Fig 7. Leaf-specific apparent hydraulic conductance of Haloxylon ammodendron (a–e) and Calligonum mongolicunl (f–j) before and after irrigation with intervals of 1, 2, 4, 8 and 12 weeks.

The relationship between leaf water potential and transpiration rate was best fitted by the linear function Y = A + BX, in which A represents Ψ₀ which is the water potential at the soil–-root interface and B represents leaf-specific apparent hydraulic conductance before and after irrigation.