Diversity Pattern of Functional Traits of Tree Species Absorptive Roots in Montane Forest Communities

doi:10.3969/j.issn.1009-7791.2025.03.010

Subtropical Plant Science ›› 2025, Vol. 54 ›› Issue (3): 318-329.DOI: 10.3969/j.issn.1009-7791.2025.03.010

• Research articles • Previous Articles

Diversity Pattern of Functional Traits of Tree Species Absorptive Roots in Montane Forest Communities

LIU Xin1,3, CAO Min1, ZHANG Wen-fu1,3, JI Kui4, ZHANG Ya-zhou2*, YANG Jie1*

(1. Xishuangbanna Tropical Botanical Garden / Key Laboratory of Tropical Forest Ecology, Chinese Academy of Sciences, Menglun 666303, Yunnan China; 2. Kunming Institute of Botany, Chinese Academy of Sciences / CAS Key Laboratory for Plant Biodiversity and Biogeography of East Asia, Kunming 650201, Yunnan China; 3. University of Chinese Academy of Sciences, Beijing 100049, China; 4. Mengla Institute of Conservation, Xishuangbanna Administration of Nature Reserves, Mengla 666300, Yunnan China)

Received:2024-12-27 Accepted:2025-01-14 Published:2025-09-08
Contact: YANG Jie

山地森林群落树种吸收根功能性状多样性格局研究

刘欣1,3，曹敏1，张文富1,3，吉馗4，张亚洲2*，杨洁1*

(1. 中国科学院西双版纳热带植物园 / 热带森林生态学重点实验室，云南勐仑 666303；2. 中国科学院昆明植物研究所 / 中国科学院东亚植物多样性和生物地理学重点实验室，云南昆明 650201；3. 中国科学院大学, 北京 100049；4.云南西双版纳国家级自然保护区勐腊管护所, 云南勐腊 666300)

通讯作者: 杨洁
基金资助:
国家自然科学基金青年基金(32201315)

Abstract

Abstract: The research platform comprised sample plots with altitudinal gradients in three climatic zones: tropical, subtropical and subalpine. The objective was to study the pattern of α diversity of morphological, chemometric and defensive traits and their driving factors in absorptive roots (class 1–3 roots) of tree species in the sample plots. The highest overall α diversity of functional traits of absorptive roots was observed in the tropical region. This result indicated that the functional diversity of absorptive roots of community tree species is significantly higher at lower elevations, where nutrient conditions are more favourable and nutrient concentrations are higher. However, the results of the community null model analyses indicated a general consistency in the results for the three categories of absorptive root functional trait α diversity. Specifically, the standardised effect sizes (S.E.S.) for the absorptive root functional traits α diversity were found to be lower than the expected values or did not deviate significantly across all climatic regions. Furthermore, all three types of absorptive root functional traits exhibited a positive correlation with mean annual temperature, indicating that climatic factors are the primary determinants of variation in absorptive root functional trait diversity in montane tree species.

Key words: absorptive root; functional trait diversity; environmental gradient; altitudinal distribution pattern; null model; driving factors

摘要： 以热带、亚热带和亚高山三个气候带的海拔梯度样地为研究平台，分析样地树种吸收根(1～3级根)的形态性状、化学计量性状和防御性状的α多样性格局及其驱动因素。结果表明，整体上吸收根功能性状α多样性最高的区域是热带地区。在营养条件更好和养分浓度更高的低海拔地区，群落树种吸收根的功能多样性明显更高。然而，在群落零模型分析结果中，三类吸收根功能性状α多样性基本一致，即在所有气候区域内，吸收根功能性状α多样性的标准化效应量(S.E.S.)均比预期值更低或者没有显著偏差。此外，三类吸收根功能性状均与年平均温度呈正效应，表明气候因子是山地树种吸收根功能性状多样性变异的主要驱动因素。

关键词: 吸收根；功能性状多样性；环境梯度；海拔分布格局；零模型；驱动因素

CLC Number:

Q948

LIU Xin, CAO Min, ZHANG Wen-fu, JI Kui, ZHANG Ya-zhou, YANG Jie. Diversity Pattern of Functional Traits of Tree Species Absorptive Roots in Montane Forest Communities[J]. Subtropical Plant Science, 2025, 54(3): 318-329.

刘欣，曹敏，张文富，吉馗，张亚洲，杨洁. 山地森林群落树种吸收根功能性状多样性格局研究[J]. 亚热带植物科学, 2025, 54(3): 318-329.

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Diversity Pattern of Functional Traits of Tree Species Absorptive Roots in Montane Forest Communities

山地森林群落树种吸收根功能性状多样性格局研究

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