文献类型：期刊文献

中文题名：木射线结构特征与分析方法的研究进展

英文题名：Research progress on wood ray structure characteristics and analysis methods

作者：郭娟[1] 尹丽娟[1,2] 马灵玉[1] 姜笑梅[1] 孟秋露[1] 姚利宏[3]

第一作者：郭娟

机构：[1]中国林业科学研究院木材工业研究所,北京100091;[2]内蒙古自治区赤峰市巴林左旗商务和投资促进局,赤峰025450;[3]内蒙古农业大学材料科学与艺术设计学院,呼和浩特010018

年份：2025

卷号：10

期号：5

起止页码：14-24

中文期刊名：林业工程学报

外文期刊名：Journal of Forestry Engineering

收录：;北大核心:【北大核心2023】；

基金：中央级公益性科研院所基本科研业务费专项(CAFYBB2021QC003)。

语种：中文

中文关键词：木射线;射线薄壁细胞;微观构造;超微观构造;化学结构特征

外文关键词：wood rays;ray parenchyma cell;microstructure;ultrastructure;chemical structural characteristics

分类号：S781

摘要：木射线几乎是所有树木都具有的重要径向组织,为树木的径向及侧向运输提供保障,也影响木材的多项物理力学性能以及木材加工与利用。然而,木射线组织比量低、细胞尺寸小和次生壁形成时间跨度长等特点,造成了木射线的结构特征至今仍不清晰,大大阻碍了木射线结构与树木生长、木材材性间构效关系等研究。为此,系统归纳和讨论了木射线的微观构造、超微观构造与化学结构特征,探讨了木射线结构在树种、器官、生长轮水平以及细胞类型间的变化规律,总结了木射线结构对树木生长与木材的力学、干缩湿胀、传声、耐腐性与渗透能力等的影响规律,对比了木射线微观构造、超微观构造与化学结构的分析方法及适用范围,最后针对当前存在的问题与不足,展望了木射线结构研究的发展趋势。创新及完善木射线结构分析方法体系,开展木射线结构的理论研究,建成木材多级结构特征与构效关系数据平台,可为树木生长与功能、木材识别鉴定及高附加值利用等研究提供参考。
Wood rays,as an important component of radial xylem tissue in trees,are present in nearly all woody plant species.They play a crucial role in the radial and lateral transport of nutrients,water,and photosynthetic products during tree growth.Additionally,wood rays significantly affect the physical and mechanical properties of wood,as well as its processing and utilization.Till now,structural straits of wood rays have not been revealed clearly,because the low wood ray proportion,small cell sizes,and a long period of secondary wall formation make the study of wood rays complicated.Furthermore,problems in scientific understanding of wood ray structure characteristics also become obstacles and decelerate the progresses of scientific research about the influence of wood rays on tree growth,as well as wood ray structure-property relations.Hence,in this review,we endeavor to bridge this knowledge gap by providing a comprehensive overview of wood ray structural characteristics.We summarized the structural characteristics of wood rays at different levels,including microstructure,ultrastructure,and chemical structural characteristics.Then,the influences of species,cambial age,developmental stage,and contact with adjacent cells on the wood ray structure characteristics were discussed.Besides,we briefly reviewed the changes in wood ray structures at the levels of species,organs,growth rings and cell types.This multi-level analysis offers valuable insights into the adaptation of wood rays with different growth conditions and environmental factors.In addition,the impacts of wood ray structural characteristics on tree growth were revealed.Additionally,we also provided information about the influences of wood ray structural characteristics on wood physical and mechanical properties,for instance mechanical property,shrinkage and swelling,dimensional stability,acoustic performance,degradation resistance,and permeability.Moreover,the analysis methods and applicable scope for wood ray microstructure,ultrastructure,and chemical structural characteristics were introduced and compared.Finally,three prospects for future development of wood ray structure characteristics were proposed based on current problems and shortcomings.Firstly,it is essential to innovate and refine the analysis methodology for examining the structural characteristics of wood rays,which could promote the precise and comprehensive characterizations of wood ray structures.Secondly,theoretical research on wood ray structure was carried out.This research aimed at integrating insights from diverse disciplines,creating a unifying framework to better understanding the roles and functions of wood rays.Thirdly,a data platform was established to capture the multi-level structural characteristics of wood rays and the relationships between wood structure and properties.This platform provides a theoretical and scientific foundation for understanding tree growth and function,facilitating wood identification,and promoting the high-value utilization of wood.