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林业科学 ›› 2003, Vol. 39 ›› Issue (6): 115-121.doi: 10.11707/j.1001-7488.20030619

• 论文及研究报告 • 上一篇    下一篇

北京地区I-214杨树木材解剖特性与基本密度的株内变异及其预测模型

姜笑梅 殷亚方 浦上弘幸   

  1. 中国林业科学研究院木材工业研究所,北京100091;日本国际协力事业团,北京100091
  • 收稿日期:2002-04-08 修回日期:1900-01-01 出版日期:2003-11-25 发布日期:2003-11-25

VARIATION WITHIN TREE OF WOOD ANATOMICAL PROPERTIES AND BASIC DENSITY OF I-214 POPLAR IN BEIJING AREA AND THEIR RELATIONSHIP MODELLING EQUATIONS

Jiang Xiaomei,Yin Yafang,Hiroyuki Urakami   

  1. Research Institute of Wood Industry, CAF Beijing100091;Japan International Cooperation Agency Beijing100091
  • Received:2002-04-08 Revised:1900-01-01 Online:2003-11-25 Published:2003-11-25

摘要:

对北京地区I-214杨的纤维和导管分子长及宽度、纤维壁厚、组织比量、胞壁率与基本密度和生长轮宽度在株内不同高度上的变异模式及其之间的相关关系进行了全面的测定与分析。结果表明:纤维长、宽及壁厚,导管分子长、弦径和导管比量径向变异由髓心向外迅速递增,而后趋于平缓;而导管个数、纤维与射线比量、胞壁率的径向变异由髓心向外逐渐递减,再趋于稳定。不同高度间的解剖参数(胞壁率除外)差异不显著。基本密度的径向变化是髓心处较大,往外先略减而后快速递增,然后趋于平缓。木材幼龄期为10~12a,幼龄材比成熟材的基本密度低,纤维和导管分子均短与窄、壁薄,纤维和射线比量大、导管个数多、导管比量小,生长轮宽度窄,且两者间的基本密度、纤维和导管分子长度、导管弦径、导管和射线比量差异均达显著水平。生长速度对解剖性质影响不显著,但与木材基本密度呈显著负相关,解剖参数与基本密度关系密切。基本密度和各项解剖参数均与生长轮年龄为极显著相关,可建立模型预测。

关键词: 株内变异, I-214杨, 木材解剖特性, 基本密度, 相关关系模型

Abstract:

A comprehensive determination and deep analysis on the variation mode of fiber and vessel morphological parameters along tree (Populus×canadensis cv. “I-214") height, including length and width, fiber wall thickness, tissue ratio, fiber wall ratio, basic density, width of growth rings, and on the relationship among them were conducted. The present results indicated an initially rapid and then gentle increase of fiber length and width, fiber wall thickness, vessel length and tangential diameter and vessel ratio from pith to outward, while vessel numbers, tissue ratio of fibers and rays, fiber wall ratios gradually decreased and then tended to stable. The variation of all the anatomical parameters but cell wall ratio showed no significance along tree height. The radial variation mode of basic density was characterized with initially slight decrease followed immediately by a rapid and then much more gentle increase from pith to outward. The delimitation age between juvenile and mature wood was 10~12 years. Compared with mature wood, juvenile wood owned lower basic density, shorter and narrower fibers and vessels, thinner cell wall, higher fiber and ray ratio, more vessels, lower vessel ratio and narrower width of growth rings, and there was significant difference in basic density, fiber and vessel length and tangential diameter, tissue ratio of vessels and rays between juvenile and mature wood. Growth rate imposed no significant impact on anatomical properties, but showed significant negative correlation with the basic density of wood, which was in turn closely related to anatomical parameters. There existed highly significant correlation between the age of growth rings and basic density as well as all the anatomical parameters, so the predictive models could be established.

Key words: Variation within tree, Populus×, canadensis cv. &ldquo, I-214", Wood anatomical properties, Basic density, Correlation model