Advertisement

Urban Ecology pp 156-158 | Cite as

Heavy Metals: Chemical Time Bombs in Urban Soils

  • Thomas Held

Abstract

Soils in conurbations are characterised by an accumulation of heavy metals. According to data given by Späte and Werner (1991) for North Rhine-Westphalia, allotments are a type of land use with an above average heavy metal load. Zn, Pb, Cu, As, and Cd are accumulated especially. Considerable amounts of the stored heavy metals can be released by a change in environmental factors which influence the Capacity Controlling Properties (CCPs) (Hekstra 1993), e.g. pH-value, organic matter content, redox-property and soil texture. Any change within this very complex system of CCPs, caused either by environmental factors and/or human impact, influences the sink function of soils in one or the other way. Pollutants which can be triggered by changing environmental factors are called Chemical Time Bombs (CTBs) (Stigliani et al. 1991). The extent of the human impact on the load and the CCPs of soils via land use must be investigated further.

Keywords

Heavy Metal Human Impact Urban Soil Urban Forest Ronmental Factor 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Ewers U, Viereck L, Herget J (1994) Bestandsaufnahme der vorliegenden Richtwerte zur Beurteilung von Bodenverunreinigungen und synoptischen Darstellung der diesen Werten zugrundeliegenden Ableitungskriterien und -modelle. UBA-Text 35/94, BerlinGoogle Scholar
  2. Hekstra GP (1993) Can Climate Change Trigger Non-Linear and Time-Delayed Responses to Pollutants Stored in Soils, Sediments and Ground Water? Mitt. Dt. Bodenkundl. Ges. 69: 267–276Google Scholar
  3. Späte A, Werner W (1991) Erfassung und Auswertung der Hintergrundgehalte ausgewählter Schadstoffe in Böden Nordrhein-Westfalens. Landesamt für Wasser und Abfall Nordrhein-Westfalen, Materialien zur Ermittlung und Sanierung von Altlasten, Bd. 4, DüsseldorfGoogle Scholar
  4. Stigliani WM, Doelman P, Salomons W, Schulin R, Smidt GRB & S.E.A.T., Zee VD (1991) Chemical Time Bombs: Predicting the Unpredictable. Environment 33(4)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Thomas Held
    • 1
  1. 1.Institute of GeographyRuhr University BochumBochumGermany

Personalised recommendations