Fig. 3: Impact of soil pH on nitrification and ammonia emission.
From: Enhanced nitrification in higher pH soils moderates ammonia emissions in global croplands
a Impact of pH on net nitrification rate; b Effect of nitrification inhibitor (NI) on soil \({\mbox{N}}{{\mbox{H}}}_{4}^{+}\) concentration at different soil pH; c Effect of NI on soil NH3 emission at different soil pH. Relative concentration and emission indicate the ratio of \({\mbox{N}}{{\mbox{H}}}_{4}^{+}\) concentration or NH3 emission when NI is applied compared to when no NI applied. The bubble size in a represents the sample size. The dashed lines represent the 95% confidence intervals.
