辽西丘陵山地樟子松人工林密度调控技术  

Density-Regulated Technology of Pinus sylvestris var. mongolica Plantation in Hilly Mountains in Western Liaoning Province

作　　者：李国军 

机构地区：[1]辽宁省建平县黑水机械化林场,辽宁建平122000

出　　处：《防护林科技》2017年第2期33-35,共3页Protection Forest Science and Technology

基　　金：国家林业公益性行业科研专项(201004063)

摘　　要：为探讨辽西丘陵山地樟子松人工林合理经营密度,选择1984年造林的中龄林,设置75株·hm^(-2),100株·hm^(-2),120株·hm^(-2)三个保留密度,对照为227株·hm^(-2),开展樟子松人工林密度调控技术试验。结果表明:不同密度对樟子松林分树高生长量的影响不大,不同密度对樟子松林分胸径生长量及林分蓄积生长量的影响达到显著水平;同时随着间伐强度的加大,林分中、大径阶立木株数比例呈上升趋势。通过林分密度的调整,可以实现提高林木的质量及目标材种所占比率,以期达到提高商品林经济效益的目的。In order to investigate the reasonable management density of Pinus sylvestris var.mongolicaplantation in hilly mountains in western Liaoning Province,choosing middle-aged forest planted in 1984,three reserved density（75,100,120tree·hm^-2）were arranged to conduct density-regulated technology for Pinus sylvestris var.mongolica plantation（the CK is 227tree·hm^-2）.Result shows that different density have little significant difference on tree growh of Pinus sylvestris var.mongolica;different density have extremely significant difference on diameter of DBH and volume.With the thinning intensity increased,middle and large diameter ratio of plantation increased.Therefore,through the regulation of the stand density,the quality of the trees and the proportion of the target wood can be improved,so as to achieve the goal of improving economic efficiency of commercial forest.

关 键 词：丘陵山地 密度调控 樟子松 辽西 

分 类 号：S791.253[农业科学—林木遗传育种]