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PART I: DEFINING URBAN FOREST CHALLENGES AND BENEFITS

What is an Urban Forest?

An urban forest encompasses the trees and shrubs in an urban area,1 including trees in yards, along streets and utility corridors, in protected areas, and in watersheds.5
This includes individual trees, street trees, green spaces with trees, and even the associated vegetation 2 and the soil beneath the trees.1

In many regions, urban forests are the most extensive, functional, and visible form of green infrastructure in cities. Green infrastructure is the natural and semi-natural infrastructure within a city that provides ecosystem services like stormwater management or air pollution abatement.4

This image provides some examples of where the urban forest can exist in a city. It includes trees, understory plants, and the soil and subsurface area. NRDC Green Infrastructure. Image: Cities4Forests. Photo 1: Truba7113. Photo 2: Vladimir Kudinov. Photo 3: Chesapeake Bay Program. Photo 4: Luísa Zottis/EMBARQ Brasil. Photo 5: Pablo Gonzalez. Photo 6: Vitor Oliveira.