南京林业大学学报(自然科学版)
南京林業大學學報(自然科學版)
남경임업대학학보(자연과학판)
JOURNAL OF NANJING FORESTRY UNIVERSITY(NATURAL SCIENCE EDITION)
2014年
5期
149-152
,共4页
国增超%侯静%郭炜%尹佟明%陈赢男
國增超%侯靜%郭煒%尹佟明%陳贏男
국증초%후정%곽위%윤동명%진영남
簸箕柳%木材基本密度%纤维素%半纤维素%木质素%纵向变异
簸箕柳%木材基本密度%纖維素%半纖維素%木質素%縱嚮變異
파기류%목재기본밀도%섬유소%반섬유소%목질소%종향변이
Salix suchowensis%wood basic density%cellulose%hemicellulose%lignin%longitude variation
以簸箕柳为对象,对其木材基本密度,木材纤维素、半纤维素及木质素含量在树干不同高度上的变化趋势进行了研究。结果表明:6株样本木材的基本密度为0?3312~0?3854 g/cm3,且在个体内都呈现随着树干高度的增加逐渐降低的趋势;样本木材的纤维素、木质素及半纤维素含量的变化范围分别为48?69%~56?89%、12?58%~16?42%、19?83%~23?76%,纤维素含量及半纤维素含量在不同个体内由根部到梢部均逐渐降低,木质素含量则表现出两头高、中间低的趋势,并且最高值出现在梢部。方差分析表明,尽管不同个体间木材化学成分含量和基本密度都存在显著差异(达1%极显著性水平),但这些性状在不同植株内沿树干高度的变异均未达显著水平。
以簸箕柳為對象,對其木材基本密度,木材纖維素、半纖維素及木質素含量在樹榦不同高度上的變化趨勢進行瞭研究。結果錶明:6株樣本木材的基本密度為0?3312~0?3854 g/cm3,且在箇體內都呈現隨著樹榦高度的增加逐漸降低的趨勢;樣本木材的纖維素、木質素及半纖維素含量的變化範圍分彆為48?69%~56?89%、12?58%~16?42%、19?83%~23?76%,纖維素含量及半纖維素含量在不同箇體內由根部到梢部均逐漸降低,木質素含量則錶現齣兩頭高、中間低的趨勢,併且最高值齣現在梢部。方差分析錶明,儘管不同箇體間木材化學成分含量和基本密度都存在顯著差異(達1%極顯著性水平),但這些性狀在不同植株內沿樹榦高度的變異均未達顯著水平。
이파기류위대상,대기목재기본밀도,목재섬유소、반섬유소급목질소함량재수간불동고도상적변화추세진행료연구。결과표명:6주양본목재적기본밀도위0?3312~0?3854 g/cm3,차재개체내도정현수착수간고도적증가축점강저적추세;양본목재적섬유소、목질소급반섬유소함량적변화범위분별위48?69%~56?89%、12?58%~16?42%、19?83%~23?76%,섬유소함량급반섬유소함량재불동개체내유근부도소부균축점강저,목질소함량칙표현출량두고、중간저적추세,병차최고치출현재소부。방차분석표명,진관불동개체간목재화학성분함량화기본밀도도존재현저차이(체1%겁현저성수평),단저사성상재불동식주내연수간고도적변이균미체현저수평。
The intra-individual variations of the basic density and the contents of main wood chemical compounds, inclu-ding cellulose, hemicellulose and lignin, along stems of S. suchowensis were measured in this study. Statistical analyses revealed that the basic density and the main wood compounds along the stem varied as following:the wood basic density decreased from stem base to stem top, in range of 0.331 2-0.385 4 g/cm3 for the measured samples. The contents of cel-lulose, lignin and hemicellulose were in ranges of 48.69%-56.89%,12.58%-16.42%,19.83%-23.76%, respectively, for the measured samples. Contents of cellulose and hemicellulose were found to decrease from stem base to stem top in all the measured samples. By contrast, lignin content exhibited a different variation trendency. For all measured samples, the lowest content appeared in the middle of the stem, and it increased towards both ends, with the highest lignin content appeared at the top of the stem. However, ANOVA statistics indicated that the basic density and the main wood chemical compounds varied insignificantly along the stems within individuals, while they varied significantly among different indi-viduals.