Shannon-Wiener指数的改进

MODIFICATION OF SHANNON-WIENER INDEX

针对多样性测定的Shannon－Wiener指数缺陷，运用分形理论，建立一个测定多样性的新的Shannon－Wiener指数，并推导了Shannon－Wiener新指数的均匀度公式．应用武夷山国家自然保护区的米储群落多样性调查的100－1500m^2不等的样地资料进行Shannon－Wiener新指数及其均匀度的测定，结果表明，新指数能客观表征多样性特性，是一个可供应用的新模型．

In this paper, a new modified Shannon-Wiener index for measuring species diversity is established by using fractal theory, and the evenness formula is deduced. The new indexand the evenness were used in measuring the species diversity of Castanopsis carlesiicommunity with an area of 100 m^2 to 1500 m^2 in Wuyishan National Nature Reserve. Theresults showed that the new index could objectively reflect the property of species diversity,and that is worthy of application in practice as a new model.