Abstract
A simulation model with two soil compartments has been used to investigate the responses of soils to acid deposition in three regions in southwestern China. The model (MAGIC) takes into consideration the important soil processes — anion retention, cation exchange, mineral weathering, Al dissolution and CO2 solubility — and uses lumped soil parameters. Forecasts of effects of future acid deposition on soils and surface waters can thereby be obtained on a regional scale. Five S deposition scenarios have been set for 1989–2000, i.e. constant deposition, increased deposition of 30 and 50%, and decreased deposition of 30 and 50%. The results indicated that in this region, the upper soil layer is most sensitive and the immediate danger from acid deposition seems to be on soils rather than on waters. The sensitivity of the results to different choices of important parameters, the maximum allowable deposition loads for this region, and needs for further acid deposition research are discussed.
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Dianwu, Z., Seip, H.M. Assessing effects of acid deposition in Southwestern China using the magic model. Water Air Soil Pollut 60, 83–97 (1991). https://doi.org/10.1007/BF00293967
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DOI: https://doi.org/10.1007/BF00293967