Fun Facts About Trees
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Trees and the Environment

  • Trees renew our air supply by absorbing carbon dioxide and producing oxygen.
  • The amount of oxygen produced by an acre of trees per year equals the amount consumed by 18 people annually. One tree produces nearly 260 pounds of oxygen each year.
  • One acre of trees removes up to 2.6 tons of carbon dioxide each year.
  • Shade trees can make buildings up to 20 degrees cooler in the summer.
  • Trees lower air temperature by evaporating water in their leaves.
  • Tree roots stabilize soil and prevent erosion.
  • Trees improve water quality by slowing and filtering rain water, as well as protecting aquifers and watersheds.
  • The cottonwood tree seed is the seed that stays in flight the longest. The tiny seed is surrounded by ultra-light, white fluff hairs that can carry it on the air for several days.
News

Nominate a True Professsional of Arboriculture

ISA Announces search for the 2010 True Professionals of Arboriculture

Do you know a tree care provider who is a true professional of arboriculture? If so, you are encouraged to nominate them for the ISA True Professionals of Arboriculture Recognition award.

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National Register of Big Trees
Big trees are symbols of all the good work trees do for the quality of the environment-and our quality of life. MORE >>

Green Spaces Improve Health
(BBC News) There is more evidence that living near a 'green space' has health benefits. MORE >>

Why Leaves Really Fall Off Trees
(From NPR)– You think you know why leaves fall off trees. Well, you're wrong. It's not the wind. It's not the cold. MORE >>

National Tree Benefits Calculator
The Tree Benefit Calculator allows anyone to make a simple estimation of the benefits individual street-side trees provide. This tool is based on i-Tree’s street tree assessment tool called STRATUM. With inputs of location, species and tree size, users will get an understanding of the environmental and economic value trees provide on an annual basis. The Tree Benefit Calculator is intended to be simple and accessible. As such, this tool should be considered a starting point for understanding trees’ value in the community, rather than a scientific accounting of precise values. For more detailed information on urban and community forest assessments, visit the i-Tree website. MORE >>

USDA Newsroom
USDA's collection of "hot topic" press releases ranging from current pest alerts for specific regions of the United States to new trends in disease prevention and tree and plant care. MORE >>


"A society grows great when old men plant trees whose shade they know they shall never sit in." - Greek Proverb

Resources

Benefits of Trees Brochure

Available through the ISA Web store

There's Money in Your Trees
How much are your trees worth? Most likely more than you think. MORE >>
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P.O. Box 3129, Champaign, IL 61826
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