大花序桉和火力楠木材物理力学性质比较

2014年以福建省漳州市龙海九龙岭国有林场12年生的大花序桉(Eucalyptus cloeziana)人工林为研究对象,并以乡土树种23年生的火力楠(Michelia macclurei)人工林为对照,对大花序桉和火力楠木材的物理性质和力学性质进行比较测定.结果 表明,大花序桉、火力楠的木材气干密度分别为0.78、0...

Comparison on Wood Physical and Mechanical Properties of Eucalyptus cloeziana and Michelia macclurei

The wood physical and mechanical properties of 12 years Eucalyptus cloeziana and 23 years native species Michelia macclurei plantations of Jiulongling State Forest Farm in Longhai were determined in 2014 for stand management and application of wood.The results showed that the air-dried wood density of Eucalyptus cloeziana and Michelia macclurei were 0.78 g·cm^-3 and 0.58 g·cm^-3,respectively.The oven shrinkage rate in chord direction of Eucalyptus cloeziana and Michelia macclurei were 8.8%and 6.8%,respectively.The swelling properties after water absorption of Eucalyptus cloeziana and Michelia macclurei were 9.7%and 7.3%,respectively.The comprehensive strength of the wood of Eucalyptus cloeziana and Michelia macclurei were 203.7 MPa and 154.6 MPa,respectively.The wood density and comprehensive strength of Eucalyptus cloeziana are higher than that of Michelia macclurei,but it is slightly inferior to Michelia macclurei in terms of shrinkage rate and swelling properties.Compared with the main afforestation tree species in Fujian Province,Eucalyptus cloeziana and Michelia macclurei have higher scores of physical and mechanical than that of other tree species.Therefore,they have higher wood utilization value.