An Urban Tree Canopy

Measurements of urban tree canopy [UTC] is sometimes done within a certain geographic area, such as a city. Why you may ask, would one want to know about a city tree canopy?
Well, here are a few reasons:
An urban tree canopy is a vital city asset; enhancing quality of life, reducing the city’s carbon footprint, and serving as wildlife habitat. An increase in a UTC may be accomplished through a combination of natural regeneration, tree plantings, and maintenance of existing trees.

Here is an example of a city where it has been done.
http://www.vtfpr.org/urban/documents/UTC_Report_Burlington.pdf