干旱区生态环境知识资源中心(Arid): 民勤绿洲外围不同下垫面条件下风沙流结构的观测研究

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	民勤绿洲外围不同下垫面条件下风沙流结构的观测研究
其他题名	Study on Structure of Drifting Sand Flux under Different Underlying Surface Conditions of Minqin Oasis External
	王自龙; 赵明; 冯向东; 王多泽; 詹科杰; 王强强; 郭树江
ISSN	1009-2242
出版年	2009
卷号	23 期号:4 页码:72-75,108
中文摘要	对民勤绿洲外围特定环境背景条件下不同下垫面的风沙流结构进行了实地观测和对比研究.结果表明:相同条件下无盖度流动沙丘输沙率顶部>中部>底部,白刺平坦砾质沙地上输沙率的大小与地表粗糙度成反比,与沙丘盖度成反比.且这两种下垫面风沙流结构(0～30 cm)都遵循负指数曲线(Q=ae~(bh));白刺沙包不同部位风沙流结构遵循幂函数规律(Q=ah~b)变化;不论梭梭疏透度如何变化,风沙流结构都遵循幂函数规律(Q=ah~b);从防风固沙的效果来看.尼龙网沙障的防沙能力最好,麦草沙障次之,粘土沙障最弱;而从整个研究时段总的输沙率来看,流动沙丘＞丘间砾质沙地＞梭梭林＞白刺包＞黏土沙障＞麦草沙障＞尼龙网沙障.
英文摘要	Through observation and research on the different underlying surface of Minqin oasis external.The results showed that at the same condition the trend sand transport rate of no cover moving sand dune is the top is bigger than that in central and then at the bottom.The trend sand transport rate on Nitraria tangutorum smoothness gravel sandy land is inverserly proportional to surface roughness and dune coverage.Both of these two 0～30 cm Structures of drifting sand flux follow curve Q=ae~(bh);Structures of drifting sand flux on Nitraria tangutorum dune at different part are following curve Q=ah~b,so do the Haloxylon ammodendron woodland and no matter how it changed.The effect of prevention show that nylon sand barrier is more effective than wheat straw checkerboard and clay fence belt is less effective.The determination of annual total structureof drifting sand flux showed that no cover moving sand dune is the most,then Nitraria tangutorum smoothness gravel sandy land,then Haloxylon ammodendron forest and then Nitraria tangutorum dune,clay fence belt is the least.
中文关键词	民勤 ; 风沙流结构 ; 输沙率
英文关键词	Minqin structure of drifting sand flux the trend sand transport rate
语种	中文
国家	中国
收录类别	CSCD
WOS类目	OCEANOGRAPHY ; AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Oceanography ; Agriculture
CSCD记录号	CSCD:3695590
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224189
作者单位	甘肃民勤荒漠草地生态系统国家野外科学观测研究站, 武威, 甘肃 733300, 中国
推荐引用方式 GB/T 7714	王自龙,赵明,冯向东,等. 民勤绿洲外围不同下垫面条件下风沙流结构的观测研究[J],2009,23(4):72-75,108.
APA	王自龙.,赵明.,冯向东.,王多泽.,詹科杰.,...&郭树江.(2009).民勤绿洲外围不同下垫面条件下风沙流结构的观测研究.,23(4),72-75,108.
MLA	王自龙,et al."民勤绿洲外围不同下垫面条件下风沙流结构的观测研究".23.4(2009):72-75,108.