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	The relative importance of pre- and post-germination determinants for recruitment of an annual plant community on moving sandy land
	Li, FR; Zhao, LY; Zhao, XY; Zhang, TH; Li, GD
刊名	ANNALS OF BOTANY
	2005-12-01
卷号	96期号:7页码:1215-1223
关键词	annual plants community level Horqin Sandy Land path analysis recruitment dynamics recruitment success spatial variation seed deposition seedling emergence seedling survival
ISSN号	0305-7364
DOI	10.1093/aob/mci271
通讯作者	Li, FR(lfengrui@vip.163.com)
英文摘要	Background and Aims The relative importance of pre- and post-germination determinants for recruitment of natural plant communities is rarely explored. An annual plant community on moving sandy land was chosen for a case study. Answers to the following questions were sought: (a) Does recruitment of new individuals within the community of annual plants differ in time and space? (b) Is there spatial concordance between seed deposition, seedling emergence, survival and recruitment? (c) What are the direct and indirect effects of pre- and post-germination determinants on plant recruitment. Methods An integrative approach combining investigation of natural recruitment processes with regression, correlation and path analyses was adopted. Data on seed deposition and seedling recruitment were collected by monitoring the number of seeds deposited in the top 5 cm of the soil and the numbers of seedlings emerged and recruited from all annual plants at sites to a range of distances from the existing shrub Artemisia halodendron (Asteraceae) in eight compass directions for two consecutive growing seasons. Key Results Community-level recruitment was strongly affected by inter-annual rainfall variation and was highly site- and density-dependent. Low recruitment rate in this system was due to low emergence rate and low post-emergence survival rate. Of the pre- and post-germination determinants studied, it was the number of seedlings which emerged and the post-emergence survival rate that had the greatest direct effects on recruitment, with a combination of both variables explaining the majority of the variance (97%) in recruitment. Conclusions This study suggests that post-germination determinants (emergence and survival) rather than pre-germination determinants (seed deposition) substantially determined the final pattern of recruitment. Although the density of seeds deposited did not have a significant direct effect on recruitment, it contributed to observed variation in recruitment indirectly through density-dependent emergence of seedlings.
收录类别	SCI
WOS关键词	SEED DISPERSAL ; WIND DISPERSAL ; ARTEMISIA-HALODENDRON ; DENSITY-DEPENDENCE ; INNER-MONGOLIA ; PATTERNS ; LIMITATION ; FORESTS ; SOIL ; DESERTIFICATION
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000233399000006
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555718
专题	寒区旱区环境与工程研究所
通讯作者	Li, FR
作者单位	1.Chinese Acad Sci, Key Lab Desert & Desertificat Cold & Arid Reg, Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Wagga Wagga Agr Inst, PMB, NSW Dept Primary Ind, Wagga Wagga, NSW 2650, Australia
推荐引用方式 GB/T 7714	Li, FR,Zhao, LY,Zhao, XY,et al. The relative importance of pre- and post-germination determinants for recruitment of an annual plant community on moving sandy land[J]. ANNALS OF BOTANY,2005,96(7):1215-1223.
APA	Li, FR,Zhao, LY,Zhao, XY,Zhang, TH,&Li, GD.(2005).The relative importance of pre- and post-germination determinants for recruitment of an annual plant community on moving sandy land.ANNALS OF BOTANY,96(7),1215-1223.
MLA	Li, FR,et al."The relative importance of pre- and post-germination determinants for recruitment of an annual plant community on moving sandy land".ANNALS OF BOTANY 96.7(2005):1215-1223.

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