首页|Information Entropy Measures for Stand Structural Diversity:Joint Entropy
Information Entropy Measures for Stand Structural Diversity:Joint Entropy
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国家科技期刊平台
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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.
stand structural diversityShannon indexjoint entropyconditional entropy
LEI Xiangdong、Lu Yuanchang
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Institute of Forest Resource Information Techniques,Chinese Academy of Forestry,Beijing 100091,P. R. China
国家科技期刊平台
NSTL
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