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Desertification through Acidification: The Case of Waldsterben

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Summary

It is safe to say that theories which relate Waldsterben (forest dieback) to any one single cause fail to explain this complex phenomenon. There is a host of contributing factors including, beside SO2, NOx and acid rain, ozone, fluorine, heavy metals, viruses and pests, forest management and climatic factors. There is a consensus among scientists that pollutants weaken the trees’ resistance so that they can become more easy prey to other adverse influences. Beside the trees, buildings, animals and humans are affected, too, and man’s very livelihood is severely threatened when soil and water become too acidic. Acidification leads to podzolization which, in the temperate zone, results in a steppe-like landscape with widespread abandonment, a process that can be appropriately dubbed as desertification. Responsible for all this is the inefficient combustion of fossil fuels and, in particular, the tall stack policy which, instead of scrubbing the pollutants from the gas stream at the source, allows them to spread over wide areas thereby turning acidification into a worldwide problem. The present type of Waldsterben, which has not been observed before, proceeds at an unprecedented speed. To reverse the adverse trend also requires unprecedented efforts. This paper, therefore, after giving an overview of the extent, symptoms and mechanisms of the damages, emphasizes the active control strategies, such as more efficient and hence less fuel use, abatement techniques at the source, and substitution of pollution-free fuels. This is supplemented by relief strategies, such as liming, spraying, soil treatment etc. The ongoing research in this area at our institute is briefly discussed.

Keywords

Forest Ecosystem Acid Rain Relief Strategy Coal Cleaning Central European Forest 
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

© Springer Science+Business Media Dordrecht 1986

Authors and Affiliations

  • W. Bach
    • 1
  1. 1.Center for Applied Climatology and Environmental Studies, Department of GeographyUniversity of MünsterMünsterWest-Germany

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