Anion fluxes in three Indiana forests.

The major ions in soil solution in control and disturbed plots were measured over a year in three Indiana forests. The major ions in bulk precipitation were hydrogen and sulfate. Sulfate, calcium, and magnesium were the most important ions in the soil solution in control plots, while in disturbed plots nitrate, calcium, and magnesium were most important. Increase nitrate production and loss following disturbance caused a large increase in cation losses.