Figure 3 Two-dimensional
plot distributions of biomass and number of RPs of the plots labelled by
ICNs (row 1) and TCNs (row 2), respectively.
The ellipse area is the 95%
confidence region of the sample distribution. The left two panels show
the plot distributions under different N addition rates (N<15
g N m-2 year-1(green circle); N≥15 g
N m-2 year-1(pink circle)). The
middle two panels are the plot distributions under mowing (black circle)
and no mowing (red circle). The right two panels are the plot
distributions under N addition frequencies (zero (sienna circle), twice
a year (blue circle), monthly (orange circle)).