Abstract
Soil samples were collected from the main horizons of Scottish upland moorland podzols derived from quartzite or Devonian and Torridonian sandstones. The soils were subjected to routine chemical analysis and the results studied in relation to potential acidification effects of atmospheric deposition. Stronger correlations were observed for soil pHwater than for soil pH in CaCl2 with wet deposition fluxes of mobile strong-acid anions. Exchangeable Al3+ correlated more strongly with wet deposition fluxes of mobile strong-acid anions than with H+ deposition flux. It is suggested that the direct effects of mobile anion enhancement upon soil pHwater must be taken into account when assessing damage to, and hence critical loads of, acidification-sensitive mineral soils.
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