Phosphorus Sorption Kinetics in Reclaimed Lignite Mine Soils under Different Age Stands of Robinia pseudoacacia L. in Northeast Germany

Figure 6

Time-dependent P sorption [(PS()] for the 0–3, 3–10, and 10–30 cm soil depths under 2 (R2), 3 (R3), 4 (R4), and 14 (R14) years old Robinia pseudoacacia plantations. Lines were fitted by using the Elovich equation: , where is the P amount sorbed in time and α and β are constants for a given sorption process.