Urban Forestry Research

ACT members include the most innovative nonprofit tree conservation organization in the country.



Ultimately, conservation is about empowering citizens to improve the communities where they live and work. The Alliance for Community Trees is the only national organization working to improve the urban forests where 80% of Americans live- our cities, towns, and villages. ACT’s national office assembles coalitions that drive broad environmental success for our more than 180 organizations in 41 states in the pursuit of Clean Air, Green Streets, and Healthy Neighborhoods.
Urban forestry is simply about trees in places where people live.
Every day across the country the public is learning the benefits of planting and protecting trees. For example, did you know that more trees correlates with:

  • Lower crime. The presence of trees in urban neighborhoods has been linked to reduced crime.
  • Cleaner air. Trees provide the oxygen we breathe. One acre of trees produces enough oxygen for 18 people to breathe each day and eliminates as much carbon dioxide from the air as is produced from driving a car 26,000 miles. Tree leaves help trap and remove tiny particles of soot and dust which otherwise damages human lungs and tree root networks filter contaminants in soils producing clean water. Forty trees will remove 80 pounds of air pollutants annually. That is, 4 million trees would save $20 million in annual air pollution cleanup.
  • Energy savings. Trees lower the temperature through shade. The cooling effects of trees can save millions of energy dollars. 3-4 shade trees located strategically around a house can cut summer cooling costs by 30-50%. For one million trees, that’s $10 million in energy savings.
  • More public revenue. Studies have shown that trees enhance community economic stability by attracting businesses and tourists. People linger and shop longer along tree-lined streets. 40,000 trees in commercials parking lots would induce shoppers to spend 11% more for goods and services.
  • Higher property values. Property values of homes with trees in the landscape are 5 – 20% higher than equivalent properties without trees. 4000 trees in yards would increase the sales price of homes by 1%, plus increase the property values as much as 10%. That is an estimated annual increase in homes sale value of $10.4 million.
  • More efficient stormwater management. Roots stabilize soil and prevent erosion by trapping soil that would otherwise become silt. Silt destroys fish eggs and other aquatic wildlife and makes rivers and streams shallower, causing more frequent and more severe flooding. Trees along streams hold stream banks in place to protect against flooding. One tree reduces 4,000 gallons of storm water runoff annually. 400 trees will capture 140,000 gallons of rainwater annually. That is, 4 million trees would save $14 million in annual storm water runoff costs.
  • Do you plant, preserve, train, or educate? Join our national coalition to:

  • Share resources and ideas
  • Receive research and funding updates
  • “We have been getting so much great information and resources from ACT. We are really thrilled with our membership and the benefits we’ve gotten from it.”
    – Sharon DiLorenzo, Program Manager, Capital District Community Gardens
    “Alliance for Community Trees – invigorating, rewarding – a place to share ideas and resources and a collective voice.”
    – Janette Monear, Executive Director, Texas Trees Foundation
    “We are really pleased with the amazing amount of support we receive from ACT.”
    – Andrew Hart, Director of Urban Forestry, Keep Indianapolis Beautiful
    Join the most innovative nonprofit tree conservation organization in the country to influence how healthy urban forests are part of the solution to seeding great communities.
    Find Out More:
    ACT Membership Brochure
    Urban Forestry Research
    Nonprofit Network and Urban Forestry News
    NeighborWoods
    ACT Trainings and Events
    National Tree Policies
    The Alliance for Community Trees is a 501(c)3 tax exempt organization (EIN # 68-0319301), and also participates in the Combined Federal Campaign (CFC # 12402). To discuss planned giving opportunities, call us at 301-277-0040.


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