森林工程2017，Vol.33Issue(1)：7-11,5.
抚育间伐对云南松中幼林的影响
Effect of Thinning on Mid-young Pinus Yunnanensis Plantations
摘要
Abstract
Pinus Yunnanensis is one of the main timber species in Yunnan province.Stand quality and productivity are significantly influenced by the unreasonable stand structure,relative large density,trees competition and poor growth potential.Through 5 years investigation of tree diameter of breast height(DBH)and the height growth between 11 thinning and 4 untouched patches,it was showed that the total increment of tree DBH was 5.21 cm after thinning,which was significantly higher than that of untouched patches;the increasing range and speed would increase in follow time,but thinning measures had no significantly effect on tree height.The total annual individual volume increment and the total increment in five years with thinning increased 100% and 60% respectively than that untouched.On the whole,the thinning significantly increased the individual tree volume of young and middle aged Pinus Yunnanensis,but had no effect on plantations and hectare volumes.The tending years is key factor which significantly connected with trees DBH(F=29.049,P＜0.001),individual tree volume(F=29.049,P＜0.001)and plantations volume(F=29.049,P＜0.001)after thinning.关键词
云南松/抚育间伐/胸径/树高/蓄积Key words
Pinus yunnanensis/thinning/DBH/tree height/volume分类
农业科技引用本文复制引用
张育梅,及利,和春庭..抚育间伐对云南松中幼林的影响[J].森林工程,2017,33(1):7-11,5.基金项目
中央财政国家森林抚育补贴项目(2010) （2010）
