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To assess the ecological quality of acid forest soils, the base saturation and the solution pH, Al concentration and base cation/Al ratios are of interest. Relationships between these parameters would facilitate this assessment. Examples are empirical relationships between pH and base saturation, and between the Al concentration and the ionic strength of the soil solution. From a mechanistic point...
The molar ratio of the calcium (Ca) and aluminium (Al) activities (Ca/Al ratio) in soil water is an important indicator for forest health conditions, with values less than 1 indicating negative conditions for forest growth. Here we used and calibrated a simple model, with only modest parameter requirement, to describe the Ca activity in soil water of acid forest soils according to the Gaines–Thomas...
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