Effects of Trampling on Morphological and Mechanical Traits of Dryland Shrub Species Do Not Depend on Water Availability

doi:10.1371/journal.pone.0053021

	Effects of Trampling on Morphological and Mechanical Traits of Dryland Shrub Species Do Not Depend on Water Availability
	Xu, Liang 4; Freitas, Sofia M. A.; Yu, Fei-Hai ; Dong, Ming 4; Anten, Niels P. R.; Werger, Marinus J. A.
	2013
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	8 期号:1
摘要	In semiarid drylands water shortage and trampling by large herbivores are two factors limiting plant growth and distribution. Trampling can strongly affect plant performance, but little is known about responses of morphological and mechanical traits of woody plants to trampling and their possible interaction with water availability. Seedlings of four shrubs (Caragana intermedia, Cynanchum komarovi, Hedysarum laeve and Hippophae rhamnoides) common in the semiarid Mu Us Sandland were grown at 4% and 10% soil water content and exposed to either simulated trampling or not. Growth, morphological and mechanical traits were measured. Trampling decreased vertical height and increased basal diameter and stem resistance to bending and rupture (as indicated by the increased minimum bend and break force) in all species. Increasing water availability increased biomass, stem length, basal diameter, leaf thickness and rigidity of stems in all species except C. komarovii. However, there were no interactive effects of trampling and water content on any of these traits among species except for minimum bend force and the ratio between stem resistance to rupture and bending. Overall shrub species have a high degree of trampling resistance by morphological and mechanical modifications, and the effects of trampling do not depend on water availability. However, the increasing water availability can also affect trade-off between stem strength and flexibility caused by trampling, which differs among species. Water plays an important role not only in growth but also in trampling adaptation in drylands.
学科领域	Multidisciplinary Sciences
DOI	10.1371/journal.pone.0053021
收录类别	SCI
语种	英语
WOS关键词	BEAN-PLANTS ; GROWTH ; VEGETATION ; STRESS ; RESISTANCE ; THIGMOMORPHOGENESIS ; HETEROGENEITY ; AVOIDANCE ; TOLERANCE ; DIVERSITY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000313682700018
出版者	PUBLIC LIBRARY SCIENCE
文献子类	Article
出版地	SAN FRANCISCO
资助机构	NSFC(National Natural Science Foundation of China (NSFC)) ; Hangzhou Normal University ; KNAW grant
作者邮箱	Yu, Fei-Hai/O-9395-2016
作品OA属性	Green Submitted, Green Published, gold
引用统计	被引频次：17[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/2S10CLM1/27838
专题	植被与环境变化国家重点实验室
作者单位	1.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou, Zhejiang, Peoples R China 2.Xu, Liang; Freitas, Sofia M. A.; Anten, Niels P. R.; Werger, Marinus J. A.] Univ Utrecht, Inst Environm Biol, Utrecht, Netherlands 3.Beijing Forestry Univ, Coll Nat Conservat, Beijing, Peoples R China 4.Anten, Niels P. R.] Wageningen Univ, Ctr Crop Syst Anal, NL-6700 AP Wageningen, Netherlands 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Xu, Liang,Freitas, Sofia M. A.,Yu, Fei-Hai,et al. Effects of Trampling on Morphological and Mechanical Traits of Dryland Shrub Species Do Not Depend on Water Availability[J]. PLOS ONE,2013,8(1).
APA	Xu, Liang,Freitas, Sofia M. A.,Yu, Fei-Hai,Dong, Ming,Anten, Niels P. R.,&Werger, Marinus J. A..(2013).Effects of Trampling on Morphological and Mechanical Traits of Dryland Shrub Species Do Not Depend on Water Availability.PLOS ONE,8(1).
MLA	Xu, Liang,et al."Effects of Trampling on Morphological and Mechanical Traits of Dryland Shrub Species Do Not Depend on Water Availability".PLOS ONE 8.1(2013).

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