祁门浙江楠天然林树种组成与空间结构特征分析  

Tree Species Composition and Spatial Structure Characteristics of Natural Phoebe chekiangensis Forest in Qimen County

作　　者：陈黎[1] 秦浩龙 刘成功 房震 潘健[1] 尹琛琛 万志兵[1] CHEN Li;QIN Haolong;LIU Chenggong;FANG Zhen;PAN Jian;YIN Chenchen;WAN Zhibing(College of Life and Environment Sciences,Huangshan University,Huangshan 245041,China;College of Forestry,Nanjing Forestry University,Nanjing 210037,China;Research Institute of Forestry Chinese Academy of Forestry,Beijing 100091,China;Chanwan Forest Industry Quarry in Anhui Qimen,Huangshan 2456002,China)

机构地区：[1]黄山学院生命与环境科学学院,安徽黄山245041 [2]南京林业大学林学院,南京210037 [3]中国林业科学研究院林业研究所,北京100091 [4]安徽省祁门县查湾森工采育场,安徽黄山245600

出　　处：《鲁东大学学报（自然科学版）》2023年第2期183-192,共10页Journal of Ludong University:Natural Science Edition

基　　金：安徽省林业科技创新项目(AHLYCX-2019-28);安徽省教育厅自然科学重点项目(KJ2020A0691);安徽省林业科技创新项目(AHLYCX-2022-16);安徽省教育厅项目(SKHS2020B07);安徽省大学生创新创业项目(S202110375094)。

摘　　要：以安徽省祁门县浙江楠(Phoebe chekiangensis)天然林为研究对象,探究其树种组成及空间结构特征,为该地区浙江楠的林分结构优化和保护提供理论依据。设置10个20 m×25 m的调查样地,进行每木检尺调查,基于树种组成、林分直径结构及角尺度、混交度、大小比数等林分空间结构参数进行分析研究。结果表明:浙江楠天然林的径级(≥5 cm)分布主要表现为近似正态分布;浙江楠是优势种,苦槠、枫香、香樟为亚优势种,与其他乔木共同构成了以浙江楠为主的群落;浙江楠天然林林分以中度混交(0.45)为主,处于中庸生长状态,林分内个体大小分化严重,存在较强的种间竞争。优势种浙江楠空间隔离差,面临激烈的种内竞争;浙江楠种群中处于随机分布格局的个体数占48%;平均大小比数为0.43。祁门县浙江楠种群状态相对稳定,更新良好,实践中可依据以上结果和各树种现状,采取择伐、补植等人为干扰措施,优化其种群组成及空间结构,促使群落更新演替成顶级群落。The natural Phoebe chekiangensis forest in Qimen County,Anhui Province being taken as the research object,this study aims to analyze the spatial distribution pattern and tree species composition,so as to provide theoretical basis for the optimization and adjustment of stand space structure.Ten survey plots with each area of 20 m×25 m were set up and measured per wood.The spatial structure indexes-uniform angle index(W),mingling(M)and dominance(U),tree species composition and diameter(DBH),were analyzed.The results indicated that the main distribution type of natural P.chekiangensis forest were approximately normal distribution curve.P.chekiangensis,as dominant species,and Castanopsis sclerophylla,Liquidambar formosana,and Cinnamomum camphor as subdominant species,together with other arbor species formed the community mainly composed of P.chekiangensis;The natural stand of P.chekiangensis was mainly medium mingling(0.45),and was in a state of moderate growth;The differentiation of individual size was serious in the stand,and there was strong interspecific competition;The dominant species of P.chekiangensis had poor spatial isolation and faced intense intraspecific competition.The number of individuals in the random distribution pattern accounted for 48%;The average size ratio was 0.43.The population status of P.chekiangensis in Qimen County was relatively stable and the regeneration was good;In practice,according to the above results and the status of each tree species,the population composition and spatial structure of P.chekiangensis could be optimized by human interference measures such as selective cutting and replanting,so as to promote the regeneration and succession of the community into the top community.

关 键 词：浙江楠 天然林 林分组成 空间结构 祁门县 

分 类 号：S718.54[农业科学—林学]