作 者：
杨建飞;宁莉萍;杨了;王天石;陈甜甜;钱钰滢
单 位：
木材工业与家具工程高校重点实验室四川农业大学;四川农业大学林学院
摘 要：
【目的】研究黑壳楠(Lindera megaphylla Hemsl.)生长量及木材解剖特征径向变异规律。【方法】以百年古树黑壳楠活立木为研究对象,通过对木芯样的测定,分析其生长量和木材解剖特征径向变异规律。【结果】黑壳楠的径向连年生长量在生长初期增长迅速,生长峰值出现在第12年;平均生长量在第1~19年增幅较大,随后仍保持着较快的生长速度;但生长率总体呈下降趋势,生长初期下降幅度最大,从第12年开始下降幅度变小。各解剖特征参数变异大多在30~60 a间出现较大波动。在P=0.01水平上,木纤维长度与纤维宽度、导管宽度与木射线宽度、木纤维长宽比与木射线高度呈显著正相关;木纤维长度与管孔个数、木纤维宽度与管孔个数、木纤维壁腔比与木纤维腔径比、导管宽度与管孔个数呈显著负相关。在P=0.05水平上,生长量与木纤维壁腔比、生长量与木射线高度、木纤维长度与导管宽度、木纤维长度与导管长度、木纤维宽度与导管宽度、导管长度与导管宽度、管孔个数与木射线宽度呈显著正相关;生长量与导管宽度、生长量与木射线宽度、导管长度与管孔个数呈显著负相关。【结论】年均气温是影响黑壳楠径向生长量的关键因子。黑壳楠木纤维、导管、木射线解剖特征参数都随树龄的变化而变化,较大的波动现象与当地突发气候变化有关。
译 名：
Variation in radial increment of Lindera megaphylla and its wood anatomical characteristics
作 者：
YANG Jianfei;NING Liping;YANG Liao;WANG Tianshi;CHEN Tiantian;QIAN Yuying;College of Forestry,Sichuan Agricultural University;Key Laboratory of Wood Industry and Furniture Engineering,Sichuan Agricultural University;
关键词：
Lindera megaphylla Hemsl.;;radial increment;;anatomical character;;radial variation
摘 要：
【Objective】The radial variation pattern of increment and wood anatomical characters of Lindera megaphylla was studied.【Method】A century-old Lindera megaphylla in the Sichuan Province,was treated as the main research subject.By the empirical measurement of wood core samples,variation in radial pattern of increment and wood anatomical characters of Lindera megaphylla was explored.【Result】The annual radial growth of Lindera megaphylla increased rapidly at the early growth stage and the growth peak appeared in the twelfth year.The average increment of Lindera megaphylla from the first to the nineteenth year was large.Thereafter,Lindera megaphylla still maintained a relatively fast growth rate.However,the growth rate generally declined,and the initial growth rate decreased greatly,and the growth rate decreased from twelfth years.Most variations in characteristic parameters appeared to fluctuate in a large range between the30 th and the 60 th year.At the 0.01 probability level,there are significant positive correlation between wood fiber length and wood fiber width,vessel width and ray width,the ratio of wood fiber length to width and ray height.However,there was significant negative correlation between wood fiber length and pores number per square millimeter,wood fiber width and pores number per square millimeter,the ratio of fiber wall thickness to fiber lumen diameter and the ratio of fiber lumen to total diameter,vessel width and pores number per square millimeter.At the 0.05 probability level,there are significant positive correlation between growth and the ratio of wood fiber wall thickness to wood fiber lumen diameter,growth and ray height,wood fiber length and vessel width and ray width,wood fiber length and vessel length,wood fiber width and vessel width,vessel length and vessel width,pores number per square millimeter and wood ray width.However,there was significant negative correlation between growth and vessels width,growth and wood ray width,vessel length and pores number per square millimeter.【Conclusion】The average annual temperature was a key factor affecting the radial increment of Lindera megaphylla.The parameters of wood fiber,vessel,wood ray and other anatomical characteristics varied with the age in Lindera megaphylla.The large range of fluctuation was related to local abrupt climate change.
