马尾松、木荷纯林及混交林的生长差异分析  

Analysis on growth differences between mixed plantations of Pinus massoniana and Schima superba and their pure plantation

作　　者：李方兴 张意苗 易伟东[3] 陈聪[3] 魏萧萧[3] 林世滔 李江[4] 

机构地区：[1]江西省林业科技推广总站,江西南昌330038 [2]宜丰县林业局,江西宜丰336300 [3]江西环境工程职业学院,江西赣州341000 [4]江西省林业科学院,江西南昌330013

出　　处：《南方林业科学》2016年第5期17-20,共4页South China Forestry Science

基　　金：江西省林业科技创新专项"黄樟种质资源收集与香料用优良无性系选育"(项目编号:201602)资助

摘　　要：对马尾松、木荷的纯林及混交林人工林的生长差异进行分析,结果表明:1)马尾松、木荷的纯林与混交林不同林分类型的生长量均存在显著差异,同一树种混交林比纯林的生长表现更好,表明混交林可促进林分的生长。2)不同林分类型的死枝下高、活枝下高和冠幅也均具有显著差异,混交林的自然整枝能力比纯林强。3)混交林的变异系数总体上比纯林大,混交林林分生物多样性丰富,诱导变异因素多,表明混交林存在更大的变异表现。4)树高、胸径、活枝下高等各性状指标之间存在显著相关关系,表明林分生长力强弱与自然整枝能力有关。Growth differences between mixed plantations of Pinus massoniana and Schima superba and their pure plantations were analyzed. The result showed that there were significant differences in growth differences between pure plantations of P.massoniana and S. superba and mixed plantations. Mixed plantation grew better than pure plantation for the same tree species, which showed that mixed plantations could promote growth. There were significant differences among dead branches height, living branches height and crown. The natural pruning ability of mixed plantations was stronger than pure plantations.The coefficient of variation of mixed plantations was bigger than pure plantations, which had rich biodiversity and induced variation factors. Therefore, there was a greater variation in mixed plantations. There were significantly correlated among tree height, DBH, living branches high, and other character index, which showed that stand growing force strength was relate to its natural pruning ability.

关 键 词：马尾松 木荷 纯林 混交林 

分 类 号：S791.248[农业科学—林木遗传育种] S725.2[农业科学—林学]