Chemical properties of the organic layer associated with PFT tree species in the Core Plots at 1000, 2000 and 3000 m asl

The dataset includes the chemical properties of the soil organic layer associated with the PFT trees species of the core plots in Bombuscaro, San Francisco and Cajanuma. The samples were taken during sampling campaigns in 2018 and 2019. Respresentative samples were taken from the whole organic layer at five locations close to each tree, bulked in the field, dried at 40 °C at the ECSF and transported to Germany for laboratory analyses. Total carbon, nitrogen and sulfur were measured by elemental analysis via thermal combustion in milled aliquots.