Study on Chemical Components and Properties of Radial Chinese Fir

• 出 处: Chinese Forestry Science and Technology
• 发表日期: 2007年03期
• 关键词: crystallinity cellulose lignin deviation radial variance Figure polymerization p

The variability of main chemical composition of radial Chinese fir was studied. Analysis of variance showed that variance was significant, especially for holocellulose and α-cellulose; the holocellulose content in heart wood was lower than that in sapwood; the lignin content decreased from Position 1 to Position 3, but increased gradually from Position 4 to Position 8; the α - cellulose content in heart wood was lower than that in sapwood; and the relative crystallinity was 59.97% in Position 1, 60.80% in Position 2, and about 42% in others.

The variability of main chemical composition of radial Chinese fir was studied. Analysis of variance showed that variance was significant, especially for holocellulose and α-cellulose; the holocellulose content in heart wood was lower than that in sapwood; the lignin content decreased from Position 1 to Position 3, but increased gradually from Position 4 to Position 8; the α - cellulose content in heart wood was lower than that in sapwood; and the relative crystallinity was 59.97% in Position 1, 60.80% in Position 2, and about 42% in others.