Autumn nitrogen enrichment destabilizes ecosystem biomass production in a semiarid grassland.

ABSTRACT: Nitrogen (N) deposition decreases the temporal stability of ecosystem aboveground biomass production (ecosystem stability). However, little is known about how the responses of ecosystem stability differ based on seasonal N enrichment. By adding N in autumn, winter, or growing season, from October 2014 to May 2020, in a temperate grassland in northern China, we found that only N addition in autumn resulted in a significantly positive correlation between ecosystem mean aboveground net primary productivity (ANPP) and its standard deviation and significantly reduced ecosystem stability. Autumn N-induced reduction in ecosystem stability was associated with the vanished negative effect of community-wide species asynchrony (asynchronous dynamics among populations to environmental perturbations) o

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC11197746 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature