Fig. 3: Relationships between foliar gas fluxes and transpiration under different soil treatments.
From: Foliar methane and nitrous oxide fluxes in Salix bebbiana respond to light and soil factors
Panels (a–f) show relationships between transpiration rates (µmol H2O·m−2·s−1) and CH4 oxidation (nmol CH4·m−2·s−1), while panels (g–l) display relationships between transpiration and N2O emission (pmol N2O·m−2·s−1), across six soil treatment combinations: (a, g) control (unamended soil), (b, h) biochar, (c, i) low nitrogen, (d, j) high nitrogen, (e, k) biochar + low nitrogen, and (f, l) biochar + high nitrogen. Each panel includes a linear regression fit describing the relationship between gas flux and transpiration. Insets labeled “Int.” display intercept-only models, representing baseline gas fluxes at zero transpiration. All symbols, line styles, and colors are defined in the corresponding figure legend.
