Fig. 4

\({\text{N}\text{H}}_{4}^{+}\)-N, \({\text{N}\text{O}}_{3}^{-}\)-N, AP, and AK concentrations at different soil depths (0–30 cm) under three different plantation species
\({\text{N}\text{H}}_{4}^{+}\)-N, \({\text{N}\text{O}}_{3}^{-}\)-N, AP, and AK concentrations at different soil depths (0–30 cm) under three different plantation species