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	Study on soil microbiotic crust and its influences on sand-fixing vegetation in arid desert region
	Li, XR; Zhang, JG; Wang, XP; Liu, LC; Xiao, HL
刊名	ACTA BOTANICA SINICA
	2000-09-01
卷号	42期号:9页码:965-970
关键词	arid desert region microbiotic crust sand-fixing vegetation
ISSN号	0577-7496
通讯作者	Li, XR()
英文摘要	Based on secular fared-site data in the artificial sand-fixing vegetation district at the southeast fringe of the Tengger Desert, the formative characteristics of soil microbiotic crusts and its influences on vegetation dynamics were analyzed. Once sand barrier and artificial vegetation have stabilized the surface of the sifting sand, could form aeolian deposition crust and then evolve into algae-dominated crust. Such processes result from the interactions of physical effects of atmospheric dust and silt deposition on sand surface, sinking and raindrop impact, and soil microorganism activities. Under the condition of less than 200 mm precipitation, the presence of microbiotic crust changes the soil hydraulic conductivity, alters the temporal and spatial distribution of the limited precipitation in sand layer and leads to the decline of deep-rooted shrubs. The development of microbiotic crust and subsurface soil affects the plant growth and seed rain distribution, as a result, the diversity of plant species gradually tend to become saturated and finally affects the vegetation stability.
收录类别	SCI
WOS关键词	CRYPTOGAMS ; AUSTRALIA ; NEGEV ; AREA
WOS研究方向	Biochemistry & Molecular Biology ; Plant Sciences
WOS类目	Biochemistry & Molecular Biology ; Plant Sciences
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000089688900015
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556661
专题	寒区旱区环境与工程研究所
通讯作者	Li, XR
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Li, XR,Zhang, JG,Wang, XP,et al. Study on soil microbiotic crust and its influences on sand-fixing vegetation in arid desert region[J]. ACTA BOTANICA SINICA,2000,42(9):965-970.
APA	Li, XR,Zhang, JG,Wang, XP,Liu, LC,&Xiao, HL.(2000).Study on soil microbiotic crust and its influences on sand-fixing vegetation in arid desert region.ACTA BOTANICA SINICA,42(9),965-970.
MLA	Li, XR,et al."Study on soil microbiotic crust and its influences on sand-fixing vegetation in arid desert region".ACTA BOTANICA SINICA 42.9(2000):965-970.

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