Figure 1. The geographical location map of the study area.
Figure 2. Vegetation type affects MBC (A; microbial biomass carbon), EOC (B; easily oxidized carbon), POC (C; particulate organic carbon) and SOC (D; soil organic carbon) content. XS: Xanthoceras sorbifolia ; HR: Hippophae rhamnoides ; CK: Caragana korshinskii ; GL: Grassland. Capital letters indicate significant differences (P < 0.05) between vegetation types. The error bar is the standard error.
Figure 3. Vegetation type affects soil amylase (A), catalase (B), urease (C) and sucrase (D) activity. XS: Xanthoceras sorbifolia ; HR: Hippophae rhamnoides ; CK: Caragana korshinskii ; GL: Grassland. Capital letters indicate significant differences (P < 0.05) between vegetation types. The error bar is the standard error.