Metadata covering soil properties, nutrient concentrations, tree productivity metrics, microbial biomass and extracellular enzyme activities at Karstula, Finland.

Metadata related to https://doi.org/10.1111/gcb.17516 publication and which include experimental design variables (PlotID, BlockID, Replicate, Treatment), geographic location (Longitude, Latitude), soil properties (Soil water content, Humidity, pH, C/N ratio, Total N, Total C, Carbon density), nutrient concentration (available P, NH4-N, Al, B, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, S, Zn), tree productivity metrics (Root growth, Root biomass, Basal area, Tree growth), microbial biomass (Total PLFA, PLFA fungi, PLFA bacteria, Fungi/Bacteria ratio, PLFA Actinobacteria, PLFA G+, PLFA G-, G+/G- ratio, NLFA), and microbial enzyme activity (Cellobiohydrolase, Beta-galactosidase, Beta-glucosidase, Beta-xylosidase, Lipase, Mn peroxidase, Chitinase, Alpha-glucosidase, Acid-phosphatase).