Core Activities

Threats to the Urban Forest

The threats to the urban forest in Canada are both physical and political. They include:
  • Urbanization of natural, wooded areas outside of cities – converting woodlots into either a non-treed environment or a single-tree environment
  • Loss of topsoil in land development which therefore prejudices tree growth
  • Exotic pest, disease and invasive plant introductions including Dutch elm disease, Asian gypsy moth and European buckthorn
  • Expansion of urban infrastructure (roads widenings etc.) with resulting negative impacts on trees
  • The use of trees and plant material of unknown provenance thereby increasing susceptibility to increased mortality
  • Increasing drought, salt pollution in the winter and air pollution problems, and
  • A lack of credible leadership, both governmental and academic to lead in urban forestry work in Canada.