Figure 2
From: Methane transport and emissions from soil as affected by water table and vascular plants
Proportion of CH 4 flux transported through the plant (chimney %) per species plotted against plant biomass and root characteristics, (a,c,e,g) under the low water level (i.e. 5 cm below soil surface); and (b,d,f,h) under high water level (at soil surface). We tested linear, quadratic and inverse regressions and the solid lines were drawn if relationship was significant (p<0.05), dotted line for tendency (0.05≤p<0.1) and no line for insignificant relationship (p≥0.1). Note the scale differences of x-axis.