The effects of the different intensities of artificial disturbances on the tree layer(CK,the original Castanopsis carlesii forest;class A,the regeneration by selected cutting;class B,the natural regeneration in clear-cutting land;class C,the artificial measures promoting regeneration,and class D,Chinese fir stand) of the Castanopsis carlesii forest were studied using formula of β diversity in Wupin County,Fujian Province.The results showed that the β diversity indices were measured by binary data(β_(WS),β_C,β_R,β_T) ascended gradually with the increasing of disturbance intensities,but the simility coefficients of community(C_J,C_S) droped down gradually as the disturbance intensities increases,and so on the β diversity indices measured using numberical data(C_N,C_(MH)).Relations of every measurement formula are very compact and coefficients of correlation all exceeded 0.87.