典型中亚热带天然阔叶林各林层林木高径比分布规律  

Distribution Law of Tree Height-to-Diameter Ratio in Each Stratum of Typical Natural Broad-Leaved Forest in Mid-Subtropical Zone

作　　者：严铭海 王金池 黄清麟[1,2] 庄崇洋 郑群瑞[4] 卓鸣秀 官晓辉 Yan Minghai;Wang Jinchi;Huang Qinglin;Zhuang Chongyang;Zheng Qunrui;Zhuo Mingxiu;Guan Xiaohui(Research Institute of Forest Resource Information Techniques,CAF,Beijing 100091;Key Laboratory of Forest Management and Growth Modeling,National Forestry and Grassland Administration,Beijing 100091;Forestry College of Fujian Agriculture and Forestry University,Fuzhou 350002;Administrative Office of Jian’ou Wanmulin Provincial Nature Reserve,Jian’ou 353105)

机构地区：[1]中国林业科学研究院资源信息研究所,北京100091 [2]国家林业和草原局森林经营与生长模拟重点实验室,北京100091 [3]福建农林大学林学院,福州350002 [4]建瓯万木林省级自然保护区管理处,建瓯353105

出　　处：《林业科学》2023年第4期149-156,共8页Scientia Silvae Sinicae

基　　金：海南国家公园研究院科研项目(KY-22ZK03);中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金重点项目(CAFYBB2017ZC002)。

摘　　要：【目的】揭示典型中亚热带天然阔林各林层(包括全林和各亚层)林木高径比分布规律,为中亚热带人工阔叶林、半天然林和天然阔叶林可持续经营提供阔叶林木高径比方面的典型参照。【方法】以建瓯万木林省级自然保护区为研究区,在研究区内5个典型中亚热带天然阔叶林中分别设置50 m×50 m样地,计算典型林分各林层林木高径比平均值和标准差分析其随亚层的变化情况,运用Mann-Whitney U检验分析各亚层之间(包括第Ⅰ亚层、第Ⅱ亚层和第Ⅲ亚层间以及受光层和非受光层间)林木高径比平均值的差异显著性,利用偏度和峰度描述各林层林木高径比分布的偏离程度和离散程度,选择正态分布、Weibull分布函数对各样地各林层林木高径比分布进行拟合,并采用χ^(2)检验法检验拟合效果。【结果】综合5块样地林木高径比平均值,全林为103.1,各亚层平均值随亚层高度升高而减小,排序为第Ⅲ亚层(112.7)>第Ⅱ亚层(89.0)>第Ⅰ亚层(66.9)以及非受光层(112.7)>受光层(78.3);除4号样地第Ⅱ亚层与第Ⅲ亚层间林木高径比平均值为显著差异外,其他样地内各亚层间林木高径比平均值均为极显著差异。偏度结果表明,各林层林木高径比分布为右偏。峰度结果表明,全林、第Ⅰ亚层林木高径比分布相对较为分散;第Ⅱ亚层、第Ⅲ亚层、受光层林木高径比分布相对较为集中。运用正态分布函数拟合各林层林木高径比分布,其结果均通过卡方检验;而运用Weibull分布函数拟合较多未通过卡方检验。【结论】典型中亚热带天然阔叶林各亚层林木高径比平均值间均有极显著差异,且各亚层林木高径比平均值随亚层高度升高而减小;各林层林木高径比分布均为右偏,全林与第Ⅰ亚层林木高径比分布相对较为分散,第Ⅱ亚层与第Ⅲ亚层以及受光层林木高径比分布相对较为集中;正态分布函数对各林层林木高【Objective】To reveal the distribution law of tree height-to-diameter ratio in each stratum of typical natural broad-leaved forest in mid-subtropical zone,to provide a typical reference in the aspect of height-to-diameter ratio of broad-leaved trees for the sustainable management of artificial broad-leaved forest,semi-natural broad-leaved forest and natural broad-leaved forest in mid-subtropical zone.【Method】In Jian’ou Wanmulin provincial nature reserve,50 m×50 m plots were set up in 5 typical natural broad-leaved forest in mid-subtropical zonerespectively.Themean tree height-to-diameter ratio and standard deviation of each stratum in the typical stand was calculated to analyze its changes with the stratum,and the Mann-Whitney U test was used to analyze the significance test of the difference between the average height-to-diameter ratio in each stratum.Skewness and kurtosis are used to describe the degree of deviation and dispersion of the height-to-diameter ratio distribution.The normal distribution and Weibull distribution function were selected to fit the distribution of the height-to-diameter ratio of each stratum in each plots,and the fitting effect was tested byχ^(2) test.【Result】The mean tree height-to-diameter ratio in 5 sample plots was integrated,the mean tree height-to-diameter ratio of the whole stand was 103.1,and the mean tree height-to-diameter ratio of each stratum decreased with the increase of the stratum height.The order and value were as follows:the stratumⅢ(112.7)>the stratumⅡ(89.0)>stratumⅠ(66.9)and NLRS(112.7)>LRS(78.3).The mean tree height-to-diameter ratio between the stratumⅡand stratumⅢin plot 4 was significantly different,and the average height to diameter ratio of trees between stratum in other plots was extremely significant.The results of skewness showed that the tree height-to-diameter ratio of each stratum was skewed to the right.The variation of skewness of the tree height-to-diameter ratio in each stratum was irregular.The normal distribution function wa

关 键 词：中亚热带 典型天然阔叶林 分层 林木高径比分布 变化规律 

分 类 号：S757[农业科学—森林经理学]