Nitrogen leaching and acidification during 19 years of NH4NO3 additions to a coniferous-forested catchment at GÃ¥rdsjön, Sweden (NITREX)

► The fraction of input N lost to runoff has increased from 0% to 10%. ► Increased concentrations of NO3 in runoff slowed ecosystem recovery from acid deposition. ► About 5% of the total N input went to runoff, 44% to biomass, and the remaining 51% to soil. ► N deposition enhanced carbon (C) sequestration at a mean C/N ratio of 42-59 g g−1.