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A street tree survey for Canadian communities: Protocol and early results

Publication: The Forestry Chronicle
20 December 2013


This paper describes early results from a survey that was developed to allow rapid, yet reasonably accurate, estimates of street tree composition in Canadian communities. To carry out surveys, participants walk (or drive) a number of 0.5-km routes, identifying all trees within 10 m of the road edge. The number of survey routes in each community was determined such that tree densities could be estimated within reasonable error bounds: ±5 trees/km for common species and ±1 tree/km for uncommon species. Information from this initiative has already supported invasive species risk assessments and urban forest management activities. Full details are available at


Cet article porte sur les résultats préliminaires d’un sondage élaboré afin de permettre des estimés malgré tout raisonnablement précis de la composition des arbres le long des rues des communautés canadiennes. Lors du sondage, les participants se déplacent (en auto ou à pied) sur des sections de rue de 0,5 km, répertoriant tous les arbres situés à moins de 10 m du bord de la rue. Le nombre de sections de rue dans chaque communauté a été déterminé de façon à ce que la densité des arbres pouvait être estimée à l’intérieur d’une marge raisonnable d’erreur: ±5 arbres/km dans le cas d’espèces courantes et ±1 arbre/km pour les espèces exotiques. Les informations tirées de ce projet ont déjà permis de procéder à l’évaluation du risque posé par les espèces envahissantes et des activités d’aménagement des forêts urbaines. Les détails complets de l’étude sont disponibles sur le site:

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Information & Authors


Published In

cover image The Forestry Chronicle
The Forestry Chronicle
Volume 89Number 06December 2013
Pages: 753 - 758


Version of record online: 20 December 2013

Key Words

  1. street tree
  2. survey
  3. invasive species
  4. urban forest management
  5. Canada


  1. arbre de rue
  2. sondage
  3. espèces envahissantes
  4. aménagement des forêts urbaines
  5. Canada



John H. Pedlar
Natural Resources Canada, Canadian Forest Service, Great Lakes Forestry Centre, 1219 Queen Street East, Sault Ste. Marie, Ontario P6A 2E5. E-mail:

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