Figure 5

Rhizospheric effects for total PLFA (a), bacterial PLFA (b), fungal PLFA (c), G⁺ PLFA (d), G⁻ PLFA (e), fungal/bacterial PLFA (f), and G⁺/G⁻ PLFA (g) in the treatments. ^*Above each bar indicates significant difference between the rhizosphere and bulk soil. Different lowercase letters indicate significant differences in rhizospheric effects between treatments. AN0, ambient CO₂ and no N added; AN1 ambient CO₂ and N supply at a rate of 2.5 g N m⁻² y⁻¹; AN2, ambient CO₂ and N supply at a rate of 5 g N m⁻² y⁻¹; EN0, elevated CO₂ and no N added; EN1, elevated CO₂ and N supply at a rate of 2.5 g N m⁻² y⁻¹; EN2, elevated CO₂ and N supply at a rate of 5 g N m⁻² y⁻¹.