Critical Loads as an Alternative Approach
Authored By: P. G. Schaberg, E. K. Miller, C. Eagar
Given the limitations of static measures of Ca status, an alternative approach has been developed that models the level of pollutant additions that will likely lead to net losses in Ca pools within forests, therefore disrupting Ca cycling and leading to reduced plant Ca availability, and the physiological consequences described above.
Subsections found in Critical Loads as an Alternative Approach
- Description and Overview : The critical load of a pollutant is classically defined as a quantitative estimate of an exposure to one or more pollutants below which significant harmful effects on specified sensitive elements of the environment do not occur according to present knowledge (Nilsson and Grennfelt 1998).
- Examples from Europe and Canada : In 1984, a protocol to the UNECE 1979 Convention on Long-Range Transboundary Air Pollution was established providing for long-term financing of the Cooperative Program for Monitoring and Evaluation of the Long-Range Transmission of Air-Pollutants in EUROPE (EMEP) (http://www.unece.org/env/lrtap/emep_h1.htm).
Encyclopedia ID: p3196
