I'm probably late, but here goes:

The National Urban and Community Forestry Advisory Council is an organization that supports education, projects, and groups related to urban and community forestry. We seek to establish sustainable urban forests for all communities. Explore this site to find out more!

Our urban and community trees and forests are vital parts of America's infrastructure and essential to the well-being of our individual human health and welfare. Through the use of a properly designed, high quality planting and maintenance program, our communities will benefit from cooler summer air, warmer homes in winter, cleaner air and water, quieter streets, peaceful neighborhoods, healthy and productive local economies, and overall improved and expanded urban environments for all Americans.

www.treelink.org/nucfac/