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		题名	作者	年代	出处	被引量
	1	Characteristics of surface runoff in a sandy area in southern Mu Us sandy land显示文摘To better understand the key role of biological soil crusts(BSCs) in redistribution processes of limited water resources in semi-arid sandy ecosystems,surface runoff over BSCs in a sandy area in the southern Mu Us sandy area was observed in this study.The results indicated that runoff occurred twice among six rainfall events during the experimental period.Runoff yields varied among types of BSCs,and that they increased in the following order:light algae crusts,dark algae crusts and moss crusts.These findings showed that runoff yields were increasing with the development of BSCs.The percentage of runoff in individual rainfall events increased from light algae crusts to moss crusts,which indicated that the redistribution ratios of different types of BSCs differed.Surface runoff of BSCs may be influenced by rainfall,rain intensity,degree of water saturation of the BSCs before the rain and degree of development of BSCs.Formation of BSCs on the surface of sand dunes changed the spatial distribution pattern of water in this semi-arid sandy ecosystem,which increased the heterogeneity of resources such as water and nutrients.Therefore,making appropriate disturbances of BSCs during storm season is beneficial to maintaining the balance of natural resources in the semi-arid sandy ecosystem.	WU YongSheng HASI Eerdun Wugetemole WU Xia	2012	Chinese Science Bulletin2012，57，2：	8

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