Lignin and carbohydrates contents in permafrost soils

To understand the impact of permafrost thaw to global warming, the knowledges of concentration and decomposition state of soil organic matter (OM) is crutial. Here, we provided the concentration of lignin and non-cellulosic carbohydrates at molecular level which were measured by CuO-oxidation and TFA hydrolysis respectively in density fractionated soils (light fraction, LF vs. heavy fraction, HF) from three permafrost regions with decreasing continentality, expanding from east to west of northern Siberia (Cherskiy, CH; Logata, LG; Tazovskiy, TZ).