Soil chemistry, organic carbon pool, microbial biomass and necromass, enzymes activity and greenhouse gas (CO2, CH4, and N2O) fluxes after a long-term N fertilization of a Scots pine forest in Finland
Description
The dataset contains data analyzed in a scientific manuscript Nitrogen fertilization of boreal forest soil increases soil carbon pool through elevated microbial necromass formation but also modifies tree secondary metabolism, in submission. This study was established in a boreal Scots pine forest "Karstula" located in Central Finland (62°54’43.343″N; 24°34’16.021″E). Measurements and sampling were conducted in two treatments, control without nitrogen addition and nitrogen fertilization treatment which was performed seven times from 1960 to 2020. The soil CO2 emissions, and the CH4 and N2O net exchange data were collected from manual chamber measurements on control and N fertilization plots in 2021, 2022, ad 2023. Soils and roots were sampled from two soil layers, the organic layer and upper mineral layer (0–20 cm) in September 2021. The dataset "Karstula_SOM" contains soil pH, C and N content, stable and labile organic carbon pool, mineral-associated organic matter (MAOM) and particulate organic matter (POM), condensed tannins (CT), lignin, inorganic nitrogen (ammonium, nitrate), Fungal biomass (ergosterol) and necromass markers (aminosugar glucosamine) for mineral and organic layers. The dataset "Karstula_NeedleCT" contains condensed tannins (CT) from tree needles. The dataset "Karstula_Enzyme_activity" contains different enzyme activites of mineral and organic layers. The dataset"Karstula_GHG_temp.swc" includes CO2, CH4 and N2O fluxes, soil temperature and water content data measured from control and N fertilization plots, this dataset is part of published dataset DOI:10.5281/zenodo.13889763. The microbial community data used in this manuscript is part of the dataset in the publication DOI: 10.1111/gcb.17516.