Press Coverage

Urban Greening

Issue link:

Contents of this Issue


Page 2 of 2

-8- Technology&more An eCognition-based UTC has also been a core source of intelligence for Casey Trees, a tree advocacy organization in Washington, D.C that is striving to help the District achieve a 40-percent tree canopy goal by 2032. From its peak of 50 percent in 1950, the former "City of Trees" has lost 2.5 percent of its tree canopy every decade. Based on the UTC assessment, Washington's tree coverage is 36 percent, but its impervious surface coverage is 41 percent. The District aims to rectify this inequity. To achieve D.C.'s tree canopy target, existing trees need to be preserved and new trees must be planted—216,300 total or 8,600 trees annually. Aided by the UTC analysis data, Casey Trees, in partnership with government groups, have planted more than 48,400 trees since 2008, and devised maintenance strategies to protect its existing green landscape. Although Boulder, New York, Pittsburgh and Washington D.C. all came to the tree-canopy table with diverse needs and goals, they are united in the benefits they glean from having UTC baselines; UTC baseline data enables each city to continually measure how well their green initiatives are helping them create a more resilient landscape. Detailed, accurate UTC datasets not only provide planners with the tools they need to devise efficient, tactical greening strategies to maintain and better their canopies, they can help to strengthen the city's overall resilience against future shocks and stresses. That's smart. See feature in Apogeo Spatial's June issue: New York City's Post Avenue in 2008 (left) and in 2012 (right) after tree planting. An eCognition-based map showing Pittsburgh's tree canopy coverage. Tree Pittsburgh's goal is to extend the city's canopy cover by 20 percent over the next 20 years.

Articles in this issue

Links on this page

view archives of Press Coverage - Urban Greening