nder natural conditions,the seasonal dynamics of litter accumulation in a Leymus chi-nensis grassland was found to be in such a way that the litter accumulation started with May,then was increasing exponentially over time,and reached a maximum value by the end of Oc-tober.If the input and decomposition rates of litter were kept constant,the annual accumu-lation would be increasing continuously over time and would finally reach a steady state,with a maximum accumulation of 572g/m￣2,95%of which would take abo...