S1 Fig.docx

S1 Fig. Soil microbial biomass N (a), soil net N mineralization (b) and soil respiration (c) amended by litter in monoculture at 14, 42, 84 and 182 days of incubation. Data are means ± SE, with n=4. MP: Mongolian pine; AS: A. scoparia; SV: S. viridis; PC: P. communis