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	Effect of biological soil crusts on seed germination and growth of an exotic and two native plant species in an arid ecosystem
	Song, Guang1,2; Li, Xinrong1; Hui, Rong
刊名	PLOS ONE
	2017-10-04
卷号	12期号:10页码:16
ISSN号	1932-6203
DOI	10.1371/journal.pone.0185839
通讯作者	Li, Xinrong(Lxinrong@lzb.ac.cn)
英文摘要	Biological soil crusts (BSCs) can improve the stability and health of native plant communities in arid ecosystems. However, it is unknown whether BSCs can also inhibit invasions of exotic vascular plants on stabilized reclaimed sand dunes. To answer this question, we conducted a greenhouse experiment to test the effects of cyanobacteria-dominated BSCs on 1) seed germination and biomass of an exotic grass (Stipa glareosa P. Smirn.), and 2) individual biomass of the exotic S. glareosa growing with two native plants, Eragrostis poaeoides Beauv. and Artemisia capillaris Thunb. Our experiment included three BSC treatments (intact crust, disturbed crust, and bare soil) and five species trials (native E. poaeoides alone, E. poaeoides mixed with exotic S. glareosa, native A. capillaris alone, A. capillaris mixed with exotic S. glareosa, and S. glareosa alone). The results showed that cyanobacteria-dominated crusts can significantly reduce the cumulative percent germination of the exotic grass (P < 0.001) and native plants (P < 0.001). Maximum cumulative percent germinations of the exotic grass and two native plants were found in bare soil, and minimum in intact crusts. The interaction of crust treatment x species trials on shoot biomass of the two native plants was significant (P < 0.05). These results indicate that the presence of BSCs on stabilized sand dunes may reduce the germination of the exotic and two native plants. The effect of reducing exotic and native plant seeds germination would maintain more diverse plant communities and contribute to the formation of clumped vegetation patterns. We conclude that BSCs act as a natural regulator for vegetation patterns and thus promote ecosystem stability and sustainability.
收录类别	SCI
WOS关键词	ALTERS NITROGEN DYNAMICS ; BROMUS-TECTORUM INVASION ; TENGGER-DESERT ; NORTHERN CHINA ; SAND DUNES ; ECOLOGICAL RESTORATION ; MICROBIOTIC CRUSTS ; REVEGETATED AREA ; VASCULAR PLANTS ; COMMUNITIES
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000412163100049
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557695
专题	寒区旱区环境与工程研究所
通讯作者	Li, Xinrong
作者单位	1.Chinese Acad Sci, Shapotou Desert Res & Expt Stn, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Song, Guang,Li, Xinrong,Hui, Rong. Effect of biological soil crusts on seed germination and growth of an exotic and two native plant species in an arid ecosystem[J]. PLOS ONE,2017,12(10):16.
APA	Song, Guang,Li, Xinrong,&Hui, Rong.(2017).Effect of biological soil crusts on seed germination and growth of an exotic and two native plant species in an arid ecosystem.PLOS ONE,12(10),16.
MLA	Song, Guang,et al."Effect of biological soil crusts on seed germination and growth of an exotic and two native plant species in an arid ecosystem".PLOS ONE 12.10(2017):16.

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