Priming effects by cellulose inputs decrease with warming regardless of the decomposition stages of soil carbon pools

Soil comprises diverse carbon (C) pools undergoing various decomposition stages, each characterized by distinct stability and turnover rates. The response of these C pools to warming with the input of plant residues remains unclear. We conducted a 90-day incubation study at 15 °C and 25 °C, introducing 13C-labeled cellulose into soils from old-field (OF), bare-fallow (BF), and bare-fallow plus 815-day pre-incubation (BF+) representing different stages of soil organic matter decomposition. We estimated the priming effects (PE) of cellulose and found that PE were 30.6