Facilitation by a Spiny Shrub on a Rhizomatous Clonal Herbaceous in Thicketization-Grassland in Northern China: Increased Soil Resources or Shelter from Herbivores

doi:10.1038/s41477-017-0067-8

	Facilitation by a Spiny Shrub on a Rhizomatous Clonal Herbaceous in Thicketization-Grassland in Northern China: Increased Soil Resources or Shelter from Herbivores
	Saixiyala 1; Yang, Ding 1; Zhang, Shudong 2; Liu, Guofang ; Yang, Xuejun ; Huang, Zhenying; Ye, Xuehua
	2017
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
卷号	8
摘要	The formation of fertility islands by shrubs increases soil resources heterogeneity in thicketization-grasslands. Clonal plants, especially rhizomatous or stoloniferous clonal plants, can form large clonal networks and use heterogeneously distributed resources effectively. In addition, shrubs, especially spiny shrubs, may also provide herbaceous plants with protection from herbivores, acting as 'shelters'. The interaction between pre-dominated clonal herbaceous plants and encroaching shrubs remains unclear in thicketization-grassland under grazing pressure. We hypothesized that clonal herbaceous plants can be facilitated by encroached shrubs as a 'shelter from herbivores' and/or as an 'increased soil resources' under grazing pressure. To test this hypothesis, a total of 60 quadrats were chosen in a thicket-grassland in northern China that was previously dominated by Leymus chinensis and was encroached upon by the spiny leguminous plant Caragana intermedia. The soil and plant traits beneath and outside the shrub canopies were sampled, investigated and contrasted with an enclosure. The soil organic matter, soil total nitrogen and soil water content were significantly higher in the soil beneath the shrub canopies than in the soil outside the canopies. L. chinensis beneath the shrub canopies had significantly higher plant height, single shoot biomass, leaf length and width than outside the shrub canopies. There were no significantly differences between plant growth in enclosure and outside the shrub canopies. These results suggested that under grazing pressure in a grassland undergoing thicketization, the growth of the rhizomatous clonal herbaceous plant L. chinensis was facilitated by the spiny shrub C. intermedia as a 'shelter from herbivores' more than through 'increased soil resources'. We propose that future studies should focus on the community- and ecosystem-level impacts of plant clonality.
关键词	clonal plant Caragana intermedia environmental heterogeneity fertility islands Leymus chinensis shelter from herbivores thicketization of grassland
学科领域	Plant Sciences
DOI	10.1038/s41477-017-0067-8
收录类别	SCI
语种	英语
WOS关键词	WOODY PLANT INVASION ; ENVIRONMENTAL HETEROGENEITY ; PHYSIOLOGICAL INTEGRATION ; CALCAREOUS GRASSLANDS ; POSITIVE INTERACTIONS ; SPATIAL-DISTRIBUTION ; AUSTRALIAN SAVANNA ; SPECIES DIVERSITY ; LEYMUS-SECALINUS ; VEGETATION COVER
WOS记录号	WOS:000419067900015
出版者	FRONTIERS MEDIA SA
文献子类	Article
出版地	LAUSANNE
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31470032] ; Initiative Projects of Inner Mongolia Research Center for Prataculture, Chinese Academy of Sciences
作者邮箱	zhenying@ibcas.ac.cn ; yexuehua@ibcas.ac.cn
作品OA属性	hybrid
引用统计	被引频次：133[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22328
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Inner Mongolia Res Ctr Prataculture, Beijing, Peoples R China 2.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Saixiyala,Yang, Ding,Zhang, Shudong,et al. Facilitation by a Spiny Shrub on a Rhizomatous Clonal Herbaceous in Thicketization-Grassland in Northern China: Increased Soil Resources or Shelter from Herbivores[J]. FRONTIERS IN PLANT SCIENCE,2017,8.
APA	Saixiyala.,Yang, Ding.,Zhang, Shudong.,Liu, Guofang.,Yang, Xuejun.,...&Ye, Xuehua.(2017).Facilitation by a Spiny Shrub on a Rhizomatous Clonal Herbaceous in Thicketization-Grassland in Northern China: Increased Soil Resources or Shelter from Herbivores.FRONTIERS IN PLANT SCIENCE,8.
MLA	Saixiyala,et al."Facilitation by a Spiny Shrub on a Rhizomatous Clonal Herbaceous in Thicketization-Grassland in Northern China: Increased Soil Resources or Shelter from Herbivores".FRONTIERS IN PLANT SCIENCE 8(2017).

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