Linking Microbial Communities and Molecular Transformations of Dissolved Organic Matter to the Fate of Nitrogen in Karst Aquifers

Physiochemical parameters, optical parameters, molecular characteristics and molecules degradation processes number of DOM in different karst aquifer media (karst fissure media, karst conduit media, karst window groundwater) derived from EEM, PARAFAC, and FT-ICR MS analysis. The average values of indices based on FT-ICR MS data here are all calculated as intensity-weighted average (e.g., H/Cwa, O/Cwa, DBEwa, NOSCwa, and (AImod)wa).