[1]孙明港,王新杰*. 长白山地区白桦红松混交林结构特征分析[J].西北林学院学报,2021,36(5):18-27.[doi:10.3969/j.issn.1001-7461.2021.05.03]
　SUN Ming-gang,WANG Xin-jie*. Structure Characteristics of Mixed Forest of Betula platyphylla and Pinus koraiensis in Changbai Mountains[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2021,36(5):18-27.[doi:10.3969/j.issn.1001-7461.2021.05.03]
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 长白山地区白桦红松混交林结构特征分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第36卷
期数:
2021年第5期
页码:
18-27
栏目:
出版日期:
2021-09-30

文章信息/Info

Title:
 Structure Characteristics of Mixed Forest of Betula platyphylla and Pinus koraiensis in Changbai Mountains
文章编号:
1001-7461(2021)05-0018-10
作者:
 孙明港; 王新杰*
 （北京林业大学 林学院，北京 100083）
Author(s):
 SUN Ming-gang; WANG Xin-jie*
 (College of Forestry,Beijing Forestry University,Beijing 100083,China)
关键词:
 ; 林分结构; 树种组成; 直径结构; 四元分布
Keywords:
 ; stand structure;  tree species composition;  diameter structure;  quadrivariate distribution
分类号:
S718.542
DOI:
10.3969/j.issn.1001-7461.2021.05.03
文献标志码:
A
摘要:
 以长白山地区白桦红松混交林为对象，对林分结构特征进行研究，为森林结构调整优化提供参考。于金沟岭林场设立一块100 m×100 m的白桦红松混交林标准地，对样地内的整个林分以及白桦、红松直径结构运用负指数函数、三参数Weibull函数进行拟合，对于空间结构特征，采用混交度、角尺度、大小比、密集度4个结构参数进行描述。结果表明：1）林分中树种种类较多，直径大部分分布在6~12 cm径阶，大径材林木较少。2）对直径进行拟合时，三参数Weibull函数对红松和整体林分的直径拟合效果较好，负指数函数对白桦直径拟合较好。3）零元分布和一元分布中，白桦红松混交林中大多林木处于随机分布状态，中等程度混交，树冠较为密集，各个优势等级上林木数量分布均匀。从林分结构多元分布来看，无论参数如何组合，混交林各树种均表现出不同结构组合下大多数林木树冠分布密集或林木随机分布的格局。多元分布能够直观地描述各个树种多个结构参数组合的频率分布，为森林可持续经营、科学管理提供重要的参考信息。
Abstract:
 Precise description and analysis of forest structure can provide a theoretical basis for the formulation of forest management plans.The mixed forest of Betula platyphylla and Pinus koraiensis occurring in the Changbai Mountains area was taken as the research object,the structure characteristics of the forest stand were examined to provide a reference for forest structure adjustment and optimization.A 100 m×100 m standard plot of B.platyphylla and P.koraiensis mixed stand was established in Jingouling Forest Farm,and the diameter structures of the entire stand,as well as B.platyphylla and P.koraiensis in the sample plot were fitted with negative exponential function and three-parameter Weibull function.The spatial structure characteristics were described by using four structural parameters:mingling degree,uniform angle index,neighborhood comparison and crowding degree.1) There were many tree species in the stand,most of which were in 6 to 12 cm diameter class,and there were few large-diameter timber trees.2) When fitting the diameter,satisfactory results were achieved when Weibull function with three parameters was used to fit the diameter of P.koraiensis and the overall stand,while the negative exponential function was found to be suitable to fit the diameter of the B.platyphylla.3) In zero-variate distribution and the univariate distribution,most trees in the mixed forests were in random distribution,moderate mixing degree,and dense canopy.The number of trees was evenly distributed on each dominant level.From the perspective of the multivariate distribution of the stand structure,no matter how the parameters were combined,each tree species in the mixed forest showed a pattern of densely distributed tree crowns or random distribution of forest trees under different structural combinations.The multivariate distribution can intuitively describe the frequency distribution of multiple structural parameter combinations of various tree species,which can provide important reference information for sustainable forest management and scientific management.

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备注/Memo

备注/Memo:
 收稿日期：2020-10-09修回日期：2020-11-09
基金项目：国家重点研发项目:东北天然次生林抚育更新技术研究与示范（2017YFC050410101）。
作者简介：孙明港。研究方向：森林可持续经营。E-mail:2441415544@qq.com
*通信作者：王新杰，博士，教授，硕士生导师。研究方向：森林生长收获预估。E-mail:xinjiew@bjfu.edu.cn
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