Soil microbial relative resource limitation exhibited contrasting seasonal patterns along an elevational gradient in Yulong snow mountain

1. Microbial relative resource limitations represented by enzyme stoichiometry reflect the relationship between microbial nutrient requirements and nutrient status in soil, but the issue on whether alterations in environments along elevational gradients affect the magnitude of microbial relative resource limitations remains unresolved.
2. Here, we examined seasonal patterns in microbial relative carbon (C) and phosphorus (P) limitations indicated by vector lengths and angles using relative proportional enzymatic activities and key controlling factors along an elevational gradient in the Yulong Snow Mountain. We also analyzed the relationships between microbial metabolic processes and microclimates (i.e., soil moisture and temperature), soil properties (i.e., pH and soil texture), and microbial attributes (i.e., microbial biomass and fungal: bacterial ratio).
3. We found that soil microbial relative C limitation decreased with increasing elevations, with lower levels observed in the dry ...,  ,

1. 以酶化学计量（enzyme stoichiometry）表征的微生物相对资源限制，可反映土壤微生物养分需求与土壤养分状况间的内在联系，但沿海拔梯度（elevational gradients）的环境变化是否会影响微生物相对资源限制的强度，这一问题仍未得到明确解答。
2. 本研究以玉龙雪山（Yulong Snow Mountain）的海拔梯度为研究样区，基于相对比例酶活性与关键调控因子，通过矢量长度与角度（vector lengths and angles）表征微生物相对碳（C）、磷（P）限制，探究其季节变化规律；同时分析了微生物代谢过程与微气候（microclimates，即土壤含水率与温度）、土壤理化属性（即pH值与土壤质地（soil texture））以及微生物群落特性（即微生物生物量（microbial biomass）与真菌-细菌比（fungal: bacterial ratio））之间的关联。
3. 本研究发现，土壤微生物相对碳限制随海拔升高呈降低趋势，干旱条件下的限制水平更低……