Skip to page content
USDA Forest Service

Research & Development Treesearch

Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help - We Participate  Government Made Easy

Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (1.0 MB byte)

Title: Urban forests and social inequality in the Pacific Northwest

Author: Mills, John R.; Cunningham, Pat; Donovan, Geoffrey H.;

Date: 2016

Source: Urban Forestry & Urban Greening

Publication Series: Scientific Journal (JRNL)

Description: Research has shown there is a positive relationship between urban greenness and the well-being of cityresidents. But greenness is often unevenly distributed across a city, raising environmental justice issues.In 2011 and 2012 the USDA Forest Service, Forest Inventory and Analysis program installed ground plotsin the urbanized areas of Oregon and Washington. We analyze these data for the urban areas west of theCascade Mountains, linking it with demographic data from the U.S. Census to examine the relationshipbetween greenness and socioeconomic status at a sub-regional scale. To explore some relations betweenurban forest measures and socioeconomic conditions and measures we developed four models: presenceof tree canopy cover with a logistic mixed model, and on a subset of the data, percent tree canopy coverwith a linear mixed model and tree count and tree species count with Poisson mixed models. We foundthat median household income, house value, land use, and years in the Tree City USA program contributedto explaining measures of greenness, such as canopy cover presence, percent canopy cover, tree counts,and tree species counts. This agrees with other studies, but does so at a broad scale covering the mostdensely populated areas in the Pacific Northwest.

Keywords: Census demographics, forest inventory and analysis, greenness, mixed models, urban canopy cover

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.



Mills, John R.; Cunningham, Patrick; Donovan, Geoffrey H. 2016. Urban forests and social inequality in the Pacific Northwest. Urban Forestry & Urban Greening.16: 188-196.


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.