Anatomical Determinants of Wood Density of Eight Broad-Leaved Tree Species in Baotianman and Their Coordination and Trade-off with Leaf Traits

被引：0

作者：

Hang Y. ^{[1
,2
,3
]}

Chen Z. ^{[2
,3
]}

Wang L. ^{[1
]}

Niu B. ^{[2
,3
]}

Liu S. ^{[4
]}

Yu B. ^{[4
]}

Wang X. ^{[4
]}

Liu S. ^{[4
]}

机构：

[1] College of Forestry, Shanxi Agricultural University, Jinzhong

[2] Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration Ecology, Nature Conservation Institute, Chinese Academy of Forestry, Beijing

[3] Baotianman Forest Ecosystem Research Station, Nanyang

[4] Henan Baotianman Nature Reserve Administration, Neixiang

来源：

Linye Kexue/Scientia Silvae Sinicae | 2024年 / 60卷 / 04期

关键词：

fiber trait; functional trait; relative water content at turgor loss point; wood density; xylem anatomy;

D O I：

10.11707/j.1001-7488.LYKX20230646

中图分类号：

学科分类号：

摘要：

【 Objective】 This study aims to explore the anatomical mechanisms that affect wood density and reveal the coordination and trade-off relationships of anatomy and physiological traits between stems and leaves traits can deepen the understanding of physiological and ecological mechanisms of different tree species adapting to the environment. 【Method】Eight common deciduous broad-leaved tree species in the natural forest of Baotianman were selected as the research objects. Twenty-one stem and leaf traits of these tree species, including wood density, xylem vessels and fibers and other anatomical traits, and leaf pressure volume curve parameters, were measured to explore the anatomical traits that determine wood density and to analyze the coordination and trade-off between stem and leaf traits. 【Result】1) The wood density of 8 tree species in this study was not correlated with the proportions of the three major tissues that make up the xylem: vessels, parenchyma tissue and fiber tissue. Wood density was more influenced by traits of fiber cells. 2) The xylem traits that have the greatest impact on wood density was the ratio of fiber lumen to cross-sectional area, followed by the ratio of fiber wall to fiber cell, the ratio of fiber wall thickness to lumen diameter and the fiber cell wall thickness. 3) Wood density was negatively correlated with individual leaf area, relative water content at turgor loss point and elasticity modulus. 4) The relative water content at turgor loss point was positively related to hydraulic vessel diameter, maximum vessel diameter, mean vessel diameter, fiber cell lumen area and fiber cell lumen diameter, and negatively related to vessel density, the ratio of fiber wall thickness to lumen diameter and the ratio of fiber wall to cross-sectional area. 【Conclusion】The wood density is mainly determined by the fiber cell traits, rather than the traits of vessel and parenchyma tissue. The strong capacity of leaves to tolerate dehydration is coupled with the dense stem fiber cells and wood density. © 2024 Chinese Society of Forestry. All rights reserved.

引用

页码：62 / 70

页数：8

共 27 条

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