Figure 1.
Changes in MBC (a), EOC (b) and DOC (c) in the four seasons. The error bars show standard errors. Sp, Su, Au and Wi represent spring, summer, autumn, and winter, respectively. Pa: Picea asperata Mast.; Ba: Betula albosinensis; MBC: microbial biomass carbon, EOC: easily oxidized organic carbon; and DOC: dissolved organic carbon (this figure is created by Origin, version 9.0, 2012, OriginLab, Northampton, MA, USA; software available at: https://www.originlab.com/).