Relationships among Leaf, Stem and Root Traits of the Dominant Shrubs from Four Vegetation Zones in Shaanxi Province, China
Relationships among Leaf, Stem and Root Traits of the Dominant Shrubs from Four Vegetation Zones in Shaanxi Province, China
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陕西省四个植被区优势灌木叶、茎、根性状的关系
DOI：
10.1163/22244662-06301005
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发表时间：
2017-02
影响因子：
1.2
通讯作者：
Yue Ming
中科院分区：
文献类型：
--
作者：
Wang Mao;Wan Pengcheng;Guo Jiangchao;Xu Jinshi;Chai Yongfu;Yue Ming
叶、茎和根作为植物的主要器官，具有特定的功能，共同调节生存、生长和繁殖。这些器官之间的关系是高优先级的研究，并且已经有许多关于它们之间的权衡的假设。然而，这些假设的结果是不一致和混乱的。本研究对27种优势灌木的叶、茎和木质根的15个核心性状进行了分析，并进一步检验了这些器官之间的关系。对陕西省荒漠、草原、温带森林和亚热带森林等9个样地的灌木进行了调查。不同器官性状间存在显著相关，如氮、磷含量在器官内或器官间均呈显著正相关。叶、茎、根的结构性状（含碳量和干物质含量）和矿质营养性状（含氮量和含磷量）间均呈显著正相关。本研究结果支持了叶与根、茎与根之间存在显著相关性的假设。同样，我们发现叶和茎加根之间的权衡表现出显着的相关性。因此，难以测量的根性状与叶和茎的性状相协调。研究结果表明，灌木叶组分是一个很好的整体经济谱的替代指标，通过叶组分经济谱的研究可以更好地理解灌木的整体经济谱。
Leaves, stems and roots as the main plant organs have specific functions and together modulate survival, growth and reproduction. The relationships between these organs are high research priority, and there have been many hypotheses about the trade-offs between them. However, the results of these hypotheses are inconsistent and confusing. In this study, we examined 15 core traits of leaves, stems and woody roots of 27 dominant shrub species and further tested the hypotheses about the relationships between these organs. Measurements were made for shrubs across 9 sites including desert, steppe, temperate forest and subtropical forest in Shaanxi Province of China. Many significant correlations of different organ traits were found, e.g. nitrogen and phosphorus content showed a significant positive correlation, either within or across organs. Also, representatives of structural traits (carbon content and dry matter content) and mineral nutrient traits (nitrogen and phosphorus content) showed significant positive correlations among the leaves, stems and roots. The results of this study supported the hypotheses that there were significant correlations between leaf and root and between stem and root. Similarly, we found that trade-off between leaf and stem-plus-root showed a significant correlation. Thus, root traits, which are difficult to measure, are coordinated with those of the leaf and stem. We conclude that the leaf component of shrubs is a good proxy for the whole-plant in studying trade-offs and it could provide a convenient way to understand the whole-plant economic spectrum by focusing on the leaf economic spectrum.
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影响因子：
64.8
作者：
Wright, IJ;Reich, PB;Villar, R
通讯作者：
Villar, R
影响因子：
8.8
作者：
Baraloto, Christopher;Paine, C. E. Timothy;Chave, Jerome
通讯作者：
Chave, Jerome
影响因子：
6.4
作者：
I. Wright;D. Falster;M. Pickup;M. Westoby
通讯作者：
I. Wright;D. Falster;M. Pickup;M. Westoby
影响因子：
2.7
作者：
Cornelissen, JHC;Quested, HM;Aerts, R
通讯作者：
Aerts, R
影响因子：
2.8
作者：
Weiher, E;van der Werf, A;Eriksson, O
通讯作者：
Eriksson, O