Street Tree Inventory Report
By Angie DiSalvo
Concordia, OR (January 2011)- This report provides results of a street tree inventory conducted in Concordia neighborhood in 2010, along with Portland Parks & Recreation Urban Forestry staff recommendations to improve the condition of the urban forest.
Over the course of three monthly workshops, 50 volunteers contributed 250 hours collecting data on 4,636 trees. Trees at every tax lot in the neighborhood were inventoried; data collected included tree type (species or genus), condition, size (diameter at breast height), planting strip width, and presence of overhead high voltage lines.
Volunteers guided by PP&R Urban Forestry staff collected data on all 4,636 street trees within Concordia neighborhood to compile the first complete neighborhood street tree inventory. Data will be used to inform the creation of a Neighborhood Stewardship Plan to guide volunteers in caring for their community's trees.
Funding for this project was provided by Portland Parks & Recreation Urban Forestry and an East Multnomah Soil and Water Conservation District Partners in Conservation grant.
Concordia's street trees provide over $314,000 annually in aesthetic and environmental benefits,
as calculated by iTree Streets (Table 9). Annual benefits are valued by category at over $14,000
in residential energy savings, nearly $3,000 in carbon sequestration, nearly $5,000 in air quality
improvement, nearly $57,000 in storm water management, and over $234,000 in aesthetic and other
benefits. Each tree provides an average of $67 worth of benefits annually. Tables with financial benefits of different tree species in terms of air quality, storm water, carbon dioxide, and more, are available in the document.
Related Resource:
Street Tree Inventory Report
