Tree Preservation and the Urban Forest 

This article’s study looked at 5 U.S. cities and calculated that, while these cities spent between $13-$65 per tree, benefits ranged from $31-$89 per tree. These cities were Fort Collins, CO, Cheyenne, WY, Bismarck, ND, Berkeley, CA, and Glendale, AZ. Savings calculations considered energy savings, CO₂ reductions, air quality improvements, stormwater runoff reductions, and aesthetic value. This came to an annual return of between $1.37-$3.09 on each dollar spent.