Soil chemical properties content of an old-growth forests (control) and a second-growth forest (clear-cut) assessed with a before-after-control-impact approach

Soil samples were collected within five plots in two different years (1978, 2017) and two forest treatments: old-growth forest (control) and second-growth forest (clear-cut). The data presented in the file are the soil properties content of each plot. Abbreviations: year = sampling year; treatment = control or clear-cut; rep = plot; pH = pH H2O; Al = Exchangeable Al (cmolc kg-1); Ca_Mg = Exchangeable Ca+Mg (cmolc kg-1); P = Available P (mg kg-1); K = Exchangeable K (cmolc kg-1)