Water, Air, and Soil Pollution

, Volume 72, Issue 1–4, pp 143–162 | Cite as

Calculating critical loads for acidity with the simple mass balance method

  • Harald Sverdrup
  • Wim De Vries


The critical load for acid deposition to forest soils, groundwater and surface water can be calculated using a simple mass balance model, taking into account all sources of acidity and alkalinity in the system. The model is very simple to apply, and the major difficulty lies primarily in the estimation of reasonable values for the required input data such as the weathering rate. Methods for its estimation are indicated here. Examples are given for the application of the simple mass balance method (SMB) to Dutch and Swedish forest soils, lakes and shallow groundwater. This work outlines and explains the actual application of the consept as it is being carried out regionally for all European nations.


Surface Water Acidity Input Data Alkalinity Forest Soil 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Harald Sverdrup
    • 1
  • Wim De Vries
    • 2
  1. 1.Dept. Chemical Engineering IILund Institute of Technology Box 124, Chemical CenterLundSweden
  2. 2.Winand Staring Center for Integrated Land, Soil and Water ResearchAC WageningenThe Netherlands

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