人工纯林和混交林中南酸枣木材解剖特性的比较分析  

Comparative analysis on wood anatomical characteristics of Choerospondias axillaris in artificial pure and mixed forests

作　　者：林金国[1] 陈慈禄 林秀芳 

机构地区：[1]福建农林大学材料工程学院,福建福州350002 [2]福建省顺昌县林业局,福建顺昌353200 [3]福建省林业调查规划院,福建福州350003

出　　处：《植物资源与环境学报》2009年第4期46-52,共7页Journal of Plant Resources and Environment

基　　金：福建省自然科学基金资助项目(B0110024);福建省高等学校新世纪优秀人才支持计划资助项目(J0608572)

摘　　要：对林龄为25a的南酸枣〔Choerospondias axillaris(Roxb.) Burttet Hill〕纯林、南酸枣-马尾松(Pinus massoniana Lamb.)混交林和南酸枣-杉木〔Cunninghamia lanceolata(Lamb.) Hook.〕混交林中南酸枣木材的解剖特性进行了比较分析。测定结果表明,在25a的树龄内,南酸枣-马尾松混交林、南酸枣-杉木混交林和南酸枣纯林中南酸枣木材纤维的长度分别为0.843～1.401、0.858～1.489和0.873～1.347mm,宽度分别为19.28～23.58、19.34～22.34和19.76～25.26μm,长宽比分别为39.70～62.04、39.20～63.96和40.60～59.34;随树龄的增加,纯林和混交林中南酸枣木材纤维的长度、宽度及长宽比均逐渐增加,且不同林分间的差异逐渐达到显著水平,并以南酸枣-杉木混交林中南酸枣木材纤维的长度和长宽比最大、宽度最小。3种林分中南酸枣木材的导管组织比量、纤维组织比量和木射线组织比量分别为16.1%～16.7%、64.7%～65.2%和12.9%～13.4%,以南酸枣-杉木混交林中南酸枣木材导管组织比量和纤维组织比量最大,但差异均不显著;仅纯林的木材轴向薄壁组织比量(5.8%)显著高于混交林(5.1%和5.2%)。随树龄的增加,3种林分中南酸枣木材微纤丝角均逐渐减小,南酸枣-马尾松混交林、南酸枣-杉木混交林和南酸枣纯林中南酸枣木材微纤丝角分别为23.33°～16.82°、23.20°～16.36°和23.34°～17.41°,且仅在树龄16～25a阶段,混交林中的南酸枣木材微纤丝角显著小于纯林,其中又以南酸枣-杉木混交林中的南酸枣木材微纤丝角最小。研究结果显示,南酸枣-杉木混交林中南酸枣木材的解剖特性总体上最优,在南酸枣木材品质定向培育过程中宜选择杉木作为伴生树种。Anatomical characteristics of Choerospondias axillaris （Roxb. ） Burtt et Hill wood within 25 a in C. axillaris pure forest,C. axillaris-Pinus massoniana Lamb. mixed forest and C. axillaris-Cunninghamia lanceolata （Lamb. ） Hook. mixed forest were comparatively analyzed. The determination results show that in 25 a tree age,the fiber length of C. axillaris wood in C. axillaris-P. massoniana mixed forest,C. axillaris-C. lanceolata mixed forest and C. axillaris pure forest is 0.843-1.401,0.858-1.489 and 0.873-1.347 mm,the fiber width 19.28-23.58,19.34-22.34 and 19.76-25.26 μm,the length/width ratio 39.70-62.04,39.20-63.96 and 40.60-59.34,respectively. As tree age increasing,the length,width and length/width ratio of C. axillaris wood fiber in pure and mixed forests increase gradually,and the difference among different forests reaches significant level gradually,and the length and length/width ratio of C. axillaris wood fiber are the highest and the width is the lowest in C. axillaris-C. lanceolata mixed forest. The proportions of vessel,fiber and wood ray of C. axillaris wood in three forests are 16.1%-16.7%,64.7%-65.2% and 12.9%-13.4%,respectively. The proportions of vessel and fiber of C. axillaris wood in C. axillaris-C. lanceolata mixed forest are the highest,but the difference is not significant. The axial parenchyma proportion of C. axillaris wood in pure forest （5.8%） is significantly higher than that in mixed forests （5.1% and 5.2%）. With tree age increasing,the microfibril angle of C. axillaris wood in three forests decreases gradually,and that in C. axillaris-P. massoniana mixed forest,C. axillaris-C. lanceolata mixed forest and C. axillaris pure forest is 23.33°-16.82°,23.20°-16.36° and 23.34°-17.41°,respectively. At tree age stage of 16-25 a,the microfibril angle of C. axillaris wood in mixed forests is lower than that in pure forest,and that in C. axillaris-C. lanceolata mixed forest is the lowest. It is suggested that in general,the anatomical characteristics of C. axillaris wood i

关 键 词：南酸枣 杉木 人工纯林 混交林 木材解剖特性 

分 类 号：S781.29[农业科学—木材科学与技术]