干旱区生态环境知识资源中心(Arid): 库布齐沙漠新材料沙障的风速廓线特征

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	库布齐沙漠新材料沙障的风速廓线特征
其他题名	Wind Profile Characteristics of New Materials Sand-Barriers in Hobq Desert
	郭彩贇; 韩致文; 钟帅; 李爱敏
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2017
卷号	37 期号:5 页码:260-265
中文摘要	[目的]在库布齐沙漠杭锦旗独贵塔拉工业区测试HDPE网和植物纤维网新材料沙障防沙技术,为工程沙障对比优选提供理论支持。[方法]采用Met One 014A/024A型8通道风速风向仪(CR200X数采仪),观测沙障内20,80,150和200cm这4个高度的1min平均风速,对比分析不同材料、规格、高度的方格沙障及前沿高立式阻沙栅栏影响下的风速廓线特征。[结果](1)几种不同规格和高度的HDPE网和植物纤维网方格沙障及前沿高立式阻沙栅栏,都能显著降低近地表风速,具有良好的防风固沙效应。(2)方格沙障中心风速垂直变化幅度和变化规律,仅与沙障平面规格和外露高度密切相关,与试验材料基本无关;相同平面规格的方格沙障,外露高度越大,降风效果越显著;相同外露高度的方格沙障,小规格沙障的降风效果较为显著。(3)沙障防风固沙效益对比,需要充分考虑地貌部位、坡向、坡度、地表状况等的影响,对比观测未实施防沙措施的裸沙区对应地貌部位的输沙强度、风沙流场等因素,以便准确获取工程沙障效益参数。[结论]库布齐沙漠采用的新材料工程沙障措施具有显著的降风效应,在库布齐沙区的生态治理领域具有良好的推广前景。
英文摘要	[Objective]The experiments about the new materials of HDPE net and plant fiber net were conducted in Hangjin Banner,Duguitala industrial zone of Hobq Desert,in order to provide theoretical support for the sand-barrier optimization.[Methods]The Met One 014A/024A8 channel anemometers(acquisition instrument CR200X)were used to observe the 1min-averaged wind speed at the heights of 20cm,80cm,150cm and 200cm,and the wind profiles under the effects of sand-barriers with different materials,specifications,heights of the checkboard barriers and the highly-set vertical sand barriers were comprised and analyzed. [Results](1)The high parallel sand-barriers,HDPE and plant fiber net sand-barriers with different specifications all could significantly reduce the surface velocity,they also had good sand-fixing benefit.(2)The vertical wind variation range and regularity measured in the center of the checkboard barriers were found strongly related to the sand-barrier plane specification and the exposing height,no relation was found with the materials.Under the same test specification condition,the higher the exposed height was,the much the velocity was reduced.At the checkboards with the same exposure height,the reducing effect of velocity with small size sand-barrier was more obvious.(3)The determination of the sand-fixing effect of sand-barriers with different specifications should take a full consideration of the influences of the topography position,slope direction,slope gradient and surface conditions.Besides that,it also needs to observe the sediment transport intensity,sand-flow field and other factors of the bare land topography that is not within the measurement zone.All these are essential to obtain the effectiveness of the engineering barrier accurately. [Conclusion]The sand barrier of the new material used in the Hobq desert had excellent effects of reducing velocity,and it has great application prospect in the ecological field.
中文关键词	库布齐沙漠 ; 防沙试验 ; 新材料沙障 ; 风速廓线
英文关键词	Hobq desert desert preventive experiment new material sand barriers wind profiles
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:6114396
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236654
作者单位	中国科学院西北生态环境资源研究院, 中国科学院沙漠与沙漠化重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	郭彩贇,韩致文,钟帅,等. 库布齐沙漠新材料沙障的风速廓线特征[J]. 中国科学院西北生态环境资源研究院,2017,37(5):260-265.
APA	郭彩贇,韩致文,钟帅,&李爱敏.(2017).库布齐沙漠新材料沙障的风速廓线特征.水土保持通报,37(5),260-265.
MLA	郭彩贇,et al."库布齐沙漠新材料沙障的风速廓线特征".水土保持通报 37.5(2017):260-265.