Multi-dimensional patterns of variation in root traits among coexisting herbaceous species in temperate steppes

doi:10.1111/1365-2745.12977

	Multi-dimensional patterns of variation in root traits among coexisting herbaceous species in temperate steppes
	Zhou, Meng ; Bai, Wenming; Zhang, Yushi ; Zhang, Wen-Hao
	2018
发表期刊	JOURNAL OF ECOLOGY
ISSN	0022-0477
卷号	106 期号:6 页码:2320-2331
摘要	Characterizing patterns of variation in plant traits across species and environmental gradients is critical for understanding performance of species in ecosystems. One-dimensional pattern of variation has been demonstrated in leaf traits, which is known as the leaf economic spectrum. However, it is unclear whether such a spectrum exists for root traits. For roots of 15 species from temperate grasslands, we determined respiration rate, relative growth rate, life span and 10 morphological, chemical and anatomical root traits. We further evaluated pairwise and multiple-trait relationships by Pearson's correlation and principle component analysis including phylogenetic contrasts. We found that root functions were related to three clusters of variation. Root respiration rate and relative growth rate were positively correlated with average root diameter (AD), but they were negatively correlated with specific root length (SRL). In contrast, root life span was not correlated with AD, but it was positively correlated with SRL. These results are inconsistent with the presumption of the root economic spectrum. The principle components analysis revealed a multi-dimensional pattern of variation in root traits among the 15 coexisting herbaceous species. Moreover, species within the same phylogenetic clades tended to have similar root trait syndromes. Most of the root traits exhibited a significant phylogenetic signal. Synthesis. Our results do not support a one-dimensional root economic spectrum in the coexisting herbaceous species of temperate grasslands. In contrast, the pattern of variation in root traits was multi-dimensional. We further demonstrated that species in different phylogenetic clades possess diverse root trait syndromes for efficient resource acquisition. Our findings provide a next step in understanding root functions and plant strategies in temperate grasslands.
关键词	coexisting species phylogenetic clades phylogeny resource acquisition root economic spectrum root traits temperate grasslands
学科领域	Plant Sciences ; Ecology
DOI	10.1111/1365-2745.12977
收录类别	SCI
语种	英语
WOS关键词	PLANT ECONOMICS SPECTRUM ; FINE-ROOT ; LIFE-SPAN ; ACQUISITION STRATEGIES ; FORAGING STRATEGIES ; TISSUE DENSITY ; BRANCH ORDER ; LEAF TRAITS ; RESPIRATION ; NITROGEN
WOS记录号	WOS:000447412100013
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2745
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670481, 31370468] ; State Key Basic Research Development Program of China [2016YFC0500706]
作者邮箱	bwming@ibcas.ac.cn ; whzhang@ibcas.ac.cn
作品OA属性	Bronze
引用统计	被引频次：50[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/2S10CLM1/20614
专题	植被与环境变化国家重点实验室
作者单位	1.[Zhou, Meng 2.Bai, Wenming 3.Zhang, Yushi 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China 6.[Bai, Wenming 7.Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing, Peoples R China 8.Chinese Acad Sci, Inner Mongolia Res Ctr Prataculture, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Meng,Bai, Wenming,Zhang, Yushi,et al. Multi-dimensional patterns of variation in root traits among coexisting herbaceous species in temperate steppes[J]. JOURNAL OF ECOLOGY,2018,106(6):2320-2331.
APA	Zhou, Meng,Bai, Wenming,Zhang, Yushi,&Zhang, Wen-Hao.(2018).Multi-dimensional patterns of variation in root traits among coexisting herbaceous species in temperate steppes.JOURNAL OF ECOLOGY,106(6),2320-2331.
MLA	Zhou, Meng,et al."Multi-dimensional patterns of variation in root traits among coexisting herbaceous species in temperate steppes".JOURNAL OF ECOLOGY 106.6(2018):2320-2331.

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