RT Journal Article SR Electronic T1 Environmental Justice and Factors that Influence Participation in Tree Planting Programs in Portland, Oregon, U.S. JF Arboriculture & Urban Forestry (AUF) FD International Society of Arboriculture SP 70 OP 77 DO 10.48044/jauf.2014.008 VO 40 IS 2 A1 Geoffrey H. Donovan A1 John Mills YR 2014 UL http://auf.isa-arbor.com/content/40/2/70.abstract AB Many cities have policies encouraging homeowners to plant trees. For these policies to be effective, it is important to understand what motivates a homeowner’s tree-planting decision. Researchers address this question by identifying variables that influence participation in a tree-planting program in Portland, Oregon, U.S. According to the study, homeowners with street trees, and those living in older homes, are more likely to participate in the local program. Homeowners who had owned their homes for longer, and those who live in census-block groups with lower high-school graduation rates, are less likely to participate in the program. Results suggest that tree-planting programs may inadvertently exacerbate environmental inequality.