长白山主要林分物种多度分布与性状分布的关系  

Relationship between species abundance distribution and trait distribution in main forest stand of Changbai Mountain,northeastern China

作　　者：李晓宇[1] 胡兵 秦江环 赵秀海[1] Li Xiaoyu;Hu Bing;Qin Jianghuan;Zhao Xiuhai(Research Center of Forest Management Engineering of National Forestry and Grassland Administration,Beijing Forestry University,Beijing 100083,China;Institute of Forest Resource Information Techniques,Chinese Academy of Forestry,Beijing 100091,China;Key Laboratory of Forest Management and Growth Modeling,National Forestry and Grassland Administration,Beijing 100091,China)

机构地区：[1]北京林业大学国家林业和草原局森林经营工程技术研究中心,北京100083 [2]中国林业科学研究院资源信息研究所,北京100091 [3]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

出　　处：《北京林业大学学报》2024年第8期47-56,共10页Journal of Beijing Forestry University

基　　金：国家重点研发计划重点专项(2022YFD2201003-01)。

摘　　要：【目的】探究长白山地区群落物种的多度分布格局及其驱动过程,以及多度分布与性状分布之间的关系,为当地森林经营与修复策略的制定提供理论依据。【方法】以长白山不同林分类型的3块5.2 hm2(次生山杨白桦林、次生针阔混交林、原始红松紫椴林)和1块5 hm2原始阔叶红松林固定监测样地为研究对象,通过采集样地内木本个体的6个关键功能性状(叶面积、比叶面积、叶片厚度、最大树高、叶片氮含量、叶片磷含量),分析样地的物种多度分布格局、功能性状分布格局以及二者之间的关系。【结果】不同林分类型中通过统计检验的模型种类各异,但所有最优模型均为统计模型。在性状分布格局中,最大树高、比叶面积和叶磷含量在4块样地均呈现正态分布。然而,功能性状分布格局转化得到的物种分布格局模型显示,尽管部分模型通过了统计检验,但与多度分布结果拟合度不高。【结论】在长白山地区,物种多样性的形成并非主要由随机过程驱动,而是受到竞争作用的显著影响,这决定了演替过程中群落物种组成的变化情况。虽然功能性状分布与物种多度分布之间存在一定的联系,但直接通过群落水平性状分布格局推断物种多度的方法尚不准确。[Objective]The study expored the species abundance distribution pattern and its driving process,as well as the relationship between species abundance distribution and trait distribution,so as to provide theoretical support for strategies formulation of local forest management and restoration strategies.[Method]The study objects were three forest plots of 5.2 ha(secondary Populus davidiana-Betula platyphylla mixed forest,secondary coniferous and broadleaved mixed forest,primary Pinus koraiensis-Tilia amurensis mixed forest)and one forest plot of 5 ha(primary broadleaved-Pinus koraiensis mixed forest).Six functional traits,including leaf area,specific leaf area,leaf thickness,max.tree height,leaf nitrogen concentration,and leaf phosphorus concentration,were measured to analyze the distribution patterns of species abundance and functional traits in the sample plot,as well as their relationship.[Result]Although the types of the models that had passed statistical tests varied in different stands,all optimal models were statistical models.In the distribution patterns of traits,the max.tree height,specific leaf area,and leaf phosphorus concentration of the 4 sample plots showed a normal distribution.However,the model of species distribution converted from the functional traits distribution showed that although some models had passed statistical tests,it could not fit the real species abundance distribution well.[Conclusion]Random process is not the main mechanism driving the formation of species diversity in Changbai Mountain.Instead,competition has a significant effect on species diversity,which determines the change of community species composition during forest succession.There is a correlation between functional trait distribution and species abundance distribution,but community-level trait distribution cannot be applied to infer species abundance distribution directly.

关 键 词：森林管理 物种多度分布 功能性状 生态模型 阔叶红松林 

分 类 号：S750[农业科学—森林经理学]