干旱区生态环境知识资源中心(Arid): 青海湖沙地人工治理沙丘的风速廓线变化特征

Arid

	青海湖沙地人工治理沙丘的风速廓线变化特征
其他题名	Variable Characteristics of Wind Profile of the Artificial Sand Dune in Sandy Land around the Qinghai Lake
	吴汪洋; 张登山; 田丽慧; 赵超; 贾飞飞
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2013
卷号	20 期号:6 页码:162-167
中文摘要	对青海湖湖东沙地麦草方格沙障结合沙棘实生苗的人工治理沙丘进行风速廓线及其风沙防护效益研究,结果表明,人工治理措施明显降低了沙丘各部位的近地层风速,增强了高层风速。与流动沙丘相比,垂向风速增加率的差异使人工治理沙丘不同部位的超越高度值出现坡脚>坡中>丘顶的规律。风速垂向气流的变异导致不同高度层的防风固沙效果不同,低层风沙防护效益显著高于中、高层。同时结合坡度,植被盖度等因子,分析了影响风速廓线的变化原因,从而为青海湖沙地人工治理效果进行评估与初步指导。
英文摘要	Through the study of wind profile and sand flow in the sand area of the eastern shore of Qignhai Lake,which the technique of straw-checkerboard combining with sea-buckthorn seeding is experimented and promoted,it can be found that the low layers wind speed decreased obviously while high layers got increased in each position of artificial sand dune compared with the mobile dune.This is mainly due to the vertical change rates of the wind speed.Moreover,there is a surpass height which is higher at the foot of the slope and lower at the top between the artificial and mobile sand dunes,which leads to the better effects of wind prevention and sand fixation in the surface layer.Besides the difference of sand dune gradient,vegetation coverage and the average sand grain size have effects on the change of the wind profile.These results above will make a preliminary evaluation and provide basic guide to the management of desertification around the Qinghai Lake.
中文关键词	风速廓线 ; 人工治理沙丘 ; 风速增加率 ; 防风固沙
英文关键词	wind profile artificial sand dune wind speed increase rate wind prevention and sand fixation
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:5016140
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230215
作者单位	北京师范大学, 环境演变与自然灾害教育部重点实验室, 北京 100875, 中国
推荐引用方式 GB/T 7714	吴汪洋,张登山,田丽慧,等. 青海湖沙地人工治理沙丘的风速廓线变化特征[J]. 北京师范大学,2013,20(6):162-167.
APA	吴汪洋,张登山,田丽慧,赵超,&贾飞飞.(2013).青海湖沙地人工治理沙丘的风速廓线变化特征.水土保持研究,20(6),162-167.
MLA	吴汪洋,et al."青海湖沙地人工治理沙丘的风速廓线变化特征".水土保持研究 20.6(2013):162-167.