西南林业大学学报2018，Vol.38Issue(3)：44-50,7.DOI:10.11929/j.issn.2095-1914.2018.03.007
修枝对云南松林分结构及生长影响的分析
Analysis of Pruning Effecting on Stand Structure and Growth of Pinus yunnanensis
摘要
Abstract
In order to understand effects of pruning on changes of stand structure and growth,the L4(23) or-thogonal design was applied (two treatments of non- and heavy-pruning as two controls) to implement the experi-ment of pruning method and intensity for a 10-year-old Pinus yunnanensis plantation which planted as the uneven row spacing schema of the 1 m×2 m×5 m in Jianshan Forest Zone, Lufengchun Forest Center, Yiliang County;and stand trees were mensurated before and after been pruned for 2 years. The results showed that diameter grads of the stand were 2-14 and 2-16 cm with the 8,10 and 10,12 cm comprised of dominant stand components before and after pruning,respectively. Mean increasing percents of diameters at breast height(DBHs),tree heights,tim-ber volumes for four orthogonal-pruning treatment combination (TC) were 23.4%-28.7%, 28.6%-34.2%, 83.6%-100.3%,while which of the three parameters for non-pruning control were 21.9%,20.2%,68.9%,and foe severe-pruning control were 20.3%,21.4%,63.4%, respectively; The highest increasing percent of these 3 parameters was found out the TC of handsaw pruning with keeping three wheel branches, and the increasing per-cents of orthogonal-pruning TCs were higher than which of the non-and severe-pruning TCs. It was significantly im-proved juvenile stand growth of P.yunnanensis applied proper TCs of pruning method and intensity.关键词
云南松/修枝/林分结构/林木生长Key words
Pinus yunnanensis/pruning/stand structure/forest tree growth分类
农业科技引用本文复制引用
李杨涛,杨历雨,李卫冲,龚建斌,郑树宏,李莲芳,杨文君,凌莉芳,马敬,吴柏良,叶桂荣,吴俊多,沈松..修枝对云南松林分结构及生长影响的分析[J].西南林业大学学报,2018,38(3):44-50,7.基金项目
国家"十三五"重点研发计划(2017YFD0600504-1)资助. （2017YFD0600504-1）
