Effects of Larix olgensis Henry Stumps and Coarse Roots on Phosphorus Fractions and Availability in Plantation Microsite Soils

This study quantified the horizontal influence range of larch stumps and coarse roots on phosphorus (P) fraction availability microsite soils explored whether this changes with different plantation types. The total P, available P fractions were measured in at 0–75 cm distances from soil depths 0–40 a pure (Larix olgensis Henry) mixed larch–ash (Fraxinus mandshurica Rupr.) plantation. Soils 85–95 used as controls. Larch affected concentration plantations, maximum reached 75 cm. However, plantation, only 0–10 affected, was 35 NaOH-Pi NaOH-Po similar to those while HCl-Pi, HCl-Po NaHCO3-Po P. could affect concentrations soils. distance by greater than that These results suggest position should be considered when reforestation sites are selected.