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Interim report on symptomology and threshold levels of air pollutant injury to vegetation, 1978-79

  • Author(s) / Creator(s)
  • The dominant woody boreal forest plant species were fumigated with 0.34 ppm SO2 under controlled conditions in the laboratory in order to rank their physiological and visual sensitivities to the air pollutant. Deciduous trees and shrubs were much more sensitive than conifers, presumably because SO2 can enter broad leaves much more easily than needles. Labrador tea was intermediate in sensitivity to SO2 and so were its leaf resistances to pollutant uptake. Among conifers, jack pine was more sensitive than either black or white spruce, whereas the species within the deciduous group could not be ranked due to inadequate differences between their tolerance levels.

  • Date created
    1979
  • Subjects / Keywords
  • Type of Item
    Report
  • DOI
    https://doi.org/10.7939/R3222R902
  • License
    This material is provided under educational reproduction permissions included in Alberta Environment and Sustainable Resource Development's Copyright and Disclosure Statement, see terms at http://www.environment.alberta.ca/copyright.html. This Statement requires the following identification: \"The source of the materials is Alberta Environment and Sustainable Resource Development http://www.environment.gov.ab.ca/. The use of these materials by the end user is done without any affiliation with or endorsement by the Government of Alberta. Reliance upon the end user's use of these materials is at the risk of the end user.