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Updated: Jun 27, 2025

A Venturi Effect Can Help Cure Our Trees
Published on: October 1, 2013
Satisfaction with urban trees associates with tree canopy cover and tree visibility around the home
Camilo Ordóñez1, S M Labib2, Lincoln Chung1
1Department of Geography, Geomatics and Environment, University of Toronto at Mississauga, 3359 Mississauga Road, Mississauga, ON L5L 1C6 Canada.
Abstract:
Many world cities want to expand the number of urban trees. How this expansion occurs should consider what people expect from trees based on how they experience and perceive these trees. Therefore, we need a better understanding of how people perceptually respond to urban tree abundance. This research examined whether people's satisfaction with urban trees and satisfaction with the management of those trees were related to objective measures of greenery such as the Normalized Difference Vegetation Index (NDVI), percent tree canopy cover, and the Viewshed Greenness Visibility Index (VGVI) for trees. We used a demographically and geographically representative survey of 223 residents in Toronto, Canada, and calculated NDVI, canopy cover, and VGVI at three neighbourhood sizes. We analysed the data using generalized linear regression. We found that canopy cover and VGVI had a positive association with satisfaction with urban trees. The associations were comparatively stronger at larger neighbourhood scales than at smaller scales. There were no statistically significant associations with NDVI or satisfaction with the management of urban trees.
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