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

doi:10.1111/1365-2745.12977

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Multi-dimensional patterns of variation in root traits among coexisting herbaceous species in temperate steppes
	Zhou, Meng ; Bai, Wenming ; Zhang, Yushi ; Zhang, Wen-Hao
刊名	JOURNAL OF ECOLOGY
	2018
卷号	106 期号:6 页码:2320-2331
关键词	coexisting species phylogenetic clades phylogeny resource acquisition root economic spectrum root traits temperate grasslands
ISSN号	0022-0477
DOI	10.1111/1365-2745.12977
文献子类	Article
英文摘要	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.
学科主题	Plant Sciences ; Ecology
电子版国际标准刊号	1365-2745
出版地	HOBOKEN
WOS关键词	PLANT ECONOMICS SPECTRUM ; FINE-ROOT ; LIFE-SPAN ; ACQUISITION STRATEGIES ; FORAGING STRATEGIES ; TISSUE DENSITY ; BRANCH ORDER ; LEAF TRAITS ; RESPIRATION ; NITROGEN
语种	英语
出版者	WILEY
WOS记录号	WOS:000447412100013
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]
内容类型	期刊论文
源URL	[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.Univ Chinese Acad Sci, Beijing, Peoples R China 2.[Bai, Wenming 3.Chinese Acad Sci, Beijing Inst Life Sci, Res Network Global Change Biol, Beijing, Peoples R China 4.Chinese Acad Sci, Inner Mongolia Res Ctr Prataculture, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 6.[Zhou, Meng 7.Bai, Wenming 8.Zhang, Yushi
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.