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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 | |
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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