1120 SW Fifth Avenue, Portland, OR 97204
Portland's urban trees are the soul of a city known for its progressive land-use planning and extensive green infrastructure. Trees are a crucial part of the cityscape, softening and beautifying the built environment, improving neighborhood safety and livability, and providing vital ecosystem services such as air purification, temperature mitigation, and stormwater interception. Effective and efficient management of the urban forest relies on an understanding of the structure and function of the resource, as well as the benefits it provides.
Canopy cover has been identified as an important measure of urban forest health by the City of Portland. Canopy cover is a measure of Portland Parks & Recreation's bureau-wide performance, and is also cited as an important indicator in the Portland Urban Forest Management Plan (2004), Urban Forest Action Plan (2007), Climate Action Plan (2009), and the Portland Plan (2012). Monitoring Portland's tree canopy is important in order to understand how canopy may be changing, and understanding canopy trends will allow managers to make important decisions regarding management strategies.
Update of citywide canopy cover estimate including 2015 data
PP&R's 2018 study of available planting space in the city found room for 1.3 million trees, which would provide nearly $200 million annually in services such as air quality improvement, urban heat mitigation, and stormwater and other benefits.
In 2007, PP&R released its first canopy report, where it identified the replacement value of Portland’s public tree resource as over $2.3 billion and the structural value of the entire urban forest canopy as nearly $5 billion