Information Entropy Measures for Stand Structural Diversity: Joint Entropy

编号 zgly0000341405

文献类型 期刊论文

文献题名 Information Entropy Measures for Stand Structural Diversity: Joint Entropy

学科分类 220.2510;森林测计学

作者 LeiXiangdong  LuYuanchang 

作者单位 InstituteofForestResourceInformationTechniques  ChineseAcademyofForestry  Beijing100091  P.R.China 

母体文献 中国林学: 英文版 

年卷期 2004,6(2)

页码 12-15

年份 2004 

分类号 S758.5 

关键词 信息熵  测量  香农指数  林分结构  多样性  条件熵 

文摘内容 Structural diversity is the key attribute of a stand. A set of biodiversity measures in ecology was introduced in forest management for describing stand structure, of which Shannon information entropy (Shannon index) has been the most widely used measure of species diversity. It is generally thought that tree size diversity could serve as a good proxy for height diversity. However,tree size diversity and height diversity for stand structure is not completely consistent. Stand diameter cannot reflect height information completely. Either tree size diversity or height diversity is one-dimensional information entropy measure. This paper discussed the method of multiple-dimensional information entropy measure with the concept of joint entropy. It is suggested that joint entropy is a good measure for describing overall stand structural diversity。