干旱区生态环境知识资源中心(Arid): 乌兰布和沙漠风沙入黄影响因子变化特征

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	乌兰布和沙漠风沙入黄影响因子变化特征
其他题名	Variation of Impact Factors on the Aeolian Sand blown into the Yellow River in the Ulanbuh Desert Area
	田世民 1; 姚文艺 1; 郭建英 2; 马涛 1; 李锦荣 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2016
卷号	36 期号:6 页码:1701-1707
中文摘要	乌兰布和沙漠是黄河上游内蒙古河段风沙的主要来源区,风沙入黄影响因子的变化会直接改变入黄风沙量,并进而对黄河水沙输移以及河床演变产生一定影响。依据野外调查和遥感影像,对河道边界条件、土地利用状况、沙漠所在区域风力条件和沙尘暴特征等风沙入黄影响因子进行了研究,揭示了其变化特征和趋势。结果表明:乌兰布和沙漠沿黄边界已发生很大变化,沿黄区域已修建一定规模的大堤,重新界定了河道范围,流动沙丘临河段长度较20世纪80年代大大减少,半固定沙丘多分布在距河道较远的地方,中间已被农田、村庄和开发地阻隔;沙漠所在区域年均风速及年最大风速总体上呈下降趋势,其中年均风速自20世纪50年代至今降低了1~1.3m·s~(-1),年最大风速较20世纪90年代初期降低6~10m·s~(-1);风力条件的变化导致了沙尘暴发生频率的降低,进而使得入黄风沙量减少,其影响周期与气候变化的周期有关。
英文摘要	Ulanbuh Desert is the main source of aeolian sand blown into the Upper Yellow River.Previous studies on the aeolian sand focused on the amount entering into the Yellow River and rarely involved variation of the influence factors that determine the amount variation of aeolian sand.Channel bank boundary, land use along the desert,and wind conditions and sandstorm frequency since 1950s have been analyzed with the long-term variation characteristics.Results showed that:The left levee with 33.086 km long has been built since 1990s,which redefined the left scope of the river.There are a 4.05-km-long movable dune adjacent to the river that has decreased greatly in comparison to that in 1980s.The semi-fixed dunes have a long distance to the river,where villages,farmlands,and land developed between the river and semi-fixed dunes. Meanwhile,the mean annual wind speed in the desert region has reduced by 1.0-1.3 m·s~(-1) since 1950s, and the maximum annual wind speed has also reduced by 6.0-10.0 m s~(-1) since early 1990s.Change of land use and the construction of the embankment somewhat restrain the amount of aeolian sand blown into the Yellow River.Variation of the meteorological conditions leads to the decrease of the frequency of sandstorms so as to reduce the aeolian sand amount accordingly.Moreover,the period of the meteorological conditions influencing aeolian sand is closely related to the cycle of climate change.
中文关键词	乌兰布和沙漠 ; 风沙 ; 土地利用 ; 气象条件 ; 黄河上游
英文关键词	Ulanbuh Desert aeolian sand land use meteorological condition Upper Yellow River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENGINEERING MULTIDISCIPLINARY
WOS研究方向	Engineering
CSCD记录号	CSCD:5910397
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235468
作者单位	1.黄河水利科学研究院, 水利部泥沙重点实验室, 郑州, 河南 450003, 中国; 2.水利部牧区水利科学研究所, 呼和浩特, 内蒙古 010020, 中国
推荐引用方式 GB/T 7714	田世民,姚文艺,郭建英,等. 乌兰布和沙漠风沙入黄影响因子变化特征[J],2016,36(6):1701-1707.
APA	田世民,姚文艺,郭建英,马涛,&李锦荣.(2016).乌兰布和沙漠风沙入黄影响因子变化特征.中国沙漠,36(6),1701-1707.
MLA	田世民,et al."乌兰布和沙漠风沙入黄影响因子变化特征".中国沙漠 36.6(2016):1701-1707.