A whole-plant economics spectrum including bark functional traits for 59 subtropical woody plant species
A whole-plant economics spectrum including bark functional traits for 59 subtropical woody plant species
复制标题
DOI：
10.1111/1365-2745.13800
复制
发表时间：
2021-11-08
影响因子：
5.5
通讯作者：
Cheng, Dongliang
中科院分区：
文献类型：
--
作者：
Li, Jinlong;Chen, Xiaoping;Cheng, Dongliang
1. 全植物经济谱（PES）是指植物许多功能性状之间的权衡，这些性状通常被用作主要适应策略的指标，从而为植物分布、生态系统过程和进化提供见解。然而，对于不同叶片类型和生长习性（常绿与落叶种）的树皮、木材和叶片功能性状整合的所谓“全pes”的研究却很少。为了解决这方面的知识空白，本研究利用主成分分析（PCA）对59种具有代表性的亚热带木本植物的6个树皮性状、7个木材性状（包括机械支持和养分运输特征）和12个叶片性状（包括化学、结构和生理特征）进行了分析，以确定PES策略。树皮（BES）、木材（WES）和树叶（LES）以及整个PES的经济谱表明，主要性状代表资源获取策略和保护策略聚类在主成分分析轴的两端。25个功能性状之间存在显著的相关性。结果表明，氮磷水平处于BES、WES、LES和PES的中心关系。常绿和落叶树种具有不同的WES和LES，从而影响PES资源获取策略。除BES外，常绿树种在保守侧聚集，而落叶树种在获取侧聚集。合成。本文提出的PES有助于我们理解整个植物对环境差异的响应，特别是在整个植物水平上氮和磷性状的作用。揭示并进一步支持了常绿和落叶物种分别表现出保守和获取策略的观点，进一步为我们对物种生物多样性维持的认识提供了依据。
1. The whole-plant economics spectrum (PES) refers to the trade-offs among the many plant functional traits that are commonly used as indicators of major adaptive strategies, thereby providing insights into plant distributions, ecosystem processes and evolution. However, there are few studies of what may be called the whole-PES that integrates bark, wood and leaf functional traits for different leaf types and growth habits (evergreen vs. deciduous species).2. To address this gap in our knowledge, 6 bark traits, 7 wood traits (including mechanical support and nutrient transport characteristics) and 12 leaf traits (including chemical, structural and physiological characteristics) of 59 representative subtropical woody species were examined using principal component analysis (PCA) to determine PES strategies.3. The economics spectra of bark (BES), wood (WES) and leaves (LES), and the entire PES indicated that major traits represent resource acquisition strategies and conservation strategies clustering on the opposite ends of the PCA axis. A significant correlation was observed among the 25 functional traits. The data indicated that N and P nutrient levels were at the hub of BES, WES, LES and PES interrelationships. Evergreen and deciduous species had different WES and LES, and thus PES resource acquisition strategies. With the exception of the BES, evergreen species clustered on the conservative side, whereas deciduous species clustered on the acquisitive side.4. Synthesis. The PES presented here informs our understanding of whole-plant responses to environmental differences, particularly regarding the role of N and P traits at the whole-plant level. It also reveals and further supports the notion that evergreen and deciduous species, respectively, manifest conservative and acquisitive strategies, further informing our understanding of species biodiversity maintenance.