Responses of Species-abundance Distribution to Varying Sampling Scales in a Typical Forest Community in Mulinzi Nature Reserve
CHEN Jun
AI Xunru
YAO Lan
CHEN Siyi
Abstract：Species abundance distribution(SAD) is an important pattern to understand the structure and character of community.We analyzed the responses of SAD to varying sampling scales and formation mech-anism of SAD.We used data collected in 2014 from fifteen 20 m×20 m dynamic plot in a typical forest community (Carpinus fargesiana+Cyclobalanopsis glauca-Weigela japonica) in the Mulinzi Nature Re-serve.Empirical cumulative distribution function(ECDF) was selected to describe the spatial variation of SAD at six different scales.We subsequently used broken stick model(BSM) to fit the SAD,used χ2and AIC values to test goodness-of-fit.The results showed:①SADs were uniform,and the ratio of rare and common species was nearly at six scales.②BSM was accepted in six scales,and the goodness-of-fit was better at smaller scales.③Ecological niche could explain the differences between BSM and observed SADs.
Keywords：Mulinzi Nature Reserveempirical cumulative distribution functionspecies abundance distri-butionbroken stick model
Publication Date：2018-04-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 130-133,202 )