Soil acidification occurs under ambient conditions but is retarded by repeated drought: Results of a field-scale climate manipulation experiment

► A unique investigation of acidification on a field-scale climate manipulation trial. ► Soil acidification occurred over 13 years of ambient N deposition conditions. ► Repeated annual drought retards acidification by lower cation loss. ► Increasing cover of pollution tolerant mosses may reduce N input and proton formation. ► Soil acidification is still a concern on this N-saturated system.