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黑壳楠生长量及木材解剖特征的径向变异(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2018年01期
Page:
181-187
Column:
研究简报
publishdate:
2018-01-31

Article Info:/Info

Title:
Variation in radial increment of Lindera megaphylla and its wood anatomical characteristics
Article ID:
1000-2006(2018)01-0181-07
Author(s):
YANG Jianfei1 NING Liping12* YANG Liao1 WANG Tianshi1 CHEN Tiantian1 QIAN Yuying1
1.College of Forestry, Sichuan Agricultural University, Chengdu 611134, China; 2. Key Laboratory of Wood Industry and Furniture Engineering, Sichuan Agricultural University, Chengdu 611134, China
Keywords:
Keywords:Lindera megaphylla Hemsl. radial increment anatomical character radial variation
Classification number :
S718. 47; S781.1
DOI:
10.3969/j.issn.1000-2006.201704013
Document Code:
A
Abstract:
【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 the 30th and the 60th 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.

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Last Update: 2018-03-30