Data on the properties of soils developing in post-mining areas in Wielkopolska Region under the influence of long-term alfalfa cultivation with the addition of Dactylis glomerata L.

The dataset contains the results of analyses of physical and chemical properties, metapopulation of bacteria, and enzymatic activity in 40-year-old Technosols developing in an open-pit mining area under alfalfa (Medicago sativa L.) cultivation with the addition of grasses (Dactylis glomerata L.) at different levels of mineral fertilization under static field experiment conditions.Designations of abbreviations used:0NPK (no fertilization),1NPK (160 kg N ha-1 yr-1, 40 kg P2O5 ha-1 yr-1, 80 kg K2O ha-1 yr-1)2NPK (320 kg N ha-1 yr-1, 80 kg P2O5 ha-1 yr-1, 160 kg K2O ha-1 yr-1).DHA - dehydrogenase activity   ACP – acid phosphatase activityALP - alkaline phosphatase activity        CAT - catalase activity   BIF - biological index of fertilityTC - total carbon           SOC - soil organic carbon          TN - total nitrogen        P - available forms of phosphorus         Hext - exchangeable acidity       CEC - cation exchange capacity.