干旱区生态环境知识资源中心(Arid): 乌兰布和沙漠流动沙丘风蚀空间分布规律及其影响因素

Arid

	乌兰布和沙漠流动沙丘风蚀空间分布规律及其影响因素
其他题名	The Spatial and Temporal Variability of Sand Erosion and Its Influences Factors across A Coastal Dune in Ulan Buh Desert,China
	李锦荣 1; 郭建英 1; 赵纳祺 2; 张志杰 3; 刘铁军 1; 吴强 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2018
卷号	38 期号:5 页码:928-935
中文摘要	为科学治理黄河乌兰布和沙漠沿岸风沙入黄问题,以该河段风沙危害严重的刘拐沙头流动沙丘为研究对象,开展沿岸沙丘风蚀与沉积规律及其影响因素研究。结果表明: (1)沙丘不同部位风蚀与沉积存在差异,与风速在沙丘的空间分布相关。迎风坡坡脚、坡中以风蚀为主,风蚀速率分别为1.07、1.31 cm·d~(-1);坡顶风蚀和沉积交替进行,风蚀速率2.16 cm·d~(-1),沉积速率1.36 cm·d~(-1);沙丘背风坡受反向气流影响以沉积为主,沉积速率2.19 cm·d~(-1),风蚀主要出现夏秋季节反向风时期;丘间地受上风向沙丘阻挡的影响,一般以沉积为主,平均沉积速率0.12 cm·d~(-1)。丘间地净风蚀量与背风坡显著差异(P<0.05),但与坡脚、坡中和坡顶差异不显著(P>0.1);背风坡净风蚀量与坡脚、坡中和坡顶极显著差异(P<0.01) 。从总风蚀速率来看,风沙活动活跃强度排序:坡顶>背风坡>坡中>坡脚>丘间地。(2)冬春季节风蚀与夏秋季节存在显著差异(P<0.05),风力和降水的季节性差异是造成风蚀季节性差异的主要因素。研究结果可为沿岸流动沙丘风沙入黄防治和完善黄河沿岸风沙防护体系提供参考。
英文摘要	This paper analyses the law of coastal dunes wind erosion /deposition and influencing factors along the Yellow River coast of Ulan Buh Desert. A field observation test about wind erosion and deposition was carried out in Liuguai moving dune of coastal regions of the Yellow River. Results show that: (1) Differences between wind erosion and deposition at different positions of the sand dunes are related to the spatial distribution of the wind speed. In the foot and middle of the windward slope,it’s given priority to wind erosion,and wind erosion rate is 1.07 cm·d~(-1) and 1.31 cm·d~(-1),respectively. In the crest,erosion and deposition occur alternately,and erosion rate is 2.16 cm·d~(-1),deposition rate is 1.36 cm·d~(-1). Leeward side of the dunes is given priority to deposition by eddy current effect,deposition rate is 2.19 cm·d~(-1),and wind erosion occurs only in summer and fall of reverse wind period. The dunes lowland is affected by the upward dunes on the block,and it is given priority to deposition, with deposition rate on average 0.12 cm·d~(-1). Net amounts of wind erosion in lowland and leeward side exist significant difference (P<0.05),but the difference is not significant between lowland and the foot of the windward slope,middle windward slope,crest (P>0.1). There is not extremely significant differences between leeward side and foot of the windward slope,middle windward slope,crest (P<0.01). The sand activity intensity is sorted as crest> leeward side>middle windward slope>the foot of windward slope>lowland. (2) There are significant differences in the wind erosion between summer to autumn and winter to spring (P<0.05),and the seasonal difference of wind speed and precipitation are the main factors of wind erosion seasonal differences.
中文关键词	沙丘 ; 风蚀速率 ; 风蚀测钎 ; 乌兰布和沙漠
英文关键词	sand dune wind erosion rate erosion pins Ulan Buh Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6343685
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238799
作者单位	1.水利部牧区水利科学研究所, 呼和浩特, 内蒙古 010020, 中国; 2.内蒙古农业大学沙漠治理学院, 呼和浩特, 内蒙古 010019, 中国; 3.呼和浩特市气象局, 呼和浩特, 内蒙古 010070, 中国
推荐引用方式 GB/T 7714	李锦荣,郭建英,赵纳祺,等. 乌兰布和沙漠流动沙丘风蚀空间分布规律及其影响因素[J]. 内蒙古农业大学,2018,38(5):928-935.
APA	李锦荣,郭建英,赵纳祺,张志杰,刘铁军,&吴强.(2018).乌兰布和沙漠流动沙丘风蚀空间分布规律及其影响因素.中国沙漠,38(5),928-935.
MLA	李锦荣,et al."乌兰布和沙漠流动沙丘风蚀空间分布规律及其影响因素".中国沙漠 38.5(2018):928-935.