辽东山区红松人工林不同密度管理培育大径材效果分析  

Effects of different densities (thinning) on breeding large-diameter-timber of Korean pine artificial forest in mountainous areas of eastern Liaoning

作　　者：姚博 YAO Bo(Liaoning Institute of ForestManagement,Dandong 118002,China)

机构地区：[1]辽宁省森林经营研究所,辽宁丹东118002

出　　处：《辽宁林业科技》2018年第5期1-4,共4页Liaoning Forestry Science and Technology

基　　金：国家重点研发计划项目(2017YFD0600601)

摘　　要：以辽宁省森林经营研究所68年生的红松人工林为研究对象,分析不同密度管理(间伐)对林分生长及大径材出材量的影响。结果表明:间伐调整密度能有效促进红松人工林平均胸径、树高、单株材积的生长,缩短大径木的培育年限。但间伐强度过大林分株数减少,降低了林分活立木总蓄积量及大径材出材量,中度间伐红松人工林的大径材出材量最大(243.79 m3·hm-2),其次是强度间伐和弱度间伐,但均高于对照。综合考虑,红松人工林大径材培育以中度间伐效果最佳,68年生适宜保留密度为310株·hm-2。The study was carried out in 68-year-old Korean pine artificial forest of Liaoning Institute of Forest Management and the effects of different density management(thinning)on stand growth and amount of large diameter timber were researched.The results showed that thinning could effectively promote the growth of DBH(diameter at breast height),tree height and individual timber accumulation of Korean pine artificial forest and shorten the breeding time of large diameter timber.But excessive thinning intensity reduced the tree numbers,the stand volume and the amount of big diameter timber.The amount of big diameter timber in moderate thinning forest was the largest(243.79 m3/hm2),followed by in strong thinning and weak thinning,but were all higher than that of control.Considering comprehensively,moderate thinning was the best to breeding large diameter timber and the retention of 310 individual/hm2 in 68-year-old Korean pine was suitable.

关 键 词：红松 密度管理 大径材 出材量 

分 类 号：S753.75[农业科学—森林经理学]