Figure 2 . Estimated size-frequency distributions of BCI forest
under different bin-widths of size classes. To verify the effect of
growth rate variance, size classes were bound with the estimated mean
diameter increments of the corresponding sizes, in approximately 5-years
(blue dots) and 1-month (red dots). This way of data grouping is
different with the linear- or log-even size classes, which were used
previously and would lead to a decreasing exponent with the magnitude
increase of bin-width due to statistical bias(White et al. 2008).