Effects of Different Cutting and Regeneration Patterns on β Diversity of Castanopsis carlesii Communities

Based on the data collected from the permanent plots of Castanopsis carlesii communities in Wuping County,Fujian Province during the past 12 years,the effects of different cutting and regeneration patterns(selection cutting regeneration,natural regeneration and artificial regeneration)on these communities were analyzed by using indexes of β diversity.The results showed that the C.carlesii was the dominant and competitively superior species in the different restoration phases of the natural regeneration and the selection cutting regeneration.The indexes of β diversity(Jaccard index C_J,Sorenson index CS,Bray-Curtis index C_N and Morisita-Hom index C_MH)in the selection cutting regeneration were above 80%,which belonged to low disturbance.The indexes of β diversity in the natural regeneration were 64%-88%,which belonged to intermediate disturbance.The dominant species in the artificial regeneration was Chinese Fir,although the dominant species before being cut was C.carlesii.The indexes of β diversity in the artificial regeneration were 15%-49%,which belonged to heavy disturbance,and could not be self-regenerated.The natural regeneration and the selection cutting regeneration could be self-regenerated in the different restoration phases,which had recovered to the C.carlesii community.The similarities of the indexes of β diversity in each restoration phases of the natural regeneration and the selection cutting regeneration patterns were above 50% and their species diversity could be maintained or increase,showing that the disturbance of these two management patterns on the communities were rational.