Relationship between the Leaf Functional Traits and the Diameter Growth in Even-Aged Stands of Zenia insignis

被引：0
|
作者：
Zhang X. [1 ]
Zhong Q. [1 ,2 ,3 ]
Li B. [2 ,3 ]
Yao X. [4 ]
Xu C. [2 ,3 ]
Cheng D. [1 ,2 ,3 ]
Zheng Y. [1 ]
Yu H. [1 ,5 ]
机构：
[1] College of Geographical Sciences, Fujian Normal University, Fuzhou
[2] State Key Laboratory Breeding Base of Humid Subtropical Mountian Ecology, Fuzhou
[3] Fujian Province Key Laboratory of Plant Ecophysiology, Fujian Normal University, Fuzhou
[4] Shunchang County Forestry Science and Technology Center of Fujian Province, Shunchang
[5] College of Oceanography, Minjiang University, Fuzhou
来源：
Linye Kexue/Scientia Silvae Sinicae | 2020年 / 56卷 / 05期
关键词：
Correlations; Diameter growth; Leaf structural and functional traits; Principal component analysis; Zenia insignis;
D O I：
10.11707/j.1001-7488.20200519
中图分类号：
学科分类号：
摘要：
Objective: The tree diameter at breast height (DBH) is an important measurement factor in forest survey and forest management evaluation. In this study, the main leaf functional traits of different diameter classes in even-aged stands of Zenia insignis were determined in order to illuminate the relationship between the leaf functional traits and the diameter growth, which aims to provide theoretical basis for selection of excellent germplasm resources and precision nutrient management of Z. insignis. Method: Principal component analysis (PCA) was used to determine the main leaf functional traits affecting the DBH growth of the even-aged stand of Z. insignis. Result: Firstly, individual leaf area (ILA), specific leaf area (SLA), leaf relative water content (LRWC), leaf carbon content (LCC), leaf nitrogen content (LNC), leaf phosphorus content (LPC), leaf C: N ratio (C/N), leaf C: P ratio(C/P), leaf N: P ratio(N/P), leaf nitrogen content based on area (Narea), and leaf area phosphorus content based on area (Parea) differed significantly among different diameter classes. Secondly, leaf structural traits, such as ILA and LRWC, and leaf functional traits, such as Parea, C/P, LPC and N/P, had important impact on the DBH growth. ILA and Parea showed a significant linear positive correlation with the diameter growth (P<0.01). LRWC and leaf N/P showed a significant linear negative correlation with the DBH growth (P<0.01). There was a quadratic parabola relationship between leaf C/P and DBH growth, showing increase after slightly decrease (P<0.01). Whereas there was a quadratic parabola relationship between LPC and the DBH growth, showing decrease after slightly increase (P<0.05). Thirdly, the correlations between SLA, Narea, LCC, LNC and C/N were not significantly correlated with the DBH growth. Conclusion: Leaf structural and functional traits have important effects on the DBH growth of Z. insignis. ILA in structural traits as well as LPC and Parea in functional traits are the most important influencing factors. © 2020, Editorial Department of Scientia Silvae Sinicae. All right reserved.
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页码：168 / 175
页数：7
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