长白松立木相对干形初析  

Preliminary Study on Relative Stem Form of Pinus sylvestris var. sylvestriformis

作　　者：郝广明[1] 许忠学[2] 林喜双 张生[2] 李文学 王德胜[3] 李冬兰[3] 毛辉 

机构地区：[1]吉林林学院生产处 [2]吉林林学院实验林场 [3]汪清林业局

出　　处：《吉林林学院学报》1993年第3期67-70,共4页

摘　　要：木文通过对长白松(Pinus sylvestris var. sylvestriformis)立木相对干形的初步分析,认为长白松的相对干形具有一定的稳定性。起源不同并未引起干形变异,同一林分内不同立木的相对干形基本上是一致的。通过计算得出长白松立木各相对高度处直径经验公式模型。The relative stem form of Pinus sylvestris var. sylvestriformis was analysed preliminarily. The results showed that the relative stem form of the tree species posseses some unanimity. The trees originated from different sources have no significant differenee in stem forms,and the trees in the same stand are unanimous in relative stem forms. Finally, a model was given out to calculate diameters in different relative heights.

关 键 词：长白松 相对干形 稳定性 

分 类 号：S791.259[农业科学—林木遗传育种]