Chapter 11. ESTIMATING FIELD WEATHERING RATES USING LABORATORY KINETICS

Nutrient and carbon budgets in forest soils as decision support in sustainable forest management

“…Weathering rates were modelled with the PROFILE model (Sverdrup and Warfvinge, 1995), a steady state model including process-oriented descriptions of solution equilibrium reactions, chemical weathering of minerals and leaching and accumulation of dissolved chemical components. The model has been extensively tested and validated on field data under a wide range of conditions, see Sverdrup and Warfvinge (1995) for a thorough discussion about validation and uncertainties. Harvest losses were estimated based on data from the Swedish National Inventory of Forests and leaching was derived from Swedish measurements of concentrations in soil water and runoff.…”

The kinetics of the dissolution of chlorite as a function of pH and at 25°C

“…In their review on estimating field weathering rates using laboratory kinetics, Sverdrup and Warfvinge (1995) identified a number of catchment models which employed weathering kinetics. However, the homogeneity of a tailings storage facility allows the system to be considered as a single cell and modelling under these conditions is possible using the quasi-steady state algorithm developed by Furrer et al (1989Furrer et al ( , 1990.…”

Long Term Effects of Acid Irrigation at the Höglwald on Seepage Water Chemistry and Nutrient Cycling

“…However, no changes in the microbiological activity due to acid irrigation have been reported at Höglwald (Anderson 1998). (2) The elevated soil water content and the excessive proton input during acid irrigation will intensify weathering reactions (Sverdrup and Warfvinge 1995) and thus release additional base cations. (3) The temporal acidification of the upper soil horizons and the unfavourable ratio between base cations and aluminium may reduce the base cation nutrient uptake in the upper soil horizons.…”