Nitrogen and PH

How does nitrification influence soil pH?

Thanks! :)

Through the first step of nitrification (NH4+ to NO2-), hydrogen ions are released, hence decrease the soil pH.

Interestingly, I think during ammonification (stage of mineralization before nitrification), NH3 reacts with H2O to form NH4 and release OH- (increasing pH). So I wonder how these two processes balance out, or what the net effect is on pH.

That would require determination of a H⁺ budget