Divergent responses of soil organic carbon fractions to chronic nutrient additions in alpine meadow vs. alpine steppe
Nutrient enrichment profoundly alters soil organic carbon (SOC) dynamics, yet the relative controls of plant versus microbial pathways on specific SOC fractions remains mechanistically unresolved across contrasting grasslands. We investigated the effects of 11-year nitrogen (N) and phosphorus (P) addition on SOC frac...