长白山国家级自然保护区云冷杉林天然更新特征及影响因素分析  

Analysis on Characteristics and Influencing Factors of Natural Regeneration of Spruce-fir Forest in Changbai Mountain National Nature Reserve

作　　者：毕海东[1] 刘剑[1] 张骁[1] 刘欣[1] 杨楠 高铭蔚 BI Haidong;LIU Jian;ZHANG Xiao;LIU Xin;YANG Nan;GAO Mingwei(Forest Survey and Design Institute of Jilin Province,Changchun 130022,China)

机构地区：[1]吉林省林业勘察设计研究院,吉林长春130022

出　　处：《吉林林业科技》2023年第2期28-31,共4页Journal of Jilin Forestry Science and Technology

摘　　要：本文通过对长白山国家级自然保护区4块云冷杉林样地(50 m×50 m)进行调查,统计了天然更新树种和株数,并分析了平均胸径和林分密度对天然更新的影响。结果表明:研究区域内云冷杉林更新树种19种,更新株数2650株·hm^(-2)。其中4种槭树种类更新数量最多,占更新总量的81.2%;紫椴和春榆次之,分别占更新总量的7.4%和3.1%。不同径级和密度级对云冷杉林天然更新影响较大,其中第Ⅳ径级(>20~24 cm)和第Ⅱ密度级(>400~800株·hm^(-2))林分更新株数最多,分别为3098株·hm^(-2)和3445株·hm^(-2)。In this paper,4 plots(50 m×50 m)of spruce-fir forest in Changbai Mountain National Nature Reserve were investigated.The species and number of natural regeneration trees were counted,and the effects of average DBH and stand density on natural regeneration were analyzed.The results showed that there were 19 species of regeneration trees in the study area,and the regeneration number was 2650 plants per hectare.Among them,the number of 4 kinds of Acer species was the highest,and that accounted for 81.2%of the total number.The numbers of Tilia amurensis and Ulmus davidiana var.japonica followed,and those accounted for 7.4%and 3.1%of the total number,respectively.Different diameter classes and density classes had the great effect on the natural regeneration of spruce-fir forest.Among them,the numbers of regeneration trees with diameter classⅣ(>20-24 cm)and density classⅡ(>400-800 plants per hectare)were the highest,and those were 3098 plants per hectare and 3445 plants per hectare,respectively.

关 键 词：云冷杉林 天然更新 影响因素 

分 类 号：S754.1[农业科学—森林经理学]