学术论文

      浙江桂幼龄材的生长特性及主要材性

      Growth characteristics and wood properties of juvenile wood of Cinnamomum chekiangense

      摘要:
      以3株6年生浙江桂幼龄材为试材,研究了其生物量、材积、基本物理力学性能及生长轮的宽度、纤维长度、宽度、微纤丝角和结晶度的径向变异规律。结果表明,浙江桂幼龄材单株平均总生物量27.93 kg,平均材积0.0124 m3,生长轮平均宽度9.15 mm(3.12~10.57 mm),基本密度为0.414 g/ cm3,除髓心外其余各生长轮宽度和密度无明显差异,反映浙江桂生长较为稳定;顺纹抗压强度、抗弯强度和弹性模量等物理力学综合性能中上等;纤维长度为830.6μm(581~1043μm),纤维宽度为23.6μm(21~24μm),结晶度为38.46%~58.43%,微纤丝角为13.6°~24.6°;纤维长度、宽度和结晶度自髓心向外逐渐增加,微纤丝角自髓心向外逐渐减小,结晶度与纤维长度、宽度间相关性极显著。
      Abstract:
      Three 6-year-old Cinnamomum chekiangense trees were selected to study the growth characteristics(biomass and wood volume)and radial variation of wood properties(basic physical and mechanical properties,annual ring width,fibre length(FL),fibre width(FW),microfibril angle(MFA)and crystallinity( CR)). The results showed that the average biomass,volume,annual ring width and basic density were 27. 93 kg,0. 0124 m3 ,9. 15 mm(3. 12 -10. 57 mm)and 0. 414 g/ cm3 ,respectively. No significant variation of ring width and basic density along the radial direction was presented except the pith. The FL,FW,CR and MFA were 830. 6 μm(581-1043μm),23. 6 μm(21-24μm),38. 46% -58. 43%and 13. 6° -24. 6°,respectively. The FL,FW and CR increased from pith to bark while MFA decreased in the same direction. The CR was significantly correlated with FL and FW.
      作者: 王丰 [1] 潘彪 [1] 蒋亚萍 [2] 连彩萍 [1] 唐菁 [1] 殷云龙 [3]
      Author: WANG Feng [1] PAN Biao [1] JIANG Yaping [2] LIAN Caiping [1] TANG Jing [1] YIN Yunlong [3]
      作者单位: 南京林业大学材料科学与工程学院,南京,210037 南京林业大学材料科学与工程学院,南京 210037; 南通华美木材检验鉴定有限公司 江苏省中国科学院植物研究所
      刊 名: 林业科技开发 ISTIC
      年,卷(期): 2014, (5)
      机标分类号: S79 S78
      在线出版日期: 2014年11月3日
      基金项目: 2011年林业三新工程项目“常绿阔叶耐寒树种---天竺桂、大别山冬青的示范推广”(编号lysx[2011]13)。