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	Modeling the effects of crust on rain infiltration in vegetated sand dunes in arid desert
	Li, T; Xiao, HL; Li, XR
刊名	ARID LAND RESEARCH AND MANAGEMENT
	2001
卷号	15期号:1页码:41-48
关键词	soil moisture precipitation stabilization of sand dune Shapotou
ISSN号	1532-4982
通讯作者	Li, T()
英文摘要	Shapotou Desert Research Station is located at the southeast edge of Tengger Desert in China. Shapotou sand dunes have been vegetated to stabilize them. The vegetated dunes have been completely covered by a natural crust. Rain infiltration was reduced by 36% to 74% on the crusted site while there was no reduction of rain infiltration on the sandy site. The infiltration rate was positively correlated with total rainfall and negatively correlated with rain intensity. Runoff on the crusted site provided water for vegetation growth in the hollows between sand dunes. The crust significantly impeded increased soil moisture. To increase soil moisture in the surface 40 cm layer, rainfall had to be above 8.5 mm on the slopes of sand dunes on the crust site, and increased with rain intensity. In the Shapotou area, the amount of rainfall that vegetation on slopes of sand dunes could utilize, was reduced to about 40 mm per year by the crust, although the mean annual precipitation was approximately 180 mm. It is expected that vegetation cover will continuously degrade in the future. To maintain vegetative cover adequate to stabilize the active sand dune, it was necessary to break part of the crust at slope of sand dune.
收录类别	SCI
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
WOS类目	Environmental Sciences ; Soil Science
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000171119700005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556694
专题	寒区旱区环境与工程研究所
通讯作者	Li, T
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Shapotou Desert Res Stn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, T,Xiao, HL,Li, XR. Modeling the effects of crust on rain infiltration in vegetated sand dunes in arid desert[J]. ARID LAND RESEARCH AND MANAGEMENT,2001,15(1):41-48.
APA	Li, T,Xiao, HL,&Li, XR.(2001).Modeling the effects of crust on rain infiltration in vegetated sand dunes in arid desert.ARID LAND RESEARCH AND MANAGEMENT,15(1),41-48.
MLA	Li, T,et al."Modeling the effects of crust on rain infiltration in vegetated sand dunes in arid desert".ARID LAND RESEARCH AND MANAGEMENT 15.1(2001):41-48.

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