不同间伐强度对水曲柳天然次生林生长 动态及乔木层结构的影响  

Effects of Different Thinning Intensities on Growth Dynamics and Tree Layer Structure of Natural Secondary Forest of Fraxinus mandshurica

作　　者：吕伟伟[1] 刘刚[1] 陈晓波[1] 王丽丽[1] 孙勇[1] LV Weiwei(Forestry Science Research Institute of Jilin City,Jilin Jilin132013)

机构地区：[1]吉林市林业科学研究院,吉林吉林132013

出　　处：《林业科技》2022年第1期30-34,共5页Forestry Science & Technology

基　　金：中央财政林业科技推广示范项目(JLT2019-30号)。

摘　　要：以水曲柳天然次生林为研究对象,以培育大径材为目标,采用典型取样法,研究不同强度间伐对水曲柳天然次生林的生长变化及乔木层组成结构的影响。结果表明:不同间伐强度对水曲柳胸径生长及材积生长差异显著,以弱度和强度间伐的天然次生林分中水曲柳中大径级林木较多,以中度间伐胸径生长率最大;不同间伐强度水曲柳天然林中,林木径级分布以强度间伐的中大径级的林木分布较多;三种间伐强度,间伐前后对乔木层组成结构的影响甚小,对重要值影响较大。综合分析以强度间伐天然次生林培育水曲柳大径材效果最好。Taking the natural secondary forest of Fraxinus mandshurica as the research object,the cultivation of big diameter timber as the goal,the effects of different thinning intensities on the growth of the natural secondary forest of Fraxinus mandshurica were studied by the typical sampling method,.The results showed that different thinning intensities had significant effects on the DBH growth and volume growth of Fraxinus mandshurica,and there were more trees of medium and large diameter class in the natural secondary forest of Fraxinus mandshurica with weak and strong thinning,and the growth rate of DBH with moderate thinning was the biggest The tree diameter class distribution of Fraxinus mandshurica natural forest with different thinning intensities was more than that of middle and large diameter class forest with different thinning intensities,and the three thinning intensities had little influence on the tree layer composition and structure,but great influence on the important value.Comprehensive analysis of intensity thinning natural secondary forest to cultivate Fraxinus mandshurica large-diameter timber was the best.

关 键 词：水曲柳 天然林 抚育间伐 径级结构 乔木层结构 

分 类 号：S792.41[农业科学—林木遗传育种]