Fig. 7From: Leaf functional traits differentiation in relation to covering materials of urban tree pitsThe effect of different covering materials on the physical properties of soil in urban tree pits. A Soil bulk density, B Total soil porosity, C Soil capillary porosity, D Soil non-capillary porosity. No cover (CK), turf (T1), permeable plastic blanket (T2), tree grate (T3), wood board (T4), cement (T5)Back to article page