Data and code for "Ecosystem stability persists despite greater diversity loss under nitrogen inputs with higher inorganic components"

Atmospheric nitrogen (N) deposition consists of both inorganic N (IN) and organic N (ON). IN reduced species richness greater than ON, which likely induces lower ecosystem stability as species richness and ecosystem stability are usually positively related. However, whether IN decreased ecosystem stability greater than ON remains unknown. Here, we assessed the effects of IN:ON ratios (0:10, 3:7. 5:5, 7:3, and 10:0) at the rate of 10 g N m-2 yr-1 on the temporal stability of plant community productivity in a temperate meadow grassland with a 6-year N addition experiment. Species richness, species asynchrony, population stability, and dominant species stability were investigated to explore the mechanisms underlying changes in plant community stability. We found that IN:ON ratio showed no impact on community productivity stability although all N addition significantly reduced community stability. However, IN addition decreased species richness more intensely than ON. IN:ON ratio showed no impact on species asynchrony, population stability or dominant species stability. Species asynchrony and dominant species stability were both positively related to community stability, while population stability showed no significant association with community stability. It implies that species asynchrony and dominant species stability likely maintained plant community stability in fertilized plots across IN:ON ratios. Synthesis. Our study suggests that, although IN reduced species richness greater than ON, it might be reasonable to evaluate the effects of N deposition on ecosystem stability with either IN or ON addition due to the stable species asynchrony and dominant species stability.