SMASS: A Simulation Model of Physical and Chemical Processes in Acid SulphateSoils. Version 2.0

摘要

The Simulation Model for Acid Sulphate Soils (SMASS) was developed to predict theeffects of water management strategies in areas with potential or actual acid sulfate soils on acidification and de-acidification. The model is a combination of a solute transport submodel (TRANSOL), a chemical submodel (including EPIDIM) and an oxygen transport and pyrite oxidation submodel. It combines physical processes like transport of water and solutes in unsaturated soil, and chemical processes like oxidation and reduction, complexation, adsorption/desorption, and precipitation/dissolution of chemical compounds. The report is a users' manual and presents a detailed outline of input and output files, guidelines for installation of the software on a VAX-VMS computer and the description of an application of the model, where the effects of drainage of an initially submerged soil are calculated over a period of 770 days.