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Background and aims Elevated atmospheric CO2 (eCO2) and tropospheric O3 (eO3) can alter soil microbial processes, including those underlying N2O emissions, as an indirect result of changes in plant inputs. In this study, effects of eCO2 and eO3 on sources of N2O in a soybean (Glycine max (L.) Merr.) agroecosystem in Illinois (SoyFACE) were investigated. We hypothesized that increases in available...
Background and aims The impacts of atmospheric nitrogen (N) deposition on terrestrial ecosystem processes remain controversial, mostly because of the uncertainty regarding the fates of deposited N. We conducted a 16-week simulated deposition study to experimentally trace N in a greenhouse plant-soil system. Methods Using a two-way factorial design, we added (15NH4)2SO4 solution twice a week to pots...
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