The ratios of GlucN/MurAc and GlucN/GalN in the soil horizons at different altitudes indicated that they might originate from different microbial communities.

• 不同纬度的氨基葡萄糖／胞壁酸比值与氨基葡萄糖／氨基半乳糖比值不同，说明它们来源于不同的微生物种群。