The International Society of Arboriculture publishes in its tree care website the following facts about trees:
- Trees keep our air supply fresh by absorbing carbon dioxide and producing oxygen.
- In one year, an acre of trees can absorb as much carbon as is produced by a car driven up to 8700 miles.
- Trees provide shade and shelter, reducing yearly heating and cooling costs by 2.1 billion dollars.
- Trees lower air temperature by evaporating water in their leaves.
- The average tree in metropolitan area survives only about 8 years!
- A tree does not reach its most productive stage of carbon storage for about 10 years.
- Trees cut down noise pollution by acting as sound barriers.
- Tree roots stabilize the soil and prevent erosion.
- Trees improve water quality by slowing and filtering rain water as well as protecting aquifers and watersheds.
- Trees provide protection from downward fall of rain, sleet, and hail as well as reduce storm run-off and the possibility of flooding,
- Trees provide food and shelter for wildlife.
- Trees located along streets act as a glare and reflection control.
- The death of one 70-year old tree would return over three tons of carbon to the atmosphere.