Area of Impact
Land Use & Land Health
Indicator
Tree Canopy Coverage - Areas with Sufficient Tree Canopy
Integrated Policy & Action Areas
C1.1
Greenhouse Gas Emissions Reduction
C1.2
Climate Adaptation & Hazard Mitigation
C1.3
Urban Tree Canopy, Natural Areas, & Greenways
C1.4
Healthy Watersheds
Reporting Period Data
Period | Score |
---|---|
2016 | 42% |
2018 | 42% |
2020 | 42% |
2022 | 37% |
Sustainability End Goal
Every tree canopy monitoring area has at least a 30% tree canopy coverage.Metric
The number of tree canopy monitoring areas that have at least a 30% tree canopy coverageTotal number of tree canopy monitoring areas in the city
How The Score Is Calculated
If there are 19 tree canopy monitoring areas and 3 of them have at least a 30% tree canopy coverage, the score is 3/19 = 16%Indicator Data
Note
Tree canopy monitoring areas follows the boundaries of most planning/census track areas but sometimes are further divided into smaller areas to differentiate the tree canopy coverage in more populated areas from that in less populated areas.
Rationale and Analysis
Why We Measure This
Urban forests enhance ecological, climate and human health benefits. Cities should aim for at least 30% tree canopy cover to help stop and reverse biodiversity loss and improve health benefits. Ideally, they should reach 40% canopy cover to achieve significant cooling benefits as more summer days get hotter. Not everybody gets to enjoy the benefits of the tree canopy cover to the same degree. It is important to understand tree canopy coverage’s distribution and reduce tree inequality.How We Measure It
Traditionally it is very labour intensive to assess tree canopy coverage accurately. Therefore, frequent updates and effective monitoring can be challenging. The City’s Geographic Information System (GIS) team is testing a new method that uses high-resolution imagery and remote sensing data to estimate tree canopy coverage. It’s expected to make the process easier and give good estimates so updates can happen every two years on regular schedules.
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