion in one year as a whole on the verge of oasis of fixed sandy land because of high natural vegetation coverage.While,there nearly occurred sand erosion by influence of protection roles of shelter forests net in oasis and well soil moisture content on the surface.The DP of 2-meter-high decreased more obviously than that of 10-meter-high from mobile sandy land to oasis.It reveals that weakness degree on wind power by natural vegetation and shelterbelts near land surfaces were more than that on the height of 10 m open field.It shows that natural vegetation and shelterbelts can reduce wind power and make sand deposited around shrubs,which can represent intensity change of sand blown activities near surface.
中文关键词	绿洲-沙漠过渡带 ; 输沙势 ; 风沙活动强度 ; 空间分布特征
英文关键词	oasis-desert ecotone sand drift potential intensity of sand blown activities spatial distribution characteristics
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4841211
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/2XILL650/230169
作者单位	1.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; 2.中国科学院新疆生态与地理研究所, 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. 策勒绿洲-沙漠过渡带风沙活动强度的空间分布特征[J]. 中国科学院新疆生态与地理研究所,2013,27(2):13-19.
APA	毛东雷,雷加强,曾凡江,李生宇,再努拉·热和木吐拉,&王翠.(2013).策勒绿洲-沙漠过渡带风沙活动强度的空间分布特征.水土保持学报,27(2),13-19.
MLA	毛东雷,et al."策勒绿洲-沙漠过渡带风沙活动强度的空间分布特征".水土保持学报 27.2(2013):13-19.