期刊论文

Diameter Distribution and Succession Tendency of Coniferous Oak Mixed Forest in Hunan Province

中文

西北林学院学报

1001-7461

2019

34

5

172-178

10.3969/j.issn.1001-7461.2019.05.27

湖南省林业厅科技计划项目(2019) 湖南省林业厅推广项目 湖南省种苗中心项目 国家林业公益性行业科研专项(201504301)。

本校为第一机构

为揭示湖南省针栎混交林林分结构,了解林分树种更替过程以及指导针栎混交林抚育间伐奠定理论基础,以湖南省5块针栎混交林样地为研究对象,采用偏度和峰度描述栎类林分的直径分布特征,利用正态分布、Weibull分布、Gamma分布以及Logistic分布函数分别对针栎全林分和栎类林分的直径分布进行拟合,同时以林分株数变化动态为依据,分析针栎混交林的演替动向。结果表明:1)5个样地的偏度系数>0,说明栎类直径分布曲线为左偏,林分中中小径阶的栎类林木所占比重较大。除5号样地在2004年的峰度0,表明栎类直径分布相对比较集中,呈现尖峰态;2)Weibull分布函数和Gamma分布函数更适于拟合针栎全林分和栎类林分的直...

The objectives of this study were to provide the theoretical basis for revealing the forest structure,understanding the replacement process of the tree species and guiding the improvement cutting.Based on the five conifer and oak sample plots in Hunan Province,the skewness and kurtosis were used to describe the diameter distribution characteristics of oak forest,functions,including the normal distribution,Weibull distribution,Gamma distribution,and Logistic distribution were adopted to fit the diameter distribution of conifer-oak forest and pure oak forest.Meanwhile,the succession tendency of ...