Fig. 2From: Sensitivity of soil nitrifying and denitrifying microorganisms to nitrogen deposition on the Qinghai–Tibetan plateauEffects of N deposition rate on a soil water content, b soil pH, c dissolved organic carbon content, d aboveground plant biomass, e soil NO3−-N content, and f NH4+-N content. Error bars represent one standard error. For clarity, the statistical results with P > 0.05 are not shownBack to article page